Guides, deep-dives, and best practices for teams building better business communications — from Wholesale VoIP to AI receptionists.
The 347 area code covers Brooklyn, Queens, Staten Island and the Bronx. Learn how this New York City overlay works.
The 914 area code covers Westchester County, just north of New York City. Here is what to know about this busy region.
The 800 area code is the first toll-free code, from 1963. Learn how 800 numbers work, who pays for calls, and how to get one.
The 855 area code is a toll-free code. It is not tied to any state or city. Learn how 855 numbers work.
The 833 area code is a toll-free prefix for the US and Canada. It is free to call and used by many businesses.
Find all California area codes by city and region. The state has close to 40, more than any other.
The 212 area code is the famous code for Manhattan. Learn its history, what it covers, and how to get a 212 number.
The US phone number format uses 10 digits in a set order. Learn what each part means and how to write numbers the right way.
The 808 area code covers all of Hawaii. It is the only US state with just one area code.
The 702 area code covers Las Vegas and all of Southern Nevada. Learn its cities, the 725 overlay, and how to get a 702 number.
A vanity phone number spells a word on the keypad. Learn how to test words, pick toll-free or local, and route your number.
Learn five ways to set up toll free call forwarding. See what each call costs and which traps to test before you go live.
Wholesale Voice is the backbone that carries global business calls at scale. Learn how it works, who needs it, and how to buy it.
Learn how to pick a wholesale VoIP termination provider. Check the quality stats, test a route fairly, and avoid rate card traps.
A virtual phone number for business works on any device, from anywhere. Learn how to get one and what to look for.
A wholesale voice carrier helps carry phone calls around the world. Learn what they do, why tiers matter, and how to pick one.
A wholesale VoIP provider sells voice minutes in bulk to resellers and carriers. Here is how to pick the right one.
International VoIP wholesale providers shape the cost and quality of your global calls. Here is what to look for.
The 248 area code covers Oakland County, Michigan. It takes in Troy, Pontiac and many Detroit suburbs.
The 386 area code covers Daytona Beach, Deltona and Lake City in Florida. See the cities and counties it serves.
The 765 area code serves the middle and east of Indiana. It covers towns like Muncie, Kokomo and Terre Haute.
The 228 area code covers the Mississippi Gulf Coast, like Biloxi and Gulfport. It was set up in 1997.
The 743 area code is an overlay of 336 that began in 2017. It serves Greensboro, Winston-Salem and High Point.
What is a VoIP phone number? It is a normal phone number sent over the web. Learn who owns it and what to check first.
See six VoIP features small business teams use to work like a big firm. Learn which ones help the most.
Call center software helps your team route, queue, record and track customer calls. Learn how it works and what to look for.
A Wholesale Voice business buys call time in bulk and sells it on. Learn how this kind of phone business works.
Wholesale VoIP origination takes calls from users and hands them to carrier networks. Learn how it works and how it is not the same as termination.
Learn what sets a leading VoIP wholesale carrier apart. Look for a deep network, good call quality, and clear terms.
CC routes are low-cost, high-volume routes built for call centers. Learn how they differ from CLI routes and how to judge them.
The 206 area code covers Seattle, Washington. Learn its history and how to get a 206 number for your business.
The 213 area code covered all of California in 1947. Today it serves downtown Los Angeles.
The 323 area code covers Hollywood, Koreatown and East LA. Learn what it covers, its history, and how it relates to 310.
The 424 area code overlays 310 in West Los Angeles. Added in 2006, it serves Santa Monica, Malibu, Torrance and more.
The 469 area code is an overlay for Dallas, Plano, Frisco and nearby towns. It started in 1999.
The 646 area code covers all of Manhattan as an overlay for 212. Learn its history and how to get one for your business.
The 805 area code covers California's Central Coast, from Ventura to San Luis Obispo. Learn its cities, ZIP codes, time zone and history.
The 832 area code serves the Houston area, along with 713 and 281. It was added in 1999 to free up more numbers.
The 919 area code covers Raleigh, Durham, Chapel Hill and the Research Triangle. Learn its cities, time zone and history.
The 925 area code covers East Bay towns like Concord, Walnut Creek and Pleasanton. It split from 510 in 1998.
For a cloud contact center, the phone carrier shapes results most. Use this checklist on caller ID, routes, pacing and failover.
Learn how to pick the right business phone number. This guide covers five cases, from solo freelancer to remote team.
This guide shows how to judge UCaaS providers from the carrier layer up. It has a score sheet and contract traps to avoid.
What is business communication for a small team? Four simple questions help you pick the right channel.
The 305 area code covers Miami and the Florida Keys. Learn about its overlays and how to get a 305 number for your business.
The 312 area code covers downtown Chicago, including the Loop and River North. Learn its history, the 872 overlay, and how to get one.
The 718 area code covers Brooklyn, Queens, the Bronx and Staten Island. Learn about its overlays and how to get one.
The 917 area code covers all five New York City boroughs. It was the first overlay in North America.
The 415 area code covers San Francisco and Marin County. Learn how it works with the 628 overlay and how to get one.
The 310 area code covers west Los Angeles, from Beverly Hills to Malibu. Learn about its 424 overlay and how to get one.
The 404 area code is Atlanta's first phone code. Learn the cities it covers, its overlays, and how to get a 404 number.
The 770 area code covers the Atlanta suburbs, like Marietta and Roswell. Learn how it split from 404 in 1995 and how to get one.
The 202 area code covers all of Washington, DC, the seat of US government. Learn about its 771 overlay and how to get a 202 number.
The 617 area code is Boston's first phone code. Learn about the 857 overlay and how to get a 617 number.
The 214 area code is the first phone code for Dallas. Learn how it works with 469 and 972, and how to get one.
The 713 area code is Houston's first phone code. Learn what it covers and how to get a 713 number for your business.
The 512 area code covers Austin and Central Texas, known as Silicon Hills. Learn about its 737 overlay and how to get a 512 number.
The 602 area code is the heart of Phoenix, Arizona. Learn about its odd time zone, its overlay, and how to get one.
The 619 area code covers central San Diego and the South Bay near Mexico. Learn what it covers and how to get a 619 number.
The 503 area code covers Portland, Salem and the rest of northwest Oregon. Learn how to get a 503 number.
The 615 area code covers Nashville and middle Tennessee, home of country music. Learn about the 629 overlay and how to get a 615 number.
The 303 area code is Denver's first phone code. Learn about its overlays and how to get a 303 number for your business.
The 313 area code is the first Detroit code. It now shares its turf with the 679 overlay.
The 407 area code covers Orlando and Central Florida, home to Walt Disney World. Learn how to get a 407 number.
The 408 area code covers San Jose and the heart of Silicon Valley. Learn about its 669 overlay and how to get a 408 number.
The 216 area code covers Cleveland and its close-in suburbs. Learn its history and how to get a 216 number for your business.
The 412 area code is the first phone code for Pittsburgh. Learn what it covers and how to get a 412 number.
The 510 area code covers Oakland, Berkeley and Fremont in the East Bay. Learn how the 341 overlay works and how to get one.
The 916 area code covers Sacramento, the state capital. Learn about its 279 overlay and how to get one for your business.
The 818 area code covers the San Fernando Valley, with Burbank and Glendale. Learn how to get an 818 number.
The 201 area code was the first in North America, set up in 1947. It covers Jersey City, Hoboken and Hackensack.
The 844 area code is a toll-free code customers can call at no cost. Learn how it works and how to claim one.
The 866 area code is a toll-free prefix that started in July 2000. It is free to call from the US and Canada.
The 877 area code is a toll-free code added in 1998. Learn how it works, how to check callers, and how to get one.
The 888 area code is a toll-free code that began in March 1996. It works across the US and Canada and suits business lines.
The 215 area code has served Philadelphia and its suburbs since 1947. Learn about the 267 and 445 overlays and how to get one.
The 210 area code covers San Antonio and its districts. Learn about the 726 overlay, time zone, and how to get a local number.
The 704 area code has served Charlotte from the start. Learn about the 980 overlay, nearby codes, and how to get a local number.
The 614 area code has served Columbus, Ohio, since 1947. Learn about its 380 overlay and how to get a local Columbus number.
The 317 area code has served Indianapolis since 1947. Learn about the 463 overlay and how to claim a 317 number.
The 219 area code covers Gary, Hammond and the rest of Northwest Indiana. Learn its history, time zone, and how to get a 219 number.
The 813 area code covers Tampa, from Downtown and Ybor City to Brandon. Learn about the 656 overlay and how to get an 813 number.
The 612 area code covers Minneapolis, from Downtown to Uptown and the North Loop. Learn its nearby codes and how to get a local number.
The 816 area code covers Kansas City on the Missouri side. Learn about the 975 overlay and how to get a local number.
The 904 area code covers Jacksonville and Northeast Florida, out to the beaches. Learn its nearby codes and how to get one.
The 901 area code covers Memphis, from Beale Street to Germantown. Learn about nearby codes and how to get a local number.
The 504 area code has served New Orleans since 1947. Learn what it covers, its time zone, and how to get a local number.
The 801 area code serves Salt Lake City, Provo and Ogden in Utah. Learn about the 385 overlay and how to get a local number.
The 314 area code has served St. Louis since 1947, now with the 557 overlay. Learn how to get a local number.
The 410 area code has served Baltimore and eastern Maryland since 1991. Learn how it shares the region with 443 and 667.
The 414 area code has served Milwaukee since 1947, with no overlay. Learn its nearby codes, time zone, and how to get a local number.
The 405 area code has served Oklahoma City since 1947. Learn about its cities, the 572 overlay, and how to get a 405 number.
The 918 area code has served Tulsa and northeast Oklahoma since 1953. Learn about the 539 overlay and how to get one.
The 502 area code has served Louisville since 1947 and still has no overlay. Learn its nearby codes and how to get a 502 number.
The 513 area code has served Cincinnati since 1947. Learn about the 283 overlay, nearby codes, and how to get a local number.
The 716 area code covers Buffalo and Niagara Falls in western New York. Learn where it reaches and how to get a 716 number.
The 817 area code covers Fort Worth and Arlington, Texas. Learn how the 682 overlay works and how to get a local number.
The 714 area code covers north Orange County, from Anaheim to Huntington Beach. Learn how the 657 overlay works and how to get a number.
The 954 area code covers Fort Lauderdale and the rest of Broward County. Learn how the 754 overlay works and how to get a local number.
The 973 area code covers Newark, Paterson and northern New Jersey. Learn how the 862 overlay works and how to get a local number.
The 516 area code covers Nassau County on western Long Island. Learn how the 363 overlay works and how to get a number.
The 703 area code serves Arlington, Fairfax and the rest of Northern Virginia. It sits just across the river from Washington, DC.
The 757 area code covers Virginia Beach, Norfolk and Newport News. It is home to the world's largest naval base and a deep port.
The 505 area code is the first phone code in New Mexico. It serves Albuquerque, Santa Fe and Rio Rancho.
The 520 area code covers Tucson and southern Arizona. The metro is known for aerospace and optics work.
The 915 area code covers El Paso and Far West Texas on the border. Factories, an Army post and bilingual service centers drive its economy.
The 929 area code covers Brooklyn, Queens, the Bronx and Staten Island. Learn how it fits with 718 and 347, and why it draws fake calls.
The 332 area code is the newest in Manhattan, added in 2017. Learn how it compares to 212 and 646.
The 480 area code covers Mesa, Scottsdale, Tempe and Phoenix's East Valley. Learn how it overlays 602 and 623 and how to get one.
The 623 area code covers Phoenix's West Valley, like Glendale, Peoria and Surprise. Learn how it fits with 602 and 480 and how to get one.
The 209 area code covers Stockton, Modesto and Tracy in California. Learn its history, the 350 overlay, and how to get one.
The 562 area code covers Long Beach and southeast Los Angeles County. Learn how it split from 310 and how to get one.
The 559 area code covers Fresno, Visalia and the southern San Joaquin Valley. Learn about its new 357 overlay and how to get one.
The 626 area code covers the San Gabriel Valley, including Pasadena and Arcadia. Learn how it split from 818 and why 10-digit dialing is needed.
The 650 area code covers Palo Alto, San Mateo and much of Silicon Valley. Learn how it split from 415 and how to get one.
The 858 area code covers La Jolla, Del Mar and north San Diego. Learn about its overlay and how to get one.
The 909 area code covers San Bernardino, Ontario and the Inland Empire. Learn its history, its 840 overlay, and how to get one.
The 949 area code covers Irvine and coastal south Orange County, like Newport Beach. Learn how it split from 714 and how to get one.
The 719 area code covers Colorado Springs, Pueblo and the south half of Colorado. Learn its history and how to get one.
The 720 area code shares Denver, Boulder and Aurora with 303 and 983. Learn how the overlay works and how to get one.
The 239 area code covers Fort Myers, Naples and Cape Coral in Southwest Florida. Learn its history and how to get one.
The 561 area code covers Palm Beach County, from Boca Raton to Jupiter. Learn its history, the 728 overlay, and how to get one.
The 727 area code covers Pinellas County, Florida, with Clearwater and Largo. Learn how it split from 813 and how to get one.
The 850 area code covers the Florida Panhandle, from Pensacola to Tallahassee. Learn why it spans two time zones and how to get one.
The 786 area code shares Miami-Dade and the Florida Keys with 305. Learn about ten-digit dialing and how to get a Miami number.
The 470 area code is a metro Atlanta overlay on 404 and 770. Learn how it fits with 678 and 943 and why it draws fake calls.
The 678 area code was the first overlay in metro Atlanta, added in 1998. Learn how it fits with 404 and 770, and how to get one.
The 630 area code covers Aurora and most of DuPage County near Chicago. Learn about the 331 overlay and how to get one.
The 847 area code covers Chicago's northern suburbs, from Evanston to Schaumburg. Learn how it shares the region with 224 and how to get one.
The 316 area code is Wichita's number, one of the first codes from 1947. Learn how 620 split off and how to get a 316 number.
The 773 area code covers Chicago neighborhoods, from Rogers Park to Hyde Park. Learn about the 872 overlay and how to get one.
The 872 area code covers all of Chicago, layered on 312 and 773. Learn how the codes fit and how to get an 872 number.
The 913 area code covers Overland Park, Olathe and Johnson County, Kansas. Learn why it has no overlay and how to get one.
The 301 area code covers western and southern Maryland, including DC suburbs. Learn about the 240 and 227 overlays and how to get one.
The 508 area code covers Worcester, New Bedford and Cape Cod. Learn how it shares land with 774 and how to get a 508 number.
The 443 area code shares Baltimore and eastern Maryland with 410. Learn how it fits with 667 and how to get a 443 number.
The 781 area code covers the suburbs ringing Boston, from Lynn to Quincy. Learn about the 339 overlay and how to get one.
The 725 area code is the newer of two codes for Las Vegas. Learn how it overlays 702 and how to get a 725 number.
The 978 area code covers the Merrimack Valley, Cape Ann and north Massachusetts. Learn about the 351 overlay and how to get one.
The 402 area code is the first Nebraska code, covering Omaha and Lincoln. Learn about the 531 overlay and how to get one.
The 908 area code covers Elizabeth, Union County and western New Jersey. Learn why it has no overlay and how to get one.
The 610 area code covers the Lehigh Valley, Reading and Philadelphia's suburbs. Learn about the 484 and 835 overlays and how to get one.
The 856 area code covers Camden, Cherry Hill and South Jersey. Learn how it split from 609 in 1999 and how to get one.
The 732 area code covers New Brunswick and the Jersey Shore towns. Learn about the 848 overlay and how to get a 732 number.
The 518 area code covers Albany, Troy, Saratoga Springs and the Adirondacks. Learn about the 838 overlay and how to get one.
The 315 area code covers Syracuse, Utica and northern New York. Learn about the 680 overlay, fake calls, and how to get a 315 number.
The 585 area code covers Rochester and nearby western New York. Learn how it split from 716 in 2001 and how to get one.
The 970 area code covers Fort Collins, Greeley and Colorado's Western Slope. Learn about the new 748 overlay and how to get a local number.
The 262 area code wraps around Milwaukee, from Waukesha to Kenosha. Learn its nearby codes and how to get a local number.
The 815 area code covers northern Illinois, from Rockford to Joliet and Kankakee. Learn about the 779 overlay and how to get one.
The 229 area code covers Albany, Valdosta and the rest of southwest Georgia. Learn its nearby codes and how to get a local number.
The 218 area code covers the north half of Minnesota, from Duluth to Moorhead. Learn the nearby codes and how to get a local number.
The 731 area code covers West Tennessee outside Memphis, with Jackson at its heart. Learn its nearby codes and how to get a local number.
The 779 area code shares northern Illinois with 815, from Rockford to Joliet. Learn how the overlay works and how to get one.
The 207 area code is the only area code for all of Maine. Learn its story and how to get a local number.
The 351 area code shares northeast Massachusetts with 978, so calls use ten digits. Learn how it works and how to get a number.
The 336 area code covers Greensboro, Winston-Salem and High Point. Learn about the 743 overlay and how to get a local number.
The 845 area code covers New York's Hudson Valley, from Poughkeepsie to the Catskills. Learn about its 329 overlay and how to get one.
The 631 area code covers Suffolk County on eastern Long Island. Learn how it split from 516 and about the 934 overlay.
The 980 area code is an overlay on top of 704 in Charlotte. Learn how it differs from 704 and how to get one.
The 419 area code covers Toledo and northwest Ohio. Learn why it got the 567 overlay, what the 419 scam is, and more.
The 330 area code covers Akron, Canton and Youngstown in northeast Ohio. Learn how it split from 216 and shares ground with 234.
The 937 area code covers Dayton, Springfield and west central Ohio. Learn why it split from 513 and what the 326 overlay changed.
The 971 area code shares Portland, Salem and the 503 region of Oregon. Learn how the overlay works and how to get a 971 number.
The 717 area code covers Harrisburg, Lancaster, York and Hershey. Learn about the 223 overlay and how to get a 717 number.
The 865 area code covers Knoxville and East Tennessee. It spells VOL on the keypad. Learn how it split from 423 and how to get one.
The 423 area code covers Chattanooga and the Tri-Cities of East Tennessee. Learn about its 729 overlay and how to get a 423 number.
The 682 area code shares Fort Worth and Arlington with 817. Learn why calls need ten digits and how to get a 682 number.
The 281 area code was Houston's first overlay, used in Katy and Sugar Land. See what it covers and how to get one for your business.
The 806 area code covers Lubbock, Amarillo and the high plains of Texas. Learn why it never needed a second code and how to get one.
The 425 area code covers Bellevue, Redmond, Kirkland and Everett, east of Seattle. Learn how it differs from 206 and how to get a 425 number.
The 253 area code covers Tacoma and the south Puget Sound. Learn about its 1997 split from 206 and how to get a 253 number.
The 972 area code was Dallas's first overlay, used in Plano, Irving and Garland. See what it covers and how to get one for your business.
The 205 area code covers Birmingham and Tuscaloosa, and shares its land with 659. Learn how to dial, pick a number, and spot fake 205 calls.
The 608 area code covers Madison, La Crosse and southwest Wisconsin. Learn about the 353 overlay and how to get a 608 number.
The 251 area code covers Mobile and the Alabama Gulf Coast. Learn how it split from 334 and how to get one.
The 334 area code covers Montgomery, Auburn and Dothan in Alabama. Learn about its new 483 overlay and how to get a 334 number.
The 256 area code covers Huntsville, Decatur and the rest of north Alabama. Learn about its 938 overlay and how to get a 256 number.
The 907 area code is the only code for all of Alaska. Learn where it reaches, its two time zones, and how to get one.
The 928 area code covers Flagstaff, Prescott, Yuma and much of Arizona. Learn its time zone quirk and how to get a 928 number.
The 938 area code shares Huntsville and north Alabama with 256. Learn why it came in 2010 and how to get a 938 number.
The 501 area code covers Little Rock, Hot Springs and central Arkansas. It is the only Arkansas code with no overlay.
The 479 area code covers Fayetteville, Bentonville and Fort Smith in Arkansas. Learn its history, its dialing quirk, and how to get one.
The 870 area code covers Jonesboro, Pine Bluff and most of Arkansas. Learn about its new 327 overlay and how to get a number.
The 530 area code covers Redding, Chico and the top third of California. Learn about its new 837 overlay and how to get a 530 number.
The 442 area code shares the same land as 760 in Southern California. Learn where it reaches, if calls are safe, and how to get one.
The 628 area code shares San Francisco and Marin County with 415. Learn how the overlay works and how to get a 628 number.
The 661 area code covers Bakersfield, Palmdale and Santa Clarita. Learn how it split from 805, if calls are safe, and more.
The 657 area code shares Anaheim, Santa Ana and north Orange County with 714. Learn how it works and how to get a 657 number.
The 669 area code overlays 408 in San Jose, starting in 2012. Learn what it covers and how to get a 669 number.
The 747 area code shares the San Fernando Valley with 818. Learn why it was added, how to dial, and how to get one.
The 707 area code covers Napa, Sonoma and the California North Coast. Learn its history, the 369 overlay, and how to get a 707 number.
The 760 area code covers Palm Springs and much of the California desert. Learn how it works with 442 and how to get a 760 line.
The 951 area code covers Riverside, Corona and Temecula in California. Learn how it split from 909 and how to get a 951 number.
The 831 area code covers Monterey Bay, from Santa Cruz to Carmel and Salinas. It has no overlay, so seven digits still work for local calls.
The 820 area code shares California's Central Coast with 805. Learn how the overlay works and how to get an 820 number.
The 203 area code covers southwest Connecticut, from Greenwich and Stamford to New Haven. Learn its history, time zone, and how to get a 203 line.
The 475 area code shares 203's land, from Stamford to New Haven. Learn why it came in 2009 and how to get a 475 line.
The 302 area code is the one code for all of Delaware. Learn its history, if its calls are safe, and how to get one.
The 959 area code shares Hartford and most of Connecticut with 860. Learn how the overlay works and how to get a 959 line.
The 860 area code covers Hartford and most of central and east Connecticut. Learn about the 959 overlay and how to get an 860 line.
The 754 area code is the overlay for Fort Lauderdale and Broward County. Learn how it works with 954 and how to get a 754 number.
The 321 area code covers Florida's Space Coast, from Cape Canaveral to Palm Bay. Its digits echo a rocket launch countdown.
The 352 area code covers Gainesville, Ocala and the rest of north central Florida. Learn its history and how to get a 352 number.
The 772 area code covers Florida's Treasure Coast, from Vero Beach to Stuart. Learn how it split from 561 and how to get a 772 line.
The 941 area code covers Sarasota, Bradenton and Florida's Gulf Coast. Learn how it split from 813 and how to get a 941 line.
The 863 area code covers Lakeland, Winter Haven and inland Florida. Learn how it split from 941 and how to get an 863 number.
The 478 area code covers Macon, Warner Robins and central Georgia. Learn how it split from 912, its scams, and how to get one.
The 671 area code covers the whole island of Guam. Learn its time zone, its history, and how to get a 671 number.
The 706 area code covers Columbus, Augusta, Athens and Rome in Georgia. Learn how the 762 overlay works and how to get a 706 number.
The 912 area code covers Savannah and the Georgia coast. Learn where it reaches, how it shrank, and how to get a 912 number.
The 762 area code shares Augusta, Athens and north Georgia with 706. Learn why it came in 2005 and how to get a 762 line.
The 208 area code has served all of Idaho since 1947. Learn about the 986 overlay, its two time zones, and how to get one.
The 986 area code sits on top of 208 and covers all of Idaho. Learn how it came about and how to get one.
The 217 area code covers Springfield, Champaign, Decatur and central Illinois. Learn its history, the 447 overlay, and how to get a 217 number.
The 447 area code is the 217 overlay for central Illinois. Learn how to dial, pick a number, and spot fake 447 calls.
The 331 area code overlays 630 in Chicago's west suburbs, like Aurora and Naperville. Learn where it reaches and how to get a 331 number.
The 309 area code covers Peoria, Bloomington and the Quad Cities in Illinois. Learn its history, the 861 overlay, and how to get one.
The 224 area code shares Elgin, Schaumburg and the Fox Valley with 847. See where it reaches, which scams to watch, and how to get one.
The 464 area code shares Chicago's south and west suburbs with 708. Learn what it covers and how to get a 464 number.
The 618 area code has served southern Illinois since 1947. Learn what it covers, its 730 overlay, and how to get a 618 number.
The 708 area code covers Chicago's west and south suburbs, like Cicero. Learn about its 464 overlay and how to get one.
The 730 area code joined 618 in southern Illinois in 2023. See what it covers, scams to watch, and how to get a 730 number.
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