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Research, engineering deep-dives, and operator playbooks from the team routing 2.4M+ daily calls across 150+ countries.
Operator guides, area-code playbooks, and the voice-infra deep dives our team ships every week.
Find out what area code 208 Idaho covers, from Boise to Coeur d'Alene, plus the 986 overlay, time zone splits, and dialing rules you need before your next call.
Discover what area code 217 Illinois covers, from Springfield to Champaign-Urbana, plus the 447 overlay, 10-digit dialing rules, and scam tips before you call.
Find out exactly where the 218 area code sits, which northern Minnesota cities and towns it covers, and what you should know before you dial or answer a call.
See exactly where the 270 area code sits in Kentucky, how it split from 502 in 1999, which cities it covers, and why the 364 overlay means 10-digit dialing.
See exactly where the 320 area code reaches across central Minnesota, why it covers more cities than any other prefix in the state, and how to get a local number there.
See exactly where the 337 area code sits in Louisiana, how it split from 318 in 1999, which Acadiana cities it covers, and why 7-digit dialing still works here.
See exactly where the 364 area code sits in Kentucky, how it launched in 2014 as an overlay on 270, which cities it covers, and why it means 10-digit dialing.
Learn where the 385 area code is located, which Wasatch Front Utah cities it covers, and how to get a local number for your home or business.
Learn where the 435 area code is located, which rural Utah towns and national-park gateways it covers, and how to get a local number for your business.
See exactly where the 502 area code sits in Kentucky, how it dates to 1947, which cities it covers, and why the new 761 overlay will soon change its dialing.
See exactly where the 504 area code sits in Louisiana, how it shrank from a statewide code to New Orleans, which cities it covers, and why 10-digit dialing is required.
Find out which southern Minnesota cities the 507 area code covers, what changed when the new 924 overlay arrived in 2024, and how ten-digit dialing now works there.
The 520 area code covers Tucson and southern Arizona, but regulators project its numbers will run out by 2030. Discover cities, history, dialing rules, and how to claim a local number now.
See every central and southern Mississippi city the 601 area code covers, why it needed the state's first overlay, and how to activate a local number fast.
See exactly where the 606 area code sits in Kentucky, how it split from 502 in 1954, which mountain cities it covers, and why 7-digit dialing still works here.
Wondering about the 706 area code? See where it reaches in Georgia, the cities and counties it serves, how ten-digit dialing works, and how to spot scam calls.
See every north metro suburb the 763 area code actually covers, why Minneapolis itself doesn't use it, and how to activate a local Minnesota number in minutes.
The 770 area code anchors Atlanta's original suburban boom, still drives strong local answer rates, and pairs well with modern VoIP tools built for Georgia.
Learn where the 801 area code is located, which Wasatch Front Utah cities it covers, and how to get a local number for your home or business.
The 808 area code covers every Hawaiian island with one prefix, builds instant local trust, and works even better paired with a modern VoIP platform.
The 928 area code covers northern, eastern, and western Arizona, including a rare daylight-saving split inside its own territory. Discover cities, history, 2026 scam alerts, and how to get a local business number.
The 938 area code overlays Huntsville and North Alabama's aerospace corridor. Discover why new lines are issued as 938 now, dialing rules, safety tips, and how to get a local business number.
See every southwest metro suburb the 952 area code actually covers, why some directories wrongly link it to Duluth, and how to activate a local Minnesota number fast.
Learn where the 972 area code is located, which Dallas-Fort Worth suburbs it covers, and how to get a local Texas number for your business.