Texas, United States
Local Time
12:26 AM
Central Time
Area Code
621
State / Province
Texas
Country
United States
Time Zone
Central Time
City data unavailable for this area code.
Use the E.164 format for clickable phone links (RFC 3966):
<a href="tel:+16215550100">+16215550100</a><a href="tel:+16215550199">+16215550199</a>Area code 621 is a North American Numbering Plan (NANP) telephone area code assigned to Texas, United States. It is one of 29 area codes serving Texas. As population and demand for phone numbers grew, the region was divided into multiple numbering plan areas to avoid exhausting the available 7-digit number pool.
Yes. 621 is an active North American Numbering Plan (NANP) area code, currently assigned to Texas, United States. It is safe to answer or dial calls using this area code.
All numbers in the 621 area code observe Central Time (IANA timezone: America/Chicago). Central Time is UTC−6 in winter (CST) and UTC−5 in summer (CDT). When placing a call to a 621 number from a different time zone, check the current local time above to avoid calling outside of business hours.
From within Texas, dial the 7-digit local number directly if calling within the same rate center, or dial 1 + 621 + 7-digit number for long-distance calls within North America. From outside the US or Canada, dial your country's international exit code followed by 1 621 XXX XXXX. The country code for both the United States and Canada in NANP is +1.
Format 621 numbers using E.164 notation as required by RFC 3966: prefix with +1 and omit dashes and parentheses (e.g., +16215550100). This format ensures tel: links work correctly on all mobile browsers and VoIP apps. See the tel: URI formatting guide for complete examples.