Texas, United States
Central Time
2:43 PM
Area Code
830
State / Province
Texas
Country
United States
Time Zone
Central Time
Area code 830 covers 130 cities and communities across Texas, based on telephone company rate center data.
Use the E.164 format for clickable phone links (RFC 3966):
<a href="tel:+18305550100">+18305550100</a><a href="tel:+18305550199">+18305550199</a>Look up which exchange in Texas a specific 830 number is homed to, and whether its block is wireline or wireless. See what a reverse lookup can establish before relying on the answer.
495 active prefixes in this area code, assigned as 3,931 thousands-blocks — pooling splits one prefix across several carriers, so each block is listed separately with the rate centre it is homed to, its carrier of record, and the switch that serves it.
Showing blocks 1–100 of 3,931
| NPA-NXX | Block | Rate centre | Type | Carrier (OCN) | Switch | LATA | LIR | Dates |
|---|---|---|---|---|---|---|---|---|
| 830-200 | 0 | Pleasanton | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - TX (004F) | SNANTXCA34Z | 566 | — | — |
| 830-200 | 1 | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | SNANTX91X7Y | 566 | — | — |
| 830-200 | 2 | Pleasanton | Wireless | ONVOY SPECTRUM, LLC (624H) | SNANTXCA80Z | 566 | — | — |
| 830-200 | 3 | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | SNANTX91X7Y | 566 | — | — |
| 830-200 | 5 | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | SNANTX91X7Y | 566 | — | — |
| 830-200 | 6 | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | SNANTX91X7Y | 566 | — | — |
| 830-200 | 7 | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | SNANTX91X7Y | 566 | — | — |
| 830-200 | 8 | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | SNANTX91X7Y | 566 | — | — |
| 830-200 | 9 | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | SNANTX91X7Y | 566 | — | — |
| 830-200 | A | Pleasanton | Wireless | T-MOBILE USA, INC. (6529) | SNANTX91X7Y | 566 | — | — |
| 830-201 | 0 | Marble Falls | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - TX (004F) | SNANTXCA34Z | 566 | — | — |
| 830-201 | 1 | Marble Falls | Landline or VoIP | PEERLESS NETWORK OF TEXAS, LLC - TX (177F) | SAN ANTONIO | 566 | — | — |
| 830-201 | 2 | Marble Falls | Wireless | T-MOBILE USA, INC. (6529) | FRBGTXXAUMD | 566 | — | — |
| 830-201 | 3 | Marble Falls | Landline or VoIP | ONVOY, LLC - TX (903C) | SNANTXDIRMD | 566 | — | — |
| 830-201 | 4 | Marble Falls | Landline or VoIP | TWC IP ENABLED SERVICES, LLC (793K) | FRBGTXXAX3X | 566 | — | — |
| 830-201 | 5 | Marble Falls | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - TX (7138) | SNANTXCA41Z | 566 | — | — |
| 830-201 | 6 | Marble Falls | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - TX (7138) | SNANTXCA41Z | 566 | — | — |
| 830-201 | 7 | Marble Falls | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - TX (7138) | SNANTXCA41Z | 566 | — | — |
| 830-201 | 8 | Marble Falls | Landline or VoIP | TELEPORT COMMUNICATIONS AMERICA, LLC - TX (7138) | SNANTXCA41Z | 566 | — | — |
| 830-201 | 9 | Marble Falls | Wireless | WORLDCALL INTERCONNECT INC. (139F) | SNAOTXWC0MD | 566 | — | — |
| 830-201 | A | Marble Falls | Landline or VoIP | TWC IP ENABLED SERVICES, LLC (793K) | FRBGTXXAX3X | 566 | — | — |
| 830-202 | 0 | Cotulla | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SAN ANTONIO | 566 | — | — |
| 830-202 | 1 | Cotulla | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SAN ANTONIO | 566 | — | — |
| 830-202 | 2 | Cotulla | Landline or VoIP | PEERLESS NETWORK OF TEXAS, LLC - TX (177F) | SAN ANTONIO | 566 | — | — |
| 830-202 | 3 | Cotulla | Landline or VoIP | AT&T CORP. (516C) | SNANTXCA58Z | 566 | — | — |
| 830-202 | 4 | Cotulla | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SAN ANTONIO | 566 | — | — |
| 830-202 | 5 | Cotulla | Landline or VoIP | ONVOY, LLC - TX (903C) | SNANTXDIRMD | 566 | — | — |
| 830-202 | 6 | Cotulla | Landline or VoIP | ONVOY, LLC - TX (903C) | SNANTXDIRMD | 566 | — | — |
| 830-202 | 7 | Cotulla | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SAN ANTONIO | 566 | — | — |
| 830-202 | 8 | Cotulla | Landline or VoIP | ONVOY, LLC - TX (903C) | SNANTXDIRMD | 566 | — | — |
| 830-202 | 9 | Cotulla | Landline or VoIP | ONVOY, LLC - TX (903C) | SNANTXDIRMD | 566 | — | — |
| 830-202 | A | Cotulla | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SAN ANTONIO | 566 | — | — |
| 830-203 | 0 | Gonzales | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SNANTXCA55Z | 566 | — | — |
| 830-203 | 1 | Gonzales | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SNANTXCA55Z | 566 | — | — |
| 830-203 | 2 | Gonzales | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SNANTXCA55Z | 566 | — | — |
| 830-203 | 3 | Gonzales | Landline or VoIP | MCIMETRO ACCESS TRANSMISSION SERVICES LLC (7229) | SAN ANTIONIO | 566 | — | — |
| 830-203 | 4 | Gonzales | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SNANTXCA55Z | 566 | — | — |
| 830-203 | 5 | Gonzales | Landline or VoIP | TWC IP ENABLED SERVICES, LLC (793K) | SNANTXCAY9X | 566 | — | — |
| 830-203 | 6 | Gonzales | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - TX (004F) | SNANTXCA34Z | 566 | — | — |
| 830-203 | 7 | Gonzales | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SNANTXCA55Z | 566 | — | — |
| 830-203 | 8 | Gonzales | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SNANTXCA55Z | 566 | — | — |
| 830-203 | 9 | Gonzales | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SNANTXCA55Z | 566 | — | — |
| 830-203 | A | Gonzales | Wireless | NEW CINGULAR WIRELESS PCS, LLC - IL (6534) | SNANTXCA55Z | 566 | — | — |
| 830-205 | 0 | Batesville | Landline or VoIP | TELNYX LLC (073H) | SNANTXCAHMD | 566 | — | — |
| 830-205 | 1 | Batesville | Landline or VoIP | PEERLESS NETWORK OF TEXAS, LLC - TX (177F) | SAN ANTONIO | 566 | — | — |
| 830-205 | 2 | Batesville | Landline or VoIP | TELNYX LLC (073H) | SNANTXCAHMD | 566 | — | — |
| 830-205 | 3 | Batesville | Landline or VoIP | ONVOY, LLC - TX (903C) | SNANTXDIRMD | 566 | — | — |
| 830-205 | 4 | Batesville | Landline or VoIP | ONVOY, LLC - TX (903C) | SNANTXDIRMD | 566 | — | — |
| 830-205 | 5 | Batesville | Landline or VoIP | ONVOY, LLC - TX (903C) | SNANTXDIRMD | 566 | — | — |
| 830-205 | 6 | Batesville | Landline or VoIP | TWC IP ENABLED SERVICES, LLC (793K) | SNANTXCAY9X | 566 | — | — |
| 830-205 | 7 | Batesville | Landline or VoIP | EXIANT COMMUNICATIONS LLC (114J) | — | 566 | — | — |
| 830-205 | 8 | Batesville | Landline or VoIP | TELNYX LLC (073H) | SNANTXDIX6X | 566 | — | — |
| 830-205 | 9 | Batesville | Landline or VoIP | PEERLESS NETWORK OF TEXAS, LLC - TX (177F) | SAN ANTONIO | 566 | — | — |
| 830-205 | A | Batesville | Landline or VoIP | PEERLESS NETWORK OF TEXAS, LLC - TX (177F) | SAN ANTONIO | 566 | — | — |
| 830-206 | 0 | Big Wells | Landline or VoIP | ONVOY, LLC - TX (903C) | SNANTXDIRMD | 566 | — | — |
| 830-206 | 1 | Big Wells | Landline or VoIP | PEERLESS NETWORK OF TEXAS, LLC - TX (177F) | SAN ANTONIO | 566 | — | — |
| 830-206 | 2 | Big Wells | Landline or VoIP | TELNYX LLC (073H) | SNANTXCAHMD | 566 | — | — |
| 830-206 | 4 | Big Wells | Wireless | CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX (6506) | SNANTX39TMD | 566 | — | — |
| 830-206 | 5 | Big Wells | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - TX (004F) | SNANTXCA34Z | 566 | — | — |
| 830-206 | 6 | Big Wells | Landline or VoIP | ONVOY, LLC - TX (903C) | SNANTXDIRMD | 566 | — | — |
| 830-206 | 7 | Big Wells | Landline or VoIP | ONVOY, LLC - TX (903C) | SNANTXDIRMD | 566 | — | — |
| 830-206 | 8 | Big Wells | Landline or VoIP | BANDWIDTH.COM CLEC, LLC - TX (004F) | SNANTXCA34Z | 566 | — | — |
| 830-206 | 9 | Big Wells | Landline or VoIP | PEERLESS NETWORK OF TEXAS, LLC - TX (177F) | SAN ANTONIO | 566 | — | — |
| 830-206 | A | Big Wells | Landline or VoIP | PEERLESS NETWORK OF TEXAS, LLC - TX (177F) | SAN ANTONIO | 566 | — | — |
| 830-207 | A | Fredericksburg | Landline or VoIP | SPOK, INC. (6630) | SNANTXCA50Z | 566 | — | — |
| 830-208 | 0 | Carrizo Springs | Landline or VoIP | ONVOY, LLC - TX (903C) | SNANTXDIRMD | 566 | — | — |
| 830-208 | 1 | Carrizo Springs | Landline or VoIP | PEERLESS NETWORK OF TEXAS, LLC - TX (177F) | SAN ANTONIO | 566 | — | — |
| 830-208 | 2 | Carrizo Springs | Landline or VoIP | ONVOY, LLC - TX (903C) | SNANTXDIRMD | 566 | — | — |
| 830-208 | 4 | Carrizo Springs | Landline or VoIP | ONVOY, LLC - TX (903C) | SNANTXDIRMD | 566 | — | — |
| 830-208 | 5 | Carrizo Springs | Landline or VoIP | ONVOY, LLC - TX (903C) | SNANTXDIRMD | 566 | — | — |
| 830-208 | 6 | Carrizo Springs | Landline or VoIP | ONVOY, LLC - TX (903C) | SNANTXDIRMD | 566 | — | — |
| 830-208 | 7 | Carrizo Springs | Landline or VoIP | ONVOY, LLC - TX (903C) | SNANTXDIRMD | 566 | — | — |
| 830-208 | 8 | Carrizo Springs | Landline or VoIP | ONVOY, LLC - TX (903C) | SNANTXDIRMD | 566 | — | — |
| 830-208 | 9 | Carrizo Springs | Landline or VoIP | PEERLESS NETWORK OF TEXAS, LLC - TX (177F) | SAN ANTONIO | 566 | — | — |
| 830-208 | A | Carrizo Springs | Landline or VoIP | PEERLESS NETWORK OF TEXAS, LLC - TX (177F) | SAN ANTONIO | 566 | — | — |
| 830-209 | 0 | Catarina | Landline or VoIP | TELNYX LLC (073H) | SNANTXCAHMD | 566 | — | — |
| 830-209 | 1 | Catarina | Landline or VoIP | PEERLESS NETWORK OF TEXAS, LLC - TX (177F) | SAN ANTONIO | 566 | — | — |
| 830-209 | 2 | Catarina | Wireless | ONVOY SPECTRUM, LLC (624H) | SNANTXCA80Z | 566 | — | — |
| 830-209 | 3 | Catarina | Wireless | ONVOY SPECTRUM, LLC (624H) | SNANTXCA80Z | 566 | — | — |
| 830-209 | 4 | Catarina | Wireless | ONVOY SPECTRUM, LLC (624H) | SNANTXCA80Z | 566 | — | — |
| 830-209 | 5 | Catarina | Landline or VoIP | ONVOY, LLC - TX (903C) | SNANTXDIRMD | 566 | — | — |
| 830-209 | 6 | Catarina | Landline or VoIP | TELNYX LLC (073H) | SNANTXDIX6X | 566 | — | — |
| 830-209 | 7 | Catarina | Landline or VoIP | ONVOY, LLC - TX (903C) | SNANTXDIRMD | 566 | — | — |
| 830-209 | 8 | Catarina | Landline or VoIP | TON80 COMMUNICATIONS, LLC (516J) | SNANTXCA88Z | 566 | — | — |
| 830-209 | 9 | Catarina | Landline or VoIP | PEERLESS NETWORK OF TEXAS, LLC - TX (177F) | SAN ANTONIO | 566 | — | — |
| 830-209 | A | Catarina | Landline or VoIP | PEERLESS NETWORK OF TEXAS, LLC - TX (177F) | SAN ANTONIO | 566 | — | — |
| 830-210 | 0 | Charlotte | Landline or VoIP | TELNYX LLC (073H) | SNANTXDIX6X | 566 | — | — |
| 830-210 | 1 | Charlotte | Landline or VoIP | PEERLESS NETWORK OF TEXAS, LLC - TX (177F) | SAN ANTONIO | 566 | — | — |
| 830-210 | 2 | Charlotte | Landline or VoIP | TELNYX LLC (073H) | SNANTXCAHMD | 566 | — | — |
| 830-210 | 3 | Charlotte | Landline or VoIP | COMMIO, LLC (939H) | SNANTXCA73Z | 566 | — | — |
| 830-210 | 4 | Charlotte | Landline or VoIP | COMMIO, LLC (939H) | SNANTXCA73Z | 566 | — | — |
| 830-210 | 5 | Charlotte | Landline or VoIP | COMMIO, LLC (939H) | SNANTXCA73Z | 566 | — | — |
| 830-210 | 6 | Charlotte | Landline or VoIP | COMMIO, LLC (939H) | SNANTXCA73Z | 566 | — | — |
| 830-210 | 7 | Charlotte | Landline or VoIP | COMMIO, LLC (939H) | SNANTXCA73Z | 566 | — | — |
| 830-210 | 8 | Charlotte | Landline or VoIP | COMMIO, LLC (939H) | SNANTXCA73Z | 566 | — | — |
| 830-210 | 9 | Charlotte | Landline or VoIP | PEERLESS NETWORK OF TEXAS, LLC - TX (177F) | SAN ANTONIO | 566 | — | — |
| 830-210 | A | Charlotte | Landline or VoIP | PEERLESS NETWORK OF TEXAS, LLC - TX (177F) | SAN ANTONIO | 566 | — | — |
| 830-212 | 0 | Del Rio | Wireless | STPCS JOINT VENTURE, LLC (4290) | SNANTX91X7Y | 566 | — | — |
| 830-212 | 1 | Del Rio | Wireless | STPCS JOINT VENTURE, LLC (4290) | SNANTX91X7Y | 566 | — | — |
| 830-212 | 2 | Del Rio | Wireless | STPCS JOINT VENTURE, LLC (4290) | SNANTX91X7Y | 566 | — | — |
Block-level assignments from the North American Numbering Plan administrator, via localcallingguide.com.
Assigned Prefixes
495
Assignment Blocks
3,931
Rate Centers
130
Carriers of Record
55
| Type | Blocks | Share |
|---|---|---|
| Landline | 637 | 16% |
| Landline or VoIP | 1,891 | 48% |
| Wireless | 1,403 | 36% |
| Carrier | Blocks |
|---|---|
| NEW CINGULAR WIRELESS PCS, LLC - IL | 634 |
| ONVOY, LLC - TX | 569 |
| SOUTHWESTERN BELL | 335 |
| T-MOBILE USA, INC. | 267 |
| PEERLESS NETWORK OF TEXAS, LLC - TX | 189 |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TX | 175 |
| FRONTIER SOUTHWEST INC DBA FRONTIER COMM OF TEXAS | 154 |
| ONVOY SPECTRUM, LLC | 154 |
| BANDWIDTH.COM CLEC, LLC - TX | 143 |
| STPCS JOINT VENTURE, LLC | 143 |
| 45 other carriers | 1,168 |
Carrier of record for each block. Numbers ported to another carrier keep their original block assignment, so this is not a lookup of who serves a given number today.
| Rate Center | Prefixes | Blocks |
|---|---|---|
| New Braunfels | 35 | 298 |
| Del Rio | 31 | 277 |
| Kerrville | 22 | 107 |
| Seguin | 21 | 181 |
| Eagle Pass | 19 | 177 |
| Fredericksburg | 14 | 91 |
| Uvalde | 14 | 127 |
| Boerne | 12 | 110 |
| Marble Falls | 12 | 104 |
| Floresville | 9 | 83 |
| Gonzales | 9 | 80 |
| Pearsall | 9 | 69 |
| Pleasanton | 9 | 97 |
| Hondo | 8 | 84 |
| Kenedy | 8 | 78 |
| Carrizo Springs | 7 | 72 |
| New Braunfels EMS | 7 | 47 |
| Bandera | 6 | 61 |
| Crystal City | 6 | 48 |
| Bulverde | 5 | 36 |
| Castroville | 5 | 55 |
| Cotulla | 5 | 49 |
| Dilley | 5 | 42 |
| Gillett | 5 | 50 |
| Johnson City | 5 | 41 |
| Luling | 5 | 55 |
| Asherton | 4 | 39 |
| Batesville | 4 | 44 |
| Blanco | 4 | 39 |
| Brackettville | 4 | 38 |
| Devine | 4 | 41 |
| Granite Shoals | 4 | 32 |
| Jourdanton | 4 | 32 |
| Karnes City-Falls City | 4 | 39 |
| Marion | 4 | 30 |
| Poteet | 4 | 38 |
| Runge | 4 | 41 |
| Big Wells | 3 | 29 |
| Charlotte | 3 | 25 |
| Christine | 3 | 29 |
| Knippa | 3 | 7 |
| La Pryor | 3 | 26 |
| Lacoste | 3 | 19 |
| Lavernia | 3 | 28 |
| Lytle | 3 | 21 |
| Medina Lake | 3 | 22 |
| Nixon | 3 | 29 |
| Pipe Creek | 3 | 20 |
| Poth | 3 | 30 |
| Sabinal | 3 | 32 |
| Seguin EMS | 3 | 23 |
| Somerset | 3 | 23 |
| Sutherland Springs | 3 | 24 |
| Balcones | 2 | 12 |
| Barksdale | 2 | 3 |
| Boerne PPCP | 2 | 12 |
| Campbellton | 2 | 16 |
| Catarina | 2 | 21 |
| Center Point | 2 | 5 |
| Comfort | 2 | 14 |
| Cost | 2 | 15 |
| D'Hanis | 2 | 4 |
| Doss | 2 | 5 |
| Fowlerton | 2 | 4 |
| Frio Canyon | 2 | 10 |
| Harper | 2 | 4 |
| Ingram | 2 | 4 |
| Kingsbury | 2 | 10 |
| Kosciusko | 2 | 22 |
| Lacoste EMS | 2 | 15 |
| Medina | 2 | 5 |
| Medina Lake EMS | 2 | 12 |
| Pleasanton EMS | 2 | 12 |
| Rocksprings | 2 | 7 |
| Rocky Creek | 2 | 10 |
| Round Mountain | 2 | 13 |
| Sabina | 2 | 6 |
| Sisterdale | 2 | 12 |
| Smiley | 2 | 19 |
| Stockdale | 2 | 15 |
| Stonewall | 2 | 13 |
| Tarpley | 2 | 4 |
| Utopia | 2 | 4 |
| Vinegarroon | 2 | 4 |
| Waelder | 2 | 6 |
| Willow City | 2 | 15 |
| Artesia Wells | 1 | 1 |
| Balcones EMS | 1 | 1 |
| Bandera EMS | 1 | 11 |
| Bulverde EMS | 1 | 1 |
| Camp Wood | 1 | 1 |
| Campbellton EMS | 1 | 10 |
| Castroville EMS | 1 | 11 |
| Charlotte PPCP | 1 | 8 |
| Christine EMS | 1 | 11 |
| Cranes Mill | 1 | 1 |
| Cranes Mill 905 | 1 | 5 |
| Cranes Mill EMS | 1 | 9 |
| Devine EMS | 1 | 11 |
| Floresville PPCP | 1 | 11 |
| Garven Store | 1 | 1 |
| Hancock | 1 | 8 |
| Hancock 906 | 1 | 4 |
| Hancock EMS | 1 | 9 |
| Hondo EMS | 1 | 11 |
| Hunt | 1 | 1 |
| Jourdanton PPCP | 1 | 8 |
| Kenberg | 1 | 8 |
| Kenberg EMS | 1 | 8 |
| Lavernia PPCP | 1 | 10 |
| Leesville | 1 | 8 |
| Lytle EMS | 1 | 11 |
| Marion EMS | 1 | 7 |
| Millett | 1 | 1 |
| Mountain Home | 1 | 1 |
| Pipe Creek EMS | 1 | 9 |
| Poteet EMS | 1 | 10 |
| Sabina EMS | 1 | 1 |
| San Antonio | 1 | 1 |
| San Miguel | 1 | 1 |
| Sattler | 1 | 10 |
| Sattler 907 | 1 | 7 |
| Sattler EMS | 1 | 6 |
| Saturn | 1 | 9 |
| Smithson Valley | 1 | 1 |
| Smithson Valley 904 | 1 | 7 |
| Smithson Valley EMS | 1 | 10 |
| Somerset PPCP | 1 | 7 |
| Sutherland Springs PPCP | 1 | 11 |
| Westhoff | 1 | 1 |
A rate center is the telephone exchange area a number is homed to. It sets local calling boundaries, and is not the caller's current location.
Area code 830 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. 830 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.
Area code 830 covers 130 cities and communities in Texas, including Artesia Wells, Asherton, Balcones, Balcones Ems, Bandera, and 125 more localities. This is based on telephone company rate center data — the geographic areas carriers use to determine local calling boundaries and to assign numbers when a business or individual requests a phone number in a specific city.
All numbers in the 830 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 830 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 + 830 + 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 1 830 XXX XXXX. The country code for both the United States and Canada in NANP is +1.
Format 830 numbers using E.164 notation as required by RFC 3966: prefix with +1 and omit dashes and parentheses (e.g., +18305550100). This format ensures tel: links work correctly on all mobile browsers and VoIP apps. See the tel: URI formatting guide for complete examples.