UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN
83 prefixes in 423 · initial assignments from the NANPA CO code file, 09/17/2026
| NPA-NXX | Rate center | OCN | Assigned | Pooled |
|---|---|---|---|---|
| 423-224 | KINGSPORT | 4510 | — | — |
| 423-229 | KINGSPORT | 4510 | — | — |
| 423-230 | KINGSPORT | 4510 | — | — |
| 423-232 | JOHNSON CY | 4510 | — | — |
| 423-234 | BAILEYTON | 4510 | — | — |
| 423-239 | MIDWAY SUL | 4510 | — | — |
| 423-245 | KINGSPORT | 4510 | — | — |
| 423-246 | KINGSPORT | 4510 | — | — |
| 423-247 | KINGSPORT | 4510 | — | — |
| 423-256 | CHURCHHILL | 4510 | — | Yes |
| 423-257 | LIMESTONE | 4510 | — | — |
| 423-262 | JOHNSON CY | 4510 | — | Yes |
| 423-274 | BRISTOL | 4510 | — | Yes |
| 423-279 | BLOUNTVL | 4510 | — | Yes |
| 423-282 | JOHNSON CY | 4510 | — | — |
| 423-283 | JOHNSON CY | 4510 | — | — |
| 423-288 | KINGSPORT | 4510 | — | — |
| 423-323 | BLOUNTVL | 4510 | — | — |
| 423-325 | BLOUNTVL | 4510 | — | Yes |
| 423-343 | KINGSPORT | 4510 | — | Yes |
| 423-348 | FALLBRANCH | 4510 | — | — |
| 423-349 | SULIVNGDNS | 4510 | — | Yes |
| 423-354 | BLOUNTVL | 4510 | — | Yes |
| 423-357 | CHURCHHILL | 4510 | — | — |
| 423-359 | GREENEVL | 4510 | 2002-08-13 | — |
| 423-378 | KINGSPORT | 4510 | — | — |
| 423-390 | KINGSPORT | 4510 | 2002-08-13 | Yes |
| 423-391 | BLUFF CITY | 4510 | — | Yes |
| 423-392 | KINGSPORT | 4510 | — | — |
| 423-410 | JOHNSON CY | 4510 | — | — |
| 423-422 | MOSHEIM | 4510 | — | Yes |
| 423-431 | JOHNSON CY | 4510 | — | Yes |
| 423-433 | JOHNSON CY | 4510 | — | Yes |
| 423-434 | JOHNSON CY | 4510 | — | — |
| 423-439 | JOHNSON CY | 4510 | — | Yes |
| 423-461 | JOHNSON CY | 4510 | — | Yes |
| 423-467 | MIDWAY | 4510 | — | Yes |
| 423-474 | STONEY CRK | 4510 | — | — |
| 423-477 | MIDWAY | 4510 | — | — |
| 423-516 | SULIVNGDNS | 4510 | 2012-02-21 | Yes |
| 423-538 | BLUFF CITY | 4510 | — | — |
| 423-542 | ELIZABTHTN | 4510 | — | — |
| 423-543 | ELIZABTHTN | 4510 | — | — |
| 423-547 | ELIZABTHTN | 4510 | — | — |
| 423-578 | KINGSPORT | 4510 | — | Yes |
| 423-610 | JOHNSON CY | 4510 | — | — |
| 423-636 | GREENEVL | 4510 | — | — |
| 423-638 | GREENEVL | 4510 | — | — |
| 423-639 | GREENEVL | 4510 | — | — |
| 423-652 | BRISTOL | 4510 | — | Yes |
| 423-725 | HAMPTON | 4510 | — | — |
| 423-727 | MOUNTAINCY | 4510 | — | — |
| 423-735 | ERWIN | 4510 | — | Yes |
| 423-743 | ERWIN | 4510 | — | — |
| 423-753 | JONESBORO | 4510 | — | — |
| 423-764 | BRISTOL | 4510 | — | — |
| 423-768 | BUTLER | 4510 | — | — |
| 423-772 | ROAN MT | 4510 | — | — |
| 423-783 | GREENEVL | 4510 | — | — |
| 423-787 | GREENEVL | 4510 | — | — |
| 423-788 | JONESBORO | 4510 | — | Yes |
| 423-789 | BRISTOL | 4510 | 2002-08-13 | Yes |
| 423-798 | GREENEVL | 4510 | — | — |
| 423-844 | BRISTOL | 4510 | — | Yes |
| 423-854 | JOHNSON CY | 4510 | — | — |
| 423-857 | KINGSPORT | 4510 | — | — |
| 423-878 | BRISTOL | 4510 | — | — |
| 423-896 | HAMPTON | 4510 | — | Yes |
| 423-897 | FALLBRANCH | 4510 | — | Yes |
| 423-913 | JONESBORO | 4510 | — | Yes |
| 423-915 | JOHNSON CY | 4510 | — | Yes |
| 423-917 | BLOUNTVL | 4510 | — | — |
| 423-926 | JOHNSON CY | 4510 | — | — |
| 423-928 | JOHNSON CY | 4510 | — | — |
| 423-929 | JOHNSON CY | 4510 | — | — |
| 423-938 | JOHNSON CY | 4510 | 2002-08-13 | — |
| 423-952 | JOHNSON CY | 4510 | — | Yes |
| 423-953 | JOHNSON CY | 4510 | — | — |
| 423-968 | BRISTOL | 4510 | — | — |
| 423-975 | JOHNSON CY | 4510 | — | — |
| 423-979 | JOHNSON CY | 4510 | — | Yes |
| 423-989 | BRISTOL | 4510 | — | — |
| 423-990 | BRISTOL | 4510 | — | — |
These are initial assignees from NANPA CO-code records — because of number portability, the current serving carrier of individual numbers may differ. Bulk export requires a membership.