SULIVNGDNS prefixes in area code 423
NANPA records 4 assigned NXX blocks to rate center SULIVNGDNS in area code 423, 0.5% of the 764 blocks assigned in the code. A rate center is the billing geography a block is allocated to – NANPA truncates the name to ten characters, so read it as a NANPA label rather than a town. 2 holders hold those blocks, the largest being UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN (2), BANDWIDTH.COM CLEC, LLC - TN (2). The earliest assignment on record here is 2012-02-21 and the most recent 2026-02-10. 4 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 423-349 | Lumen UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN | – | yes | yes |
| 423-399 | Bandwidth BANDWIDTH.COM CLEC, LLC - TN | 2026-02-10 | yes | yes |
| 423-516 | Lumen UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN | 2012-02-21 | yes | yes |
| 423-583 | Bandwidth BANDWIDTH.COM CLEC, LLC - TN | 2018-09-26 | yes | yes |
The holder is who received the block from the numbering administrator. It is not necessarily the carrier serving a given number: numbers move with their owners, and a pooled block is shared.
Who holds the blocks
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN | Lumen | 2 | 50% |
| BANDWIDTH.COM CLEC, LLC - TN | Bandwidth | 2 | 50% |
Frequently asked
Which prefixes belong to SULIVNGDNS in area code 423?
4 blocks: 349, 399, 516, 583. The table above gives the holder of each.
Which carriers have numbers in SULIVNGDNS?
UNITED TELEPHONE-SOUTHEAST-TN DBA CENTURYLINK - TN (2 blocks), BANDWIDTH.COM CLEC, LLC - TN (2 blocks). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is SULIVNGDNS a city?
It is a rate center – the unit NANPA allocates number blocks to. Its name is abbreviated to ten characters and is not necessarily a settlement: we print it as recorded rather than guess at the full name.