TOMBSTONE prefixes in area code 520
NANPA records 7 assigned NXX blocks to rate center TOMBSTONE in area code 520, 1.0% of the 699 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. 5 holders hold those blocks, the largest being ONVOY, LLC - AZ (2), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ (2), PEERLESS NETWORK OF ARIZONA, LLC - AZ (1). The earliest assignment on record here is 2013-08-20 and the most recent 2023-06-08. 7 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 |
|---|---|---|---|---|
| 520-210 | Onvoy ONVOY, LLC - AZ | 2013-08-20 | yes | yes |
| 520-412 | Peerless PEERLESS NETWORK OF ARIZONA, LLC - AZ | 2018-10-29 | yes | yes |
| 520-453 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 2020-04-20 | yes | yes |
| 520-457 | Lumen QWEST CORPORATION | – | yes | yes |
| 520-506 | Onvoy ONVOY, LLC - AZ | 2020-12-23 | yes | yes |
| 520-581 | IP HORIZON LLC | 2021-09-03 | yes | yes |
| 520-679 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | 2023-06-08 | 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 |
|---|---|---|---|
| ONVOY, LLC - AZ | Onvoy | 2 | 28.6% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ | Verizon | 2 | 28.6% |
| PEERLESS NETWORK OF ARIZONA, LLC - AZ | Peerless | 1 | 14.3% |
| QWEST CORPORATION | Lumen | 1 | 14.3% |
| IP HORIZON LLC | – | 1 | 14.3% |
Frequently asked
Which prefixes belong to TOMBSTONE in area code 520?
7 blocks: 210, 412, 453, 457, 506, 581, 679. The table above gives the holder of each.
Which carriers have numbers in TOMBSTONE?
ONVOY, LLC - AZ (2 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - AZ (2 blocks), PEERLESS NETWORK OF ARIZONA, LLC - AZ (1 block), QWEST CORPORATION (1 block), IP HORIZON LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is TOMBSTONE 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.