NumberingData
Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records

WHITE ROCK prefixes in area code 505

NANPA records 6 assigned NXX blocks to rate center WHITE ROCK in area code 505, 0.9% of the 685 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. 4 holders hold those blocks, the largest being CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM (3), COMCAST IP PHONE, LLC (1), BANDWIDTH.COM CLEC, LLC - NM (1). The earliest assignment on record here is 2003-06-24 and the most recent 2025-01-08. 6 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area code 651 – overlay codes cover the same geography, so a rate center is served by all of them.

6 assigned blocks – 0.9% of 505
4 holders of record
6 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
505-393 Comcast COMCAST IP PHONE, LLC 2010-04-02 yes yes
505-461 Bandwidth BANDWIDTH.COM CLEC, LLC - NM 2021-03-12 yes yes
505-538 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 2022-10-28 yes yes
505-618 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 2025-01-08 yes yes
505-672 Lumen QWEST CORPORATION – yes yes
505-709 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM 2003-06-24 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

HolderBrandBlocksShare here
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM Verizon 3 50%
COMCAST IP PHONE, LLC Comcast 1 16.7%
BANDWIDTH.COM CLEC, LLC - NM Bandwidth 1 16.7%
QWEST CORPORATION Lumen 1 16.7%

Frequently asked

Which prefixes belong to WHITE ROCK in area code 505?

6 blocks: 393, 461, 538, 618, 672, 709. The table above gives the holder of each.

Which carriers have numbers in WHITE ROCK?

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - NM (3 blocks), COMCAST IP PHONE, LLC (1 block), BANDWIDTH.COM CLEC, LLC - NM (1 block), QWEST CORPORATION (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is WHITE ROCK 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.

Other rate centers in 505

All 685 prefixes in 505