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

SPENCER prefixes in area code 405

NANPA records 4 assigned NXX blocks to rate center SPENCER in area code 405, 0.5% of the 783 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 SOUTHWESTERN BELL (1), PAETEC ITEL, LLC (1), ONVOY SPECTRUM, LLC (1). The earliest assignment on record here is 2016-06-22 and the most recent 2016-06-22. 4 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 codes 234, 276, 304, 318 – overlay codes cover the same geography, so a rate center is served by all of them.

4 assigned blocks – 0.5% of 405
4 holders of record
4 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
405-771 AT&T SOUTHWESTERN BELL – yes yes
405-796 Windstream PAETEC ITEL, LLC – yes yes
405-804 Charter ONVOY SPECTRUM, LLC – yes yes
405-925 Onvoy ONVOY, LLC - OK 2016-06-22 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
SOUTHWESTERN BELL AT&T 1 25%
PAETEC ITEL, LLC Windstream 1 25%
ONVOY SPECTRUM, LLC Charter 1 25%
ONVOY, LLC - OK Onvoy 1 25%

Same rate center in other codes

Overlay codes cover the same geography, so one rate center is served by all of them.

Frequently asked

Which prefixes belong to SPENCER in area code 405?

4 blocks: 771, 796, 804, 925. The table above gives the holder of each.

Which carriers have numbers in SPENCER?

SOUTHWESTERN BELL (1 block), PAETEC ITEL, LLC (1 block), ONVOY SPECTRUM, LLC (1 block), ONVOY, LLC - OK (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is SPENCER 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 405

All 783 prefixes in 405