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

OWASSO prefixes in area code 918

NANPA records 11 assigned NXX blocks to rate center OWASSO in area code 918, 1.4% of the 782 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. 6 holders hold those blocks, the largest being SOUTHWESTERN BELL (3), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK (3), BANDWIDTH.COM CLEC, LLC - OK (2). The earliest assignment on record here is 2001-05-09 and the most recent 2015-04-23. 7 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 539 – overlay codes cover the same geography, so a rate center is served by all of them.

11 assigned blocks – 1.4% of 918
6 holders of record
7 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
918-212 Onvoy ONVOY, LLC - OK – yes yes
918-272 AT&T SOUTHWESTERN BELL – no yes
918-274 AT&T SOUTHWESTERN BELL – no yes
918-376 AT&T SOUTHWESTERN BELL – yes yes
918-401 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK 2001-05-09 yes yes
918-516 Lumen LEVEL 3 TELECOM OF OKLAHOMA, LLC - OK – yes yes
918-562 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK – no yes
918-590 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK – no yes
918-609 Windstream PAETEC ITEL, LLC – yes yes
918-928 Bandwidth BANDWIDTH.COM CLEC, LLC - OK – yes yes
918-973 Bandwidth BANDWIDTH.COM CLEC, LLC - OK 2015-04-23 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 3 27.3%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK Verizon 3 27.3%
BANDWIDTH.COM CLEC, LLC - OK Bandwidth 2 18.2%
ONVOY, LLC - OK Onvoy 1 9.1%
LEVEL 3 TELECOM OF OKLAHOMA, LLC - OK Lumen 1 9.1%
PAETEC ITEL, LLC Windstream 1 9.1%

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 OWASSO in area code 918?

11 blocks: 212, 272, 274, 376, 401, 516, 562, 590, 609, 928, 973. The table above gives the holder of each.

Which carriers have numbers in OWASSO?

SOUTHWESTERN BELL (3 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - OK (3 blocks), BANDWIDTH.COM CLEC, LLC - OK (2 blocks), ONVOY, LLC - OK (1 block), LEVEL 3 TELECOM OF OKLAHOMA, LLC - OK (1 block), PAETEC ITEL, 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 OWASSO 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 918

All 782 prefixes in 918