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

CYPRESS prefixes in area code 281

NANPA records 7 assigned NXX blocks to rate center CYPRESS in area code 281, 0.9% of the 786 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. 3 holders hold those blocks, the largest being SOUTHWESTERN BELL (5), ETS TELEPHONE COMPANY, INC. (1), AT&T ENTERPRISES, LLC (1). The earliest assignment on record here is 2005-12-08 and the most recent 2006-01-13. 5 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 346, 618, 657, 713 – overlay codes cover the same geography, so a rate center is served by all of them.

7 assigned blocks – 0.9% of 281
3 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
281-213 AT&T SOUTHWESTERN BELL – yes yes
281-246 ETS TELEPHONE COMPANY, INC. – no yes
281-256 AT&T SOUTHWESTERN BELL – yes yes
281-304 AT&T SOUTHWESTERN BELL – yes yes
281-373 AT&T SOUTHWESTERN BELL – no yes
281-746 AT&T AT&T ENTERPRISES, LLC 2006-01-13 yes yes
281-758 AT&T SOUTHWESTERN BELL 2005-12-08 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

HolderBrandBlocksShare here
SOUTHWESTERN BELL AT&T 5 71.4%
ETS TELEPHONE COMPANY, INC. – 1 14.3%
AT&T ENTERPRISES, LLC AT&T 1 14.3%

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 CYPRESS in area code 281?

7 blocks: 213, 246, 256, 304, 373, 746, 758. The table above gives the holder of each.

Which carriers have numbers in CYPRESS?

SOUTHWESTERN BELL (5 blocks), ETS TELEPHONE COMPANY, INC. (1 block), AT&T ENTERPRISES, 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 CYPRESS 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 281

All 786 prefixes in 281