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

HAYWARD prefixes in area code 715

NANPA records 6 assigned NXX blocks to rate center HAYWARD in area code 715, 0.8% of the 785 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 TELEPHONE USA OF WISCONSIN, LLC DBA CENTURYLINK (2), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI (1), ONVOY, LLC - WI (1). The earliest assignment on record here is 2001-12-05 and the most recent 2020-12-21. 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 341, 510 – overlay codes cover the same geography, so a rate center is served by all of them.

6 assigned blocks – 0.8% of 715
5 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
715-558 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 2001-12-05 yes yes
715-624 Onvoy ONVOY, LLC - WI 2020-12-21 yes yes
715-634 Lumen TELEPHONE USA OF WISCONSIN, LLC DBA CENTURYLINK – no yes
715-638 Lumen TELEPHONE USA OF WISCONSIN, LLC DBA CENTURYLINK – yes yes
715-699 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
715-934 NORVADO, INC. – 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
TELEPHONE USA OF WISCONSIN, LLC DBA CENTURYLINK Lumen 2 33.3%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI Verizon 1 16.7%
ONVOY, LLC - WI Onvoy 1 16.7%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 1 16.7%
NORVADO, INC. – 1 16.7%

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 HAYWARD in area code 715?

6 blocks: 558, 624, 634, 638, 699, 934. The table above gives the holder of each.

Which carriers have numbers in HAYWARD?

TELEPHONE USA OF WISCONSIN, LLC DBA CENTURYLINK (2 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI (1 block), ONVOY, LLC - WI (1 block), NEW CINGULAR WIRELESS PCS, LLC - IL (1 block), NORVADO, INC. (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is HAYWARD 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 715

All 785 prefixes in 715