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

MAYVILLE prefixes in area code 920

NANPA records 5 assigned NXX blocks to rate center MAYVILLE in area code 920, 0.6% 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. 3 holders hold those blocks, the largest being CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI (3), WISCONSIN BELL INC (1), TELEPORT COMMUNICATIONS AMERICA, LLC WI (1). The earliest assignment on record here is 2002-04-15 and the most recent 2020-04-27. 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 701, 716, 989 – overlay codes cover the same geography, so a rate center is served by all of them.

5 assigned blocks – 0.6% of 920
3 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
920-212 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI – yes yes
920-214 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI – yes yes
920-387 AT&T WISCONSIN BELL INC – yes yes
920-644 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC WI 2002-04-15 yes yes
920-669 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI 2020-04-27 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 - WI Verizon 3 60%
WISCONSIN BELL INC AT&T 1 20%
TELEPORT COMMUNICATIONS AMERICA, LLC WI AT&T 1 20%

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 MAYVILLE in area code 920?

5 blocks: 212, 214, 387, 644, 669. The table above gives the holder of each.

Which carriers have numbers in MAYVILLE?

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - WI (3 blocks), WISCONSIN BELL INC (1 block), TELEPORT COMMUNICATIONS AMERICA, LLC WI (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is MAYVILLE 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 920

All 785 prefixes in 920