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

MILBANK prefixes in area code 605

NANPA records 8 assigned NXX blocks to rate center MILBANK in area code 605, 1.1% of the 745 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. 7 holders hold those blocks, the largest being CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD (2), QWEST CORPORATION (1), RC COMMUNICATIONS, INC. - SD (1). The earliest assignment on record here is 2004-08-11 and the most recent 2021-03-31. 5 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

8 assigned blocks – 1.1% of 605
7 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
605-432 Lumen QWEST CORPORATION – yes yes
605-434 RC COMMUNICATIONS, INC. - SD 2005-06-15 no yes
605-438 INTERSTATE TELECOMMUNICATIONS COOPERATIVE, INC. 2006-05-12 no yes
605-445 MIDCONTINENT COMMUNICATIONS. - SD 2005-07-21 no yes
605-467 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 2004-08-11 yes yes
605-924 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD 2008-08-19 yes yes
605-949 AT&T NEW CINGULAR WIRELESS PCS, LLC - IL – yes yes
605-991 AIRUS, INC. - SD 2021-03-31 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 - SD Verizon 2 25%
QWEST CORPORATION Lumen 1 12.5%
RC COMMUNICATIONS, INC. - SD – 1 12.5%
INTERSTATE TELECOMMUNICATIONS COOPERATIVE, INC. – 1 12.5%
MIDCONTINENT COMMUNICATIONS. - SD – 1 12.5%
NEW CINGULAR WIRELESS PCS, LLC - IL AT&T 1 12.5%
AIRUS, INC. - SD – 1 12.5%

Frequently asked

Which prefixes belong to MILBANK in area code 605?

8 blocks: 432, 434, 438, 445, 467, 924, 949, 991. The table above gives the holder of each.

Which carriers have numbers in MILBANK?

CELLCO PARTNERSHIP DBA VERIZON WIRELESS - SD (2 blocks), QWEST CORPORATION (1 block), RC COMMUNICATIONS, INC. - SD (1 block), INTERSTATE TELECOMMUNICATIONS COOPERATIVE, INC. (1 block), MIDCONTINENT COMMUNICATIONS. - SD (1 block), NEW CINGULAR WIRELESS PCS, LLC - IL (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is MILBANK 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 605

All 745 prefixes in 605