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

TWOHARBORS prefixes in area code 218

NANPA records 4 assigned NXX blocks to rate center TWOHARBORS in area code 218, 0.6% of the 708 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 CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN (2), ONVOY, LLC - MN (1), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN (1). The earliest assignment on record here is 2005-07-07 and the most recent 2015-12-22. 3 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.

4 assigned blocks – 0.6% of 218
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
218-510 Frontier CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN 2015-12-22 yes yes
218-595 Onvoy ONVOY, LLC - MN 2005-07-07 yes yes
218-830 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN – yes yes
218-834 Frontier CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN – no 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
CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN Frontier 2 50%
ONVOY, LLC - MN Onvoy 1 25%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN Verizon 1 25%

Frequently asked

Which prefixes belong to TWOHARBORS in area code 218?

4 blocks: 510, 595, 830, 834. The table above gives the holder of each.

Which carriers have numbers in TWOHARBORS?

CITIZENS TELECOM CO MN-FRONTIER CITIZENS COM-MN (2 blocks), ONVOY, LLC - MN (1 block), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - MN (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is TWOHARBORS 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 218

All 708 prefixes in 218