SWARTZ CRK prefixes in area code 810
NANPA records 4 assigned NXX blocks to rate center SWARTZ CRK in area code 810, 0.8% of the 509 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. 2 holders hold those blocks, the largest being FRONTIER NORTH, INC. - MI (3), TELEPORT COMMUNICATIONS AMERICA, LLC - MI (1). 3 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 810-628 | Frontier FRONTIER NORTH, INC. - MI | – | yes | yes |
| 810-630 | Frontier FRONTIER NORTH, INC. - MI | – | yes | yes |
| 810-635 | Frontier FRONTIER NORTH, INC. - MI | – | no | yes |
| 810-644 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - MI | – | 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
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| FRONTIER NORTH, INC. - MI | Frontier | 3 | 75% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - MI | AT&T | 1 | 25% |
Frequently asked
Which prefixes belong to SWARTZ CRK in area code 810?
4 blocks: 628, 630, 635, 644. The table above gives the holder of each.
Which carriers have numbers in SWARTZ CRK?
FRONTIER NORTH, INC. - MI (3 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - MI (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is SWARTZ CRK 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.