GRASS LAKE prefixes in area code 517
NANPA records 3 assigned NXX blocks to rate center GRASS LAKE in area code 517, 0.5% of the 616 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 FRONTIER NORTH, INC. - MI (1), FRACTEL, LLC (1), ACD TELECOM, INC. - MI (1). The earliest assignment on record here is 2001-11-15 and the most recent 2020-02-19. 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 |
|---|---|---|---|---|
| 517-522 | Frontier FRONTIER NORTH, INC. - MI | – | yes | yes |
| 517-842 | FRACTEL, LLC | 2020-02-19 | yes | yes |
| 517-926 | ACD TELECOM, INC. - MI | 2001-11-15 | 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 | 1 | 33.3% |
| FRACTEL, LLC | – | 1 | 33.3% |
| ACD TELECOM, INC. - MI | – | 1 | 33.3% |
Frequently asked
Which prefixes belong to GRASS LAKE in area code 517?
3 blocks: 522, 842, 926. The table above gives the holder of each.
Which carriers have numbers in GRASS LAKE?
FRONTIER NORTH, INC. - MI (1 block), FRACTEL, LLC (1 block), ACD TELECOM, INC. - 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 GRASS LAKE 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.