GRUNDY CTR prefixes in area code 319
NANPA records 5 assigned NXX blocks to rate center GRUNDY CTR in area code 319, 0.9% of the 565 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. 4 holders hold those blocks, the largest being WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS (2), HEART OF IOWA VENTURES, L.L.C. - IA (1), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA (1). The earliest assignment on record here is 2003-07-17 and the most recent 2025-08-01. 4 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 |
|---|---|---|---|---|
| 319-245 | Windstream WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS | 2015-06-25 | yes | yes |
| 319-418 | HEART OF IOWA VENTURES, L.L.C. - IA | 2025-08-01 | yes | yes |
| 319-823 | Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | 2003-07-17 | yes | yes |
| 319-824 | Windstream WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS | – | yes | yes |
| 319-825 | AUREON COMMUNICATIONS, LLC | – | 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
| Holder | Brand | Blocks | Share here |
|---|---|---|---|
| WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS | Windstream | 2 | 40% |
| HEART OF IOWA VENTURES, L.L.C. - IA | – | 1 | 20% |
| CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA | Verizon | 1 | 20% |
| AUREON COMMUNICATIONS, LLC | – | 1 | 20% |
Frequently asked
Which prefixes belong to GRUNDY CTR in area code 319?
5 blocks: 245, 418, 823, 824, 825. The table above gives the holder of each.
Which carriers have numbers in GRUNDY CTR?
WINDSTREAM IOWA COMMUNICATIONS, INC. - SYSTEMS (2 blocks), HEART OF IOWA VENTURES, L.L.C. - IA (1 block), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IA (1 block), AUREON COMMUNICATIONS, LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is GRUNDY CTR 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.