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

LA GRANGE prefixes in area code 815

NANPA records 6 assigned NXX blocks to rate center LA GRANGE in area code 815, 0.8% of the 786 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 SPOK, INC. (2), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL (2), INDIANA PAGING NETWORK, INC. (1). The earliest assignment on record here is 2001-04-16 and the most recent 2001-04-16. The same rate center name also appears in area codes 252, 307, 312, 464 – overlay codes cover the same geography, so a rate center is served by all of them.

6 assigned blocks – 0.8% of 815
4 holders of record
0 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
815-294 Spok SPOK, INC. – no yes
815-481 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL – no yes
815-488 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL – no yes
815-533 INDIANA PAGING NETWORK, INC. – no yes
815-536 Spok SPOK, INC. – no yes
815-767 American Messaging AMERICAN MESSAGING SERVICES, LLC 2001-04-16 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
SPOK, INC. Spok 2 33.3%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL Verizon 2 33.3%
INDIANA PAGING NETWORK, INC. – 1 16.7%
AMERICAN MESSAGING SERVICES, LLC American Messaging 1 16.7%

Same rate center in other codes

Overlay codes cover the same geography, so one rate center is served by all of them.

Frequently asked

Which prefixes belong to LA GRANGE in area code 815?

6 blocks: 294, 481, 488, 533, 536, 767. The table above gives the holder of each.

Which carriers have numbers in LA GRANGE?

SPOK, INC. (2 blocks), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - IL (2 blocks), INDIANA PAGING NETWORK, INC. (1 block), AMERICAN MESSAGING SERVICES, 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 LA GRANGE 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 815

All 786 prefixes in 815