LOCKPORT prefixes in area code 815
NANPA records 18 assigned NXX blocks to rate center LOCKPORT in area code 815, 2.3% 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. 7 holders hold those blocks, the largest being ILLINOIS BELL TEL CO (9), LEVEL 3 COMMUNICATIONS, LLC - IL (3), TELEPORT COMMUNICATIONS AMERICA, LLC - IL (2). The earliest assignment on record here is 2001-04-10 and the most recent 2022-08-19. 14 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area codes 716, 779, 985 – overlay codes cover the same geography, so a rate center is served by all of them.
Prefixes assigned here
| Prefix | Holder of record | Assigned | Pooled | In service |
|---|---|---|---|---|
| 815-221 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - IL | – | yes | yes |
| 815-293 | AT&T ILLINOIS BELL TEL CO | – | yes | yes |
| 815-306 | Lumen LEVEL 3 COMMUNICATIONS, LLC - IL | – | yes | yes |
| 815-328 | Lumen LEVEL 3 COMMUNICATIONS, LLC - IL | – | yes | yes |
| 815-372 | AT&T ILLINOIS BELL TEL CO | – | yes | yes |
| 815-407 | AT&T ILLINOIS BELL TEL CO | – | yes | yes |
| 815-461 | Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | – | no | yes |
| 815-512 | FIRST COMMUNICATIONS, LLC | – | no | yes |
| 815-524 | AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - IL | – | yes | yes |
| 815-552 | AT&T ILLINOIS BELL TEL CO | 2001-04-10 | yes | yes |
| 815-588 | AT&T ILLINOIS BELL TEL CO | – | yes | yes |
| 815-660 | RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | – | yes | yes |
| 815-749 | Bandwidth BANDWIDTH.COM CLEC, LLC - IL | 2022-08-19 | yes | yes |
| 815-834 | AT&T ILLINOIS BELL TEL CO | – | yes | yes |
| 815-836 | AT&T ILLINOIS BELL TEL CO | – | yes | yes |
| 815-838 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 815-886 | AT&T ILLINOIS BELL TEL CO | – | no | yes |
| 815-905 | Lumen LEVEL 3 COMMUNICATIONS, LLC - IL | 2002-02-27 | 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 |
|---|---|---|---|
| ILLINOIS BELL TEL CO | AT&T | 9 | 50% |
| LEVEL 3 COMMUNICATIONS, LLC - IL | Lumen | 3 | 16.7% |
| TELEPORT COMMUNICATIONS AMERICA, LLC - IL | AT&T | 2 | 11.1% |
| MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL | Verizon | 1 | 5.6% |
| FIRST COMMUNICATIONS, LLC | – | 1 | 5.6% |
| RCN TELECOM SERVICES OF ILLINIOS, INC. - IL | – | 1 | 5.6% |
| BANDWIDTH.COM CLEC, LLC - IL | Bandwidth | 1 | 5.6% |
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 LOCKPORT in area code 815?
18 blocks: 221, 293, 306, 328, 372, 407, 461, 512, 524, 552, 588, 660 and 6 more, all listed in the table above.
Which carriers have numbers in LOCKPORT?
ILLINOIS BELL TEL CO (9 blocks), LEVEL 3 COMMUNICATIONS, LLC - IL (3 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - IL (2 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC - IL (1 block), FIRST COMMUNICATIONS, LLC (1 block), RCN TELECOM SERVICES OF ILLINIOS, INC. - IL (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.
Is LOCKPORT 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.