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

DUNDEE prefixes in area code 847

NANPA records 13 assigned NXX blocks to rate center DUNDEE in area code 847, 1.7% 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 ILLINOIS BELL TEL CO (9), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (2), LEVEL 3 COMMUNICATIONS, LLC - IL (1). The earliest assignment on record here is 2009-09-02 and the most recent 2009-09-02. 8 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 224, 507, 607, 734 – overlay codes cover the same geography, so a rate center is served by all of them.

13 assigned blocks – 1.7% of 847
4 holders of record
8 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
847-286 AT&T ILLINOIS BELL TEL CO – no yes
847-396 AT&T ILLINOIS BELL TEL CO 2009-09-02 yes yes
847-426 AT&T ILLINOIS BELL TEL CO – no yes
847-428 AT&T ILLINOIS BELL TEL CO – no yes
847-551 AT&T ILLINOIS BELL TEL CO – yes yes
847-586 Lumen LEVEL 3 COMMUNICATIONS, LLC - IL – yes yes
847-645 AT&T ILLINOIS BELL TEL CO – yes yes
847-649 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
847-747 AT&T ILLINOIS BELL TEL CO – no yes
847-783 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
847-836 AT&T ILLINOIS BELL TEL CO – no yes
847-844 AT&T ILLINOIS BELL TEL CO – yes yes
847-851 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - IL – 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

HolderBrandBlocksShare here
ILLINOIS BELL TEL CO AT&T 9 69.2%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 2 15.4%
LEVEL 3 COMMUNICATIONS, LLC - IL Lumen 1 7.7%
TELEPORT COMMUNICATIONS AMERICA, LLC - IL AT&T 1 7.7%

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 DUNDEE in area code 847?

13 blocks: 286, 396, 426, 428, 551, 586, 645, 649, 747, 783, 836, 844 and 1 more, all listed in the table above.

Which carriers have numbers in DUNDEE?

ILLINOIS BELL TEL CO (9 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (2 blocks), LEVEL 3 COMMUNICATIONS, LLC - IL (1 block), TELEPORT COMMUNICATIONS AMERICA, LLC - 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 DUNDEE 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 847

All 786 prefixes in 847