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

WINDERMERE prefixes in area code 407

NANPA records 6 assigned NXX blocks to rate center WINDERMERE in area code 407, 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. 5 holders hold those blocks, the largest being CENTURYLINK OF FLORIDA, INC. (UNITED) (2), LEVEL 3 TELECOM OF FLORIDA, LP - FL (1), ORLANDO TELEPHONE COMPANY DBA SUMMIT BROADBAND (1). 5 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 code 689 – overlay codes cover the same geography, so a rate center is served by all of them.

6 assigned blocks – 0.8% of 407
5 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
407-217 Lumen LEVEL 3 TELECOM OF FLORIDA, LP - FL – yes yes
407-258 ORLANDO TELEPHONE COMPANY DBA SUMMIT BROADBAND – yes yes
407-605 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - FL – yes yes
407-612 MCI WORLDCOM COMMUNICATIONS, INC. - FL – yes yes
407-876 Lumen CENTURYLINK OF FLORIDA, INC. (UNITED) – no yes
407-909 Lumen CENTURYLINK OF FLORIDA, INC. (UNITED) – 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
CENTURYLINK OF FLORIDA, INC. (UNITED) Lumen 2 33.3%
LEVEL 3 TELECOM OF FLORIDA, LP - FL Lumen 1 16.7%
ORLANDO TELEPHONE COMPANY DBA SUMMIT BROADBAND – 1 16.7%
TELEPORT COMMUNICATIONS AMERICA, LLC - FL AT&T 1 16.7%
MCI WORLDCOM COMMUNICATIONS, INC. - FL – 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 WINDERMERE in area code 407?

6 blocks: 217, 258, 605, 612, 876, 909. The table above gives the holder of each.

Which carriers have numbers in WINDERMERE?

CENTURYLINK OF FLORIDA, INC. (UNITED) (2 blocks), LEVEL 3 TELECOM OF FLORIDA, LP - FL (1 block), ORLANDO TELEPHONE COMPANY DBA SUMMIT BROADBAND (1 block), TELEPORT COMMUNICATIONS AMERICA, LLC - FL (1 block), MCI WORLDCOM COMMUNICATIONS, INC. - FL (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is WINDERMERE 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 407

All 786 prefixes in 407