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

INVERNESS prefixes in area code 415

NANPA records 5 assigned NXX blocks to rate center INVERNESS in area code 415, 0.6% of the 785 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 ONVOY, LLC - CA (2), TELEPORT COMMUNICATIONS AMERICA, LLC - CA (1), LEVEL 3 COMMUNICATIONS, LLC - CA (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 codes 352, 628, 662 – overlay codes cover the same geography, so a rate center is served by all of them.

5 assigned blocks – 0.6% of 415
4 holders of record
5 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
415-236 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CA – yes yes
415-237 Lumen LEVEL 3 COMMUNICATIONS, LLC - CA – yes yes
415-639 Onvoy ONVOY, LLC - CA – yes yes
415-669 AT&T PACIFIC BELL – yes yes
415-727 Onvoy ONVOY, LLC - CA – 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
ONVOY, LLC - CA Onvoy 2 40%
TELEPORT COMMUNICATIONS AMERICA, LLC - CA AT&T 1 20%
LEVEL 3 COMMUNICATIONS, LLC - CA Lumen 1 20%
PACIFIC BELL AT&T 1 20%

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 INVERNESS in area code 415?

5 blocks: 236, 237, 639, 669, 727. The table above gives the holder of each.

Which carriers have numbers in INVERNESS?

ONVOY, LLC - CA (2 blocks), TELEPORT COMMUNICATIONS AMERICA, LLC - CA (1 block), LEVEL 3 COMMUNICATIONS, LLC - CA (1 block), PACIFIC BELL (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is INVERNESS 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 415

All 785 prefixes in 415