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

DANIELSON prefixes in area code 860

NANPA records 5 assigned NXX blocks to rate center DANIELSON in area code 860, 0.6% of the 783 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. 3 holders hold those blocks, the largest being SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT (3), ONVOY, LLC - CT (1), TELEPORT COMMUNICATIONS AMERICA, LLC - CT (1). The earliest assignment on record here is 2024-03-12 and the most recent 2024-03-12. 3 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 959 – overlay codes cover the same geography, so a rate center is served by all of them.

5 assigned blocks – 0.6% of 860
3 holders of record
3 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
860-401 Onvoy ONVOY, LLC - CT 2024-03-12 yes yes
860-412 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CT – yes yes
860-774 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – no yes
860-779 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – no yes
860-932 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – 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
SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT AT&T 3 60%
ONVOY, LLC - CT Onvoy 1 20%
TELEPORT COMMUNICATIONS AMERICA, LLC - CT AT&T 1 20%

Frequently asked

Which prefixes belong to DANIELSON in area code 860?

5 blocks: 401, 412, 774, 779, 932. The table above gives the holder of each.

Which carriers have numbers in DANIELSON?

SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT (3 blocks), ONVOY, LLC - CT (1 block), TELEPORT COMMUNICATIONS AMERICA, LLC - CT (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is DANIELSON 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 860

All 783 prefixes in 860