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

PUTNAM prefixes in area code 860

NANPA records 11 assigned NXX blocks to rate center PUTNAM in area code 860, 1.4% 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. 7 holders hold those blocks, the largest being SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT (4), NEW CINGULAR WIRELESS PCS, LLC - DC (2), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (1). 10 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 325, 518, 580, 815 – overlay codes cover the same geography, so a rate center is served by all of them.

11 assigned blocks – 1.4% of 860
7 holders of record
10 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
860-315 Verizon MCIMETRO ACCESS TRANSMISSION SERVICES LLC – yes yes
860-382 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC – yes yes
860-481 Lumen LEVEL 3 COMMUNICATIONS, LLC - CT – yes yes
860-630 AT&T TELEPORT COMMUNICATIONS AMERICA, LLC - CT – yes yes
860-753 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC – yes yes
860-792 Comcast COMCAST IP PHONE, LLC – yes yes
860-821 Windstream PAETEC ITEL, LLC – yes yes
860-923 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – yes yes
860-928 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – no yes
860-963 AT&T SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT – yes yes
860-974 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 4 36.4%
NEW CINGULAR WIRELESS PCS, LLC - DC AT&T 2 18.2%
MCIMETRO ACCESS TRANSMISSION SERVICES LLC Verizon 1 9.1%
LEVEL 3 COMMUNICATIONS, LLC - CT Lumen 1 9.1%
TELEPORT COMMUNICATIONS AMERICA, LLC - CT AT&T 1 9.1%
COMCAST IP PHONE, LLC Comcast 1 9.1%
PAETEC ITEL, LLC Windstream 1 9.1%

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 PUTNAM in area code 860?

11 blocks: 315, 382, 481, 630, 753, 792, 821, 923, 928, 963, 974. The table above gives the holder of each.

Which carriers have numbers in PUTNAM?

SOUTHERN NEW ENGLAND TELCO DBA FRONTIER COMM OF CT (4 blocks), NEW CINGULAR WIRELESS PCS, LLC - DC (2 blocks), MCIMETRO ACCESS TRANSMISSION SERVICES LLC (1 block), LEVEL 3 COMMUNICATIONS, LLC - CT (1 block), TELEPORT COMMUNICATIONS AMERICA, LLC - CT (1 block), COMCAST IP PHONE, LLC (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is PUTNAM 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