---
title: "Area code 860: Connecticut, United States"
url: "https://lookvalid.com/area-code/860.md"
canonical_url: "https://lookvalid.com/area-code/860"
last_updated: "2026-10-23"
type: "reference"
summary: "Area code 860 serves Connecticut, United States. Number formats, numbering rules, a live phone validator and the other codes in Connecticut."
---

# Area code 860: Connecticut, United States

Area code 860 serves Connecticut, United States. Number formats, numbering rules, a live phone validator and the other codes in Connecticut.

NANPA lists 782 central office codes (prefixes) in use in area code 860, held by 22 holders across 58 rate centers.
Frontier Comm Of CT holds the most prefixes, 325 (42%). 67% of the prefixes are pooled, which means their thousands-blocks can belong to different companies.
The FCC unwanted-call data has 4,631 complaints on file for 3,635 numbers in 860, most often filed as "Unwanted Calls". These are consumer reports, not findings.

## Facts

- In service since: 1995-08-28
- Time zone: Eastern (E)
- Assigned overlays: 959 (2014-08-30)
- Prefixes in use: 782
- Pooled prefixes: 525 (67%)
- Rate centers: 58
- Companies holding prefixes: 22
- Assignment dates on file: 2001-03-26 to 2024-03-12 (103 prefixes)
- ZIP codes in its places: 93

## Rate centers

| Rate center | Prefixes | Share |
| --- | --- | --- |
| HARTFORD | 260 | 33% |
| NEW LONDON | 40 | 5% |
| NORWICH | 35 | 4% |
| MIDDLETOWN | 28 | 4% |
| NEWBRITAIN | 26 | 3% |
| FARMINGTON | 20 | 3% |
| MANCHESTER | 20 | 3% |
| WINDSOR | 20 | 3% |
| 50 other rate centers | 333 | 43% |

## Carriers

| Holder | Prefixes | Share |
| --- | --- | --- |
| Frontier Comm Of CT | 325 | 42% |
| Mcimetro Access Transmission Services | 63 | 8% |
| Verizon Wireless | 60 | 8% |
| Teleport Communications America | 56 | 7% |
| Paetec Itel | 50 | 6% |
| New Cingular Wireless PCS | 44 | 6% |
| 16 other carriers | 184 | 24% |

A prefix holder is the company a code was assigned to, not necessarily a number's current carrier, because numbers can be ported to another company.

## History

- 1947-01-01: Area code 203, named as the parent of 860 in the NANPA report, was in service.
- 1995-08-28: Area code 860 went into service.
- 2014-08-30: Area code 959 went into service as an overlay in the same area as 860.

## Nearest area codes

The area codes closest to 860, measured between the centers of the ZIP code places they serve, are 203 (about 41 miles), 413 (about 41 miles), 475 (about 41 miles), 631 (about 60 miles) and 934 (about 62 miles).

## ZIP codes

93 ZIP codes fall in places that have a rate center in this area code. The places with the most are Hartford, CT (36 ZIP codes), Manchester, CT (4 ZIP codes) and New Britain, CT (4 ZIP codes). A ZIP code and an area code are unrelated systems, so a ZIP code can sit in more than one area code and an area code spans many ZIP codes.

## Complaints on file

4,631 complaints for 3,635 numbers. Numbers whose latest complaint falls in each year:

- 2023: 155
- 2024: 913
- 2025: 219

## Questions

### Where is area code 860?

NANPA assigns area code 860 to Connecticut, United States.

### In which state does area code 860 sit?

Connecticut. 860 is one of 4 area codes the NANPA table assigns to the state.

### Which places does area code 860 cover?

The places with the most ZIP codes among the rate centers in 860 are Hartford, CT, Manchester, CT and New Britain, CT. The rate center list on this page shows all of them.

### Who owns area code 860?

NANPA assigns area codes. Within 860, Frontier Comm Of CT holds the most prefixes, 325 prefixes or 42%.

### Which time zone does 860 use?

The NANPA NPA report lists the time zone for 860 as Eastern (E).

### What year did 860 enter service?

The NANPA NPA report gives an in-service date of 1995-08-28, so 860 has been in use since 1995.

### Does area code 860 have an overlay?

Yes. 959 (in service 2014-08-30) shares the same area with 860, so numbers from all of them are local to each other.

### Which area codes are nearest to 860?

The area codes closest to 860, measured between the centers of the ZIP code places they serve, are 203 (about 41 miles), 413 (about 41 miles), 475 (about 41 miles), 631 (about 60 miles) and 934 (about 62 miles).

### How many prefixes does area code 860 have?

NANPA's report dated 2026-10-17 lists 782 prefixes in service in 860, spread over 58 rate centers and 22 holders.

### Are there complaints about 860 numbers?

The FCC data on file has 4,631 complaints for 3,635 numbers in 860. They are unverified consumer reports. A number with no complaints on file is not proven safe.

Sources: NANPA central office code report dated 2026-10-17; NANPA NPA report dated 2026-10-18; FCC unwanted-call complaints, data fetched 2026-10-17; ZIP code places from GeoNames (CC BY 4.0).