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Before You Call Back

Area code 670

Area code 670 serves Northern Mariana Islands, including Saipan, Rota and Tinian ((UTC+10) time). It has been in service since July 1, 1997.

Numbers starting with 670 drew 6 reports to the FTC from Aug 14, 2026 to Nov 11, 2026 and 1 complaint to the FCC since November 2023. The number on your screen can be faked, so a 670 number proves nothing about where a call came from.

Location
Northern Mariana Islands
Time zone
(UTC+10)
In service since
July 1, 1997
Overlay
None: the only code for its area
Local calls
Dial 7 digits
Exchanges in use
35 of 792held by 3 carriers

Complaints about 670 numbers

Reports where the number on the consumer's caller ID (or, for the FCC, the number the caller asked them to call back) starts with 670. These are counts of what people reported; the agencies do not verify them.

FTC reports, Aug 14, 2026 to Nov 11, 2026

6

FCC complaints since November 2023

1

Different 670 numbers reported

7

FCC complaints naming a 670 number, by month

November 2023 to October 2026. Source: FCC Consumer Complaints Data.

Show as a table
MonthComplaints
November 20230
December 20230
January 20240
February 20240
March 20240
April 20240
May 20240
June 20240
July 20240
August 20240
September 20240
October 20240
November 20240
December 20240
January 20250
February 20250
March 20250
April 20250
May 20250
June 20250
July 20251
August 20250
September 20250
October 20250
November 20250
December 20250
January 20260
February 20260
March 20260
April 20260
May 20260
June 20260
July 20260
August 20260
September 20260
October 20260

What people said 670 calls were about

Subjects picked in FTC reports, August 14, 2026 to November 11, 2026. 4 of 6 reports were robocalls.

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SubjectReports
Other2
Calls pretending to be government, businesses, or family and friends2
Reducing your debt (credit cards, mortgage, student loans)1

Places served by 670

NANPA lists 3 rate centers for 670. A rate center is the town or district a block of numbers is tied to for billing; sorted here by how many exchanges each holds.
  • Saipan31
  • Rota2
  • Tinian2

Phone companies holding 670 exchanges

Each exchange (the three digits after the area code) is assigned to one carrier. 0% of these exchanges are pooled: their numbers are handed out in blocks of 1,000 to other carriers, so the holder below is not always the company serving a given number.

Exchanges held, top 3 of 3 carriers

NANPA central office code assignments, file of November 11, 2026.

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Carrier (legal name)Exchanges
Micronesian Telecommunications Corporation15
Pti Pacifica Inc.15
Guam Wireless Telephone Company, LLC5

When today's 670 exchanges were assigned

Exchanges still assigned, by year of assignment. Exchanges returned since are not counted.

Show as a table
YearExchanges
20022
20031
20044
20054
20071
20082
20101
20131
20181

Check a 670 number

A check shows the carrier and rate center of the number's exchange and every FTC and FCC report about that exact number. Why the number on screen can be fake.

NANPA area code database and central office code file of November 11, 2026; FCC complaints November 1, 2023 to November 11, 2026; FTC reports August 14, 2026 to November 11, 2026. How the data is used.

Official sources (7)Show