Area Code Detail

Area Code 748

Northern and Western Colorado · In service since 2026

CO
Reports, 30 Days 0

Recent FCC and FTC complaint records tied to this area code.

Reports, 180 Days 5

Broader complaint volume used to prioritize indexable pages.

Active Prefixes 14

Distinct NPA-NXX prefixes surfaced from routing and assignment data.

Carriers / Assignees 1

Named carriers, assignees, or code holders found in routing data.

Cities / Rate Centers 0

Distinct cities or rate centers attached to this area code.

States / Territories 1

Coverage footprint visible from NANPA, pooled block, and Canada routing data.

North American Phone Intelligence

Search a phone number, area code, exchange, or short code

Paste raw digits, a formatted phone number, an area code, an NPA-NXX block, or a short code. US and Canada phone lookups route automatically, and international iMessage checks are available separately.

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Overview

What this area code covers

Northern and Western Colorado

overlaid on 970

Top carriers and assignees

  • MULTIPLE OCN LISTING · 14 routing rows
NPA-NXX

Prefix directory inside area code 748

Each prefix below is collapsed to one primary locality row so you can scan the area code by prefix without the duplicated block-level assignment rows.

Prefix Primary Rate Center Primary City State
748-211-XXXX XXXXXXXXXX CO
748-311-XXXX XXXXXXXXXX CO
748-411-XXXX XXXXXXXXXX CO
748-511-XXXX XXXXXXXXXX CO
748-555-XXXX DIR ASST CO
748-611-XXXX XXXXXXXXXX CO
748-700-XXXX XXXXXXXXXX CO
748-711-XXXX XXXXXXXXXX CO
748-811-XXXX XXXXXXXXXX CO
748-911-XXXX XXXXXXXXXX CO
748-950-XXXX XXXXXXXXXX CO
748-958-XXXX XXXXXXXXXX CO
748-959-XXXX XXXXXXXXXX CO
748-976-XXXX XXXXXXXXXX CO
Recent Signals

Latest complaint activity tied to 748

Complaint pages are the strongest indexing opportunity for this site right now, especially for exact phone numbers and toll-free exchanges.

FTC report from Rocky Mount, VIRGINIA

May 11, 2026 at 7:39 PM

This report was logged as a live voice. Violation date: May 11, 2026 at 11:32 AM.

FTC report from Palisade, COLORADO

March 26, 2026 at 7:09 PM

This report was logged as a robocall. Violation date: March 26, 2026 at 12:36 PM.

FTC report from Wexford, PENNSYLVANIA

February 22, 2026 at 12:02 PM

This report was logged as a live voice. Category: Dropped call or no message. Violation date: February 21, 2026 at 2:51 PM.

FTC report from Colorado Springs, COLORADO

February 4, 2026 at 10:36 PM

This report was logged as a live voice. Category: Dropped call or no message. Violation date: February 4, 2026 at 12:56 PM.

FTC report from Wexford, PENNSYLVANIA

February 4, 2026 at 11:03 AM

This report was logged as a live voice. Violation date: February 2, 2026 at 11:47 AM.

FTC report from South Holland, ILLINOIS

December 8, 2025 at 6:00 PM

This report was logged as a robocall. Violation date: December 1, 2025 at 4:52 PM.

FTC report from VIRGINIA

November 25, 2025 at 4:32 PM

748-224-2001 was logged as a live voice. Violation date: January 16, 2025 at 12:00 AM.

FTC report from Pamplico, SOUTH CAROLINA

November 20, 2025 at 8:11 AM

This report was logged as a live voice. Violation date: November 19, 2025 at 5:00 PM.

FTC report from Pamplico, SOUTH CAROLINA

November 20, 2025 at 8:08 AM

This report was logged as a live voice. Violation date: November 19, 2025 at 1:00 PM.

FTC report from New Port Richey, FLORIDA

September 27, 2025 at 5:45 PM

748-562-1208 was logged as a robocall. Violation date: September 26, 2025 at 10:48 AM.

FTC report from New Port Richey, FLORIDA

September 26, 2025 at 1:11 PM

748-562-1208 was logged as a robocall. Violation date: September 26, 2025 at 9:08 AM.

FTC report from Waterford, OHIO

September 19, 2025 at 9:53 AM

748-999-2078 was logged as a unwanted call. Category: Dropped call or no message. Violation date: September 16, 2025 at 7:22 PM.

FTC report from Waterford, OHIO

September 19, 2025 at 9:51 AM

748-452-3230 was logged as a unwanted call. Category: Dropped call or no message. Violation date: September 16, 2025 at 10:23 AM.

FTC report from CALIFORNIA

August 13, 2025 at 7:49 PM

This report was logged as a robocall. Category: Dropped call or no message. Violation date: August 13, 2025 at 10:44 AM.

FTC report from OHIO

July 11, 2025 at 11:20 AM

This report was logged as a live voice. Category: Dropped call or no message. Violation date: July 10, 2025 at 6:18 PM.

FTC report from Charlotte, NORTH CAROLINA

July 9, 2025 at 11:39 AM

This report was logged as a robocall. Category: Medical & prescriptions. Violation date: July 9, 2025 at 11:36 AM.

FTC report from COLORADO

July 6, 2025 at 10:04 PM

748-772-9711 was logged as a robocall. Category: No Subject Provided. Violation date: July 3, 2025 at 12:00 AM.

FTC report from COLORADO

July 6, 2025 at 10:04 PM

748-772-9722 was logged as a robocall. Category: No Subject Provided. Violation date: July 1, 2025 at 12:00 AM.

FTC report from San Pedro, CALIFORNIA

July 5, 2025 at 6:17 PM

This report was logged as a robocall. Category: Calls pretending to be government, businesses, or family and friends. Violation date: July 2, 2025 at 9:16 AM.

FTC report from Fullerton, CALIFORNIA

July 2, 2025 at 6:22 PM

748-584-1818 was logged as a live voice. Violation date: July 2, 2025 at 9:48 AM.

FTC report from Dublin, OHIO

May 2, 2025 at 11:48 AM

748-627-9100 was logged as a robocall. Violation date: April 30, 2025 at 6:11 PM.

FTC report from Mesa,az, ARIZONA

April 23, 2025 at 7:43 PM

This report was logged as a unwanted call. Violation date: April 23, 2025 at 4:32 PM.

FTC report from MINNESOTA

March 31, 2025 at 5:37 PM

748-481-8008 was logged as a robocall. Violation date: March 31, 2025 at 4:00 PM.

FTC report from Monroeville, NEW JERSEY

March 10, 2025 at 7:12 PM

This report was logged as a robocall. Violation date: March 10, 2025 at 5:27 PM.

FTC report from MISSOURI

March 4, 2025 at 11:40 AM

748-208-2841 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: March 4, 2025 at 9:55 AM.

FTC report from Toms River, NEW JERSEY

October 3, 2024 at 4:55 PM

748-249-1094 was logged as a robocall. Category: Dropped call or no message. Violation date: October 3, 2024 at 4:53 PM.

FTC report from Harwinton, CONNECTICUT

September 10, 2024 at 4:22 PM

This report was logged as a live voice. Violation date: September 5, 2024 at 6:22 PM.

FTC report from Waterloo, NEW YORK

August 28, 2024 at 12:04 PM

748-336-8480 was logged as a live voice. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: August 28, 2024 at 11:26 AM.

FTC report from Tacoma, WASHINGTON

August 23, 2024 at 6:04 PM

This report was logged as a robocall. Violation date: August 23, 2024 at 2:38 PM.

FTC report from West Liberty, KENTUCKY

August 21, 2024 at 10:45 AM

This report was logged as a live voice. Violation date: August 16, 2024 at 9:12 AM.

FTC report from NEW JERSEY

August 12, 2024 at 8:50 PM

748-368-6250 was logged as a robocall. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: August 12, 2024 at 2:00 PM.

FTC report from PENNSYLVANIA

July 5, 2024 at 11:12 AM

748-529-3511 was logged as a live voice. Category: Calls pretending to be government, businesses, or family and friends. Violation date: July 2, 2024 at 2:23 PM.

FTC report from Bangalore, INDIANA

June 11, 2024 at 1:57 PM

748-371-6522 was logged as a robocall. Violation date: June 11, 2024 at 9:30 AM.

FTC report from VIRGINIA

June 3, 2024 at 2:51 PM

This report was logged as a robocall. Violation date: June 3, 2024 at 2:42 PM.

FTC report from Elmhurst, NEW YORK

May 29, 2024 at 7:51 PM

748-997-1400 was logged as a live voice. Violation date: May 28, 2024 at 3:21 PM.

FTC report from South Vienna, OHIO

May 6, 2024 at 8:44 PM

This report was logged as a unwanted call. Category: Dropped call or no message. Violation date: May 6, 2024 at 11:43 AM.

FTC report from MISSOURI

January 22, 2024 at 4:47 PM

748-729-5565 was logged as a live voice. Category: Reducing your debt (credit cards, mortgage, student loans). Violation date: January 22, 2024 at 3:22 AM.

FTC report from Southlake, TEXAS

December 1, 2023 at 9:52 PM

748-481-2121 was logged as a live voice. Violation date: December 1, 2023 at 11:42 AM.

FTC report from Richmond, TEXAS

November 26, 2023 at 10:33 AM

This report was logged as a robocall. Category: No Subject Provided. Violation date: November 25, 2023 at 11:48 PM.

FTC report from Lafayette, CALIFORNIA

November 22, 2023 at 6:41 PM

748-934-1439 was logged as a robocall. Violation date: November 22, 2023 at 12:10 PM.