Area code
Area code 410 — Baltimore, MD
Maryland · in service since October 6, 1991
Area code 410 covers Baltimore, MD. It is an overlay: 443, 667 serve the same area, so neighbors can have different area codes.
Local time in Baltimore
Spam reports from Sep 23 – Oct 22, 2026
Average #164 of 461 codes
561 FTC complaints
Consumer reports, not verified by the FTC.
See the reports- Time zoneEastern Time
- Local calls10 digits
- Prefixes800 assigned
- Runs out~1Q 2036
- Unwanted call?Block & report
Spam call reports about 410 numbers
Complaints by week
Sep 11 – Oct 22, 2026Show as table
| Week starting | Complaints |
|---|---|
| Sep 7 (3 days) | 22 |
| Sep 14 | 125 |
| Sep 21 | 127 |
| Sep 28 | 127 |
| Oct 5 | 95 |
| Oct 12 | 103 |
| Oct 19 (4 days) | 141 |
Compared with all codes
- Robocalls
- 77%all codes 75%
- Callers with the same code
- 64%all codes 35%
- Rank by complaints
- #164of 461 · middle half
- FCC complaints, Oct 2025 – Sep 2026
- 12838 about text messages
What the calls were about
Sep 11 – Oct 22, 2026
| Subject | Complaints | |
|---|---|---|
| Dropped call or no message | 145 20% | |
| Reducing your debt (credit cards, mortgage, student loans) | 84 11% | |
| Calls pretending to be government, businesses, or family and friends | 51 7% | |
| Home improvement & cleaning | 35 5% | |
| Medical & prescriptions | 33 4% | |
| Warranties & protection plans | 21 3% |
Where the people who complained live
Sep 11 – Oct 22, 2026
| State | Complaints | |
|---|---|---|
| Maryland | 576 78% | |
| Virginia | 14 2% | |
| Ohio | 13 2% | |
| Texas | 13 2% | |
| California | 12 2% |
October 2026 (partial) report · most reported
Consumer reports, not verified by the FTC · source
Source: FTC Do Not Call complaints created Sep 11 – Oct 22, 2026. They are reported by consumers and are not verified by the FTC; caller ID can be spoofed (how we count).
Source: FCC Consumer Complaints data, unwanted calls filed Oct 1, 2025 – Sep 30, 2026, by caller ID; not verified by the FCC.
Area code 410 location and prefixes
| Exchange (NANPA) | Place | County | Prefixes |
|---|---|---|---|
| BALTIMORE | Baltimore | Baltimore city | 193 |
| TOWSON | Towson | Baltimore County | 53 |
| ANNAPOLIS | Annapolis | Anne Arundel County | 36 |
| CATONSVL | Catonsville | Baltimore County | 35 |
| GLENBURNIE | Glen Burnie | Anne Arundel County | 29 |
| SALISBURY | Salisbury | Wicomico County | 24 |
| WATERLO236 | — | — | 23 |
| COLUMBIA | Columbia | Howard County | 20 |
| ELKRIDGE | Elkridge | Howard County | 20 |
| PIKESVILLE | Pikesville | Baltimore County | 19 |
Plus 92 smaller exchange areas.
Source: NANPA CO codes of Oct 23, 2026; places: U.S. Census Bureau, matched by DialWhere (how).
Is 410 running out of numbers?
Previous forecast (October 2025): 2035, moved later by 1 year.
Forecast exhaust year by edition
Source: NANPA NRUF forecast, April 2026 edition.
Who holds 410 prefixes
The five largest of 28 original holders
As listed by NANPA, not today’s carrier.
| Holder (as listed) | Prefixes | |
|---|---|---|
| Verizon Maryland, Inc. | 510 64% | |
| Verizon Wireless | 53 7% | |
| New Cingular Wireless PCS, LLC | 51 6% | |
| Mcimetro Access Transmission Services LLC | 47 6% | |
| Spok, Inc. | 28 4% |
Source: NANPA CO codes of Oct 23, 2026.
Questions about area code 410
What area code is 410?
A Maryland area code, in service since October 6, 1991.
Where is 410 area code, and what time zone is it in?
Baltimore, MD; Eastern Time.
Why am I getting spam calls from 410?
561 FTC complaints from Sep 23 – Oct 22, 2026, most often about dropped calls or no message (not verified by the FTC; caller ID can be spoofed).
Will 410 get a new area code?
NANPA forecasts exhaust in 1Q 2036; no relief planning listed.