Silver Run, MD — rate center
- State
- Maryland
- Active prefixes
- 5
- Carriers
- 5
- Pooled prefixes
- 4
- LATA
- 238
- Metro area
- Baltimore-Columbia-Towson, MD MSA
The Silver Run rate center (Maryland) anchors 5 active prefixes under area codes 410, 443, 667. Rate centers, not city limits, are what phone numbers are legally tied to.
5 central-office prefixes are currently anchored to this rate center across 5 carriers. 4 prefixes participate in thousands-block pooling, so blocks of 1,000 numbers are shared between carriers.
The rate center belongs to the Baltimore-Columbia-Towson, MD Metropolitan Statistical Area. Routing-wise it sits in LATA 238.
Multiple area codes over one rate center (410/443/667) is the overlay pattern: same geography, different first three digits.
With only 5 prefixes, Silver Run sits at the small end of Maryland's rate centers — a handful of carrier blocks cover the whole locality, and a number from here is a fairly strong locality signal (before porting is considered).
Treat this data as geography of the number, not of the caller: porting, VoIP and caller-ID spoofing all detach the two. When a call matters, hang up and call back through an official number.
Prefixes anchored to Silver Run
| Prefix | Code holder | Pooled |
|---|---|---|
| 410-346 | VERIZON MARYLAND, INC. | Yes |
FAQ
What area code is Silver Run, MD?
Silver Run is served by 3 area codes — 410, 443, 667 — which overlay the same territory.
How many prefixes does Silver Run have?
5 active NXX prefixes are anchored to this rate center in NANPA records, held by 5 carriers.
Is a call from a Silver Run prefix really from Silver Run?
Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.