Chase, MD — rate center

NANPA rate center & CO code data, current as of July 28, 2026.

State
Maryland
Area codes
410, 443, 667
Active prefixes
13
Carriers
8
Pooled prefixes
12
LATA
238
Metro area
Baltimore-Columbia-Towson, MD MSA

Chase is a telephone rate center in Maryland served by area codes 410, 443, 667. A rate center is the locality the phone industry uses to anchor numbers for billing; every prefix listed below is registered here.

NANPA records show 13 active prefixes here, held by 8 different carriers. Pooling applies to 12 of them — individual thousands-blocks may belong to different companies.

The rate center belongs to the Baltimore-Columbia-Towson, MD Metropolitan Statistical Area. Routing-wise it sits in LATA 238.

Because 410, 443, 667 all serve this territory, two Chase numbers can look completely different while being neighbors — check the prefix, not just the area code.

As always with US numbering: a prefix anchored to Chase tells you where the block was issued. The person calling may have ported the number, moved away, or be spoofing it entirely — verify callers through independently found contact details.

Prefixes anchored to Chase

Prefixes anchored to the Chase rate center
PrefixCode holderPooled
410-335 VERIZON MARYLAND, INC. No
410-344 VERIZON MARYLAND, INC. Yes
410-630 MCIMETRO ACCESS TRANSMISSION SERVICES LLC - MD Yes

FAQ

What area code is Chase, MD?

Chase is served by 3 area codes — 410, 443, 667 — which overlay the same territory.

How many prefixes does Chase have?

13 active NXX prefixes are anchored to this rate center in NANPA records, held by 8 carriers.

Is a call from a Chase prefix really from Chase?

Not necessarily. The prefix marks where the number block was issued; porting, VoIP and spoofing all detach calls from that geography.