NumberingData
Verified Nov 1, 2026 · Source: NANPA CO Code Assignment Records

HAGERSTOWN prefixes in area code 301

NANPA records 21 assigned NXX blocks to rate center HAGERSTOWN in area code 301, 2.7% of the 784 blocks assigned in the code. A rate center is the billing geography a block is allocated to – NANPA truncates the name to ten characters, so read it as a NANPA label rather than a town. 7 holders hold those blocks, the largest being VERIZON MARYLAND, INC. (11), METROPCS, INC. (3), USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD (2). The earliest assignment on record here is 2004-10-05 and the most recent 2017-06-02. 14 of them are in thousands-block pooling, so those prefixes are shared between carriers in 1,000-number lots. The same rate center name also appears in area codes 227, 240, 765 – overlay codes cover the same geography, so a rate center is served by all of them.

21 assigned blocks – 2.7% of 301
7 holders of record
14 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
301-302 T-Mobile METROPCS, INC. 2004-10-05 yes yes
301-331 AT&T NEW CINGULAR WIRELESS PCS, LLC - DC – yes yes
301-393 Verizon VERIZON MARYLAND, INC. – yes yes
301-491 UScellular USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD – yes yes
301-573 T-Mobile METROPCS, INC. – yes yes
301-582 Verizon VERIZON MARYLAND, INC. – yes yes
301-665 Verizon VERIZON MARYLAND, INC. – yes yes
301-671 Bandwidth BANDWIDTH.COM CLEC, LLC - MD – no yes
301-714 Verizon VERIZON MARYLAND, INC. – yes yes
301-733 Verizon VERIZON MARYLAND, INC. – no yes
301-739 Verizon VERIZON MARYLAND, INC. – no yes
301-745 Verizon VERIZON MARYLAND, INC. – yes yes
301-766 Verizon VERIZON MARYLAND, INC. – no yes
301-790 Verizon VERIZON MARYLAND, INC. – no yes
301-791 Verizon VERIZON MARYLAND, INC. – no yes
301-797 Verizon VERIZON MARYLAND, INC. – no yes
301-800 T-Mobile OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC – yes yes
301-936 Telnyx TELNYX LLC 2017-06-02 yes yes
301-988 UScellular USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD – yes yes
301-991 T-Mobile OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC – yes yes
301-992 T-Mobile METROPCS, INC. – yes yes

The holder is who received the block from the numbering administrator. It is not necessarily the carrier serving a given number: numbers move with their owners, and a pooled block is shared.

Who holds the blocks

HolderBrandBlocksShare here
VERIZON MARYLAND, INC. Verizon 11 52.4%
METROPCS, INC. T-Mobile 3 14.3%
USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD UScellular 2 9.5%
OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC T-Mobile 2 9.5%
NEW CINGULAR WIRELESS PCS, LLC - DC AT&T 1 4.8%
BANDWIDTH.COM CLEC, LLC - MD Bandwidth 1 4.8%
TELNYX LLC Telnyx 1 4.8%

Same rate center in other codes

Overlay codes cover the same geography, so one rate center is served by all of them.

Frequently asked

Which prefixes belong to HAGERSTOWN in area code 301?

21 blocks: 302, 331, 393, 491, 573, 582, 665, 671, 714, 733, 739, 745 and 9 more, all listed in the table above.

Which carriers have numbers in HAGERSTOWN?

VERIZON MARYLAND, INC. (11 blocks), METROPCS, INC. (3 blocks), USCOC OF CUMBERLAND, INC. DBA UNITED STATES CEL MD (2 blocks), OMNIPOINT COMMUNICATIONS CAP OPERATIONS, LLC (2 blocks), NEW CINGULAR WIRELESS PCS, LLC - DC (1 block), BANDWIDTH.COM CLEC, LLC - MD (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is HAGERSTOWN a city?

It is a rate center – the unit NANPA allocates number blocks to. Its name is abbreviated to ten characters and is not necessarily a settlement: we print it as recorded rather than guess at the full name.

Other rate centers in 301

All 784 prefixes in 301