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

MCMINNVL prefixes in area code 503

NANPA records 13 assigned NXX blocks to rate center MCMINNVL in area code 503, 1.7% 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. 9 holders hold those blocks, the largest being ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER (4), LEVEL 3 COMMUNICATIONS, LLC - OR (2), METROPCS, INC. (1). The earliest assignment on record here is 2008-09-08 and the most recent 2008-09-08. 9 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 931, 971 – overlay codes cover the same geography, so a rate center is served by all of them.

13 assigned blocks – 1.7% of 503
9 holders of record
9 of them pooled in 1,000-number lots

Prefixes assigned here

PrefixHolder of recordAssignedPooledIn service
503-376 Lumen LEVEL 3 COMMUNICATIONS, LLC - OR – yes yes
503-379 Lumen LEVEL 3 COMMUNICATIONS, LLC - OR – no yes
503-434 Ziply Fiber ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER – no yes
503-435 Ziply Fiber ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER – yes yes
503-437 T-Mobile METROPCS, INC. – yes yes
503-472 Ziply Fiber ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER – no yes
503-474 Ziply Fiber ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER – yes yes
503-560 T-Mobile T-MOBILE USA, INC. – yes yes
503-565 Onvoy ONVOY, LLC - OR – yes yes
503-583 Verizon CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR 2008-09-08 yes yes
503-687 PACIFIC WAVE COMMUNICATIONS – no yes
503-857 Lumen LEVEL 3 TELECOM OF OREGON, LLC - OR – yes yes
503-883 Allstream ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM – 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
ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER Ziply Fiber 4 30.8%
LEVEL 3 COMMUNICATIONS, LLC - OR Lumen 2 15.4%
METROPCS, INC. T-Mobile 1 7.7%
T-MOBILE USA, INC. T-Mobile 1 7.7%
ONVOY, LLC - OR Onvoy 1 7.7%
CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR Verizon 1 7.7%
PACIFIC WAVE COMMUNICATIONS – 1 7.7%
LEVEL 3 TELECOM OF OREGON, LLC - OR Lumen 1 7.7%
ELECTRIC LIGHTWAVE LLC DBA ALLSTREAM Allstream 1 7.7%

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 MCMINNVL in area code 503?

13 blocks: 376, 379, 434, 435, 437, 472, 474, 560, 565, 583, 687, 857 and 1 more, all listed in the table above.

Which carriers have numbers in MCMINNVL?

ZIPLY FIBER NORTHWEST, LLC DBA ZIPLY FIBER (4 blocks), LEVEL 3 COMMUNICATIONS, LLC - OR (2 blocks), METROPCS, INC. (1 block), T-MOBILE USA, INC. (1 block), ONVOY, LLC - OR (1 block), CELLCO PARTNERSHIP DBA VERIZON WIRELESS - OR (1 block). These are the holders on record; the carrier actually serving a given number can differ, because numbers move with their owners.

Is MCMINNVL 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 503

All 784 prefixes in 503