─────── § 04. NPA RECORD · 521 · FOLIO 0323 OF 0801 ──────────────
521
United States NPA Record
Non-geographic personal communications service area code activated in September 2017 in the United States for machine-to-machine communication.
Non-geographic personal communications service area code activated in September 2017 in the United States for machine-to-machine communication.
IN SERVICEFirst record · 2017
§ 04.05Event Summary
activated · 3introduced · 1
§ 04.06
Documentary Record · 4 events
CHRONOLOGICAL ORDER
2017-03-24
activated
NPA 521 assigned
Assignment of NPA 521 for Non-Geographic Services
▸
2017-09-12
activated
Activation of area code 521 for non-geographic personal communications and machine-to-machine services
▸
2017-09-12
introduced
NPA 521 activated for personal communications services
▸
2017-09-21
activated
NPA 521 assigned
Assignment of NPA 521 for Non-Geographic Services.
▸