Public regulatory phone

(800) 322-3223

Associations below come from public FCC regulatory records. Confidence describes the source relationship, not current ownership of the number.

Company or contact	FRN	System	Source record	Confidence	Observed
NATIONAL GRID USA SERVICE CO, INC. owner	0003628997	ASR	9c13bd1a2430f3b0f36eab856b664714519e231407a155bd88e1d6ee94147157	Authoritative identifier (100.0%)	2026-08-09 21:48:48
NATIONAL GRID USA SERVICE CO, INC. owner	0003628997	ASR	9a350f9ba7df75800eb34df272fd0b50a8add420dd5824b73ecaceb2633cfa6b	Authoritative identifier (100.0%)	2026-08-09 10:48:45
NATIONAL GRID USA SERVICE CO, INC. owner	0003628997	ASR	95f625efb5cfaee48cd92ca5d3690e8a1a3582d21296b3f2c8fa3db821765a4a	Authoritative identifier (100.0%)	2026-08-08 23:48:44
NATIONAL GRID USA SERVICE CO, INC. owner	0003628997	ASR	8a93ddda6f1b6de44aedb44527556db528ac59e3f58a2688acbd094aed028211	Authoritative identifier (100.0%)	2026-08-08 05:18:45
NATIONAL GRID USA SERVICE CO, INC. owner	0003628997	ASR	8837f76a4cc3542c62a9dde75dd4912c19c918d92295690a6977b86effe65ada	Authoritative identifier (100.0%)	2026-08-08 03:18:42
NATIONAL GRID USA SERVICE CO, INC. owner	0003628997	ASR	75fa7e279a5e26624b5e707190be45ba594e4d63d44ecaf7a80a47f53b18d445	Authoritative identifier (100.0%)	2026-08-06 22:48:38
NATIONAL GRID USA SERVICE CO, INC. owner	0003628997	ASR	71ead3353a69779c2a1cf28aafae2a02997c8a03c0806b66c1954fb36e6ffa39	Authoritative identifier (100.0%)	2026-08-06 16:18:33
NATIONAL GRID USA SERVICE CO, INC. owner	0003628997	ASR	69063bc28f33f7af1286ddc8d3bffaf055a60e5e2b772ee75bf3534e87d6c642	Authoritative identifier (100.0%)	2026-08-06 04:48:32
NATIONAL GRID USA SERVICE CO, INC. owner	0003628997	ASR	48543dd569c292d6744a2ce19a959b21a9b90bfa98af53c61176f9c86be07f03	Authoritative identifier (100.0%)	2026-08-04 15:18:25
NATIONAL GRID USA SERVICE CO, INC. owner	0003628997	ASR	4769f9891aa8bcb3b439b14245d9567c973252ad90196142278193ab00356c03	Authoritative identifier (100.0%)	2026-08-04 13:48:26
NATIONAL GRID USA SERVICE CO, INC. owner	0003628997	ASR	4361f70e5706df3b8866398e250e1cce0239a823c99f040742464730893f01c8	Authoritative identifier (100.0%)	2026-08-04 09:48:25
NATIONAL GRID USA SERVICE CO, INC. owner	0003628997	ASR	38fd5a0649ee20a28cd6b562485f853fc7c8a28954a6cc35878315c034330b9b	Authoritative identifier (100.0%)	2026-08-03 18:48:20
NATIONAL GRID USA SERVICE CO, INC. owner	0003628997	ASR	3505c07b10e14ac3f2fc73c7a701b61eaf0186604eee8c30128eab8f94da6684	Authoritative identifier (100.0%)	2026-08-03 14:18:21
NATIONAL GRID USA SERVICE CO, INC. owner	0003628997	ASR	2c18c1c9b3a27a05c959c34d787de8108d5b17867a6d1227edfeb544c6263d9d	Authoritative identifier (100.0%)	2026-08-02 23:18:21
NATIONAL GRID USA SERVICE CO, INC. owner	0003628997	ASR	2b48aaf177394af03bf4bc0e558b6f16f650d8395c70760556ae93c0e1b402f9	Authoritative identifier (100.0%)	2026-08-02 22:18:20
NATIONAL GRID USA SERVICE CO, INC. owner	0003628997	ASR	091453e2358f44be193fed9f9546732635e01458b9129b1a7ec581ff2fc3803d	Authoritative identifier (100.0%)	2026-08-01 03:48:11
NATIONAL GRID USA SERVICE CO, INC. owner	0003628997	ASR	010777bc37b68dc5f23cf742b110bbce5001a749c39bf44396d0a248355e8013	Authoritative identifier (100.0%)	2026-07-31 17:04:40