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	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