National Grid plc Professional & Scientific Services
FTSE 100 constituent (NG)
Overview
National Grid plc is classified under Professional & Scientific Services. Its primary domain, nationalgrid.com, spans 201 subdomains, among them dev-singlevision.us-electric.nationalgrid.com, formercolleaguedev.nationalgrid.com, and gridapi-wl-dev-appgw.dpit.nationalgrid.com. A crawl of www.nationalgrid.com returned one page, with no internal links, no title, and no TLS issuer recorded; HSTS is not enabled, though a Content-Security-Policy header is present. Network infrastructure is attributed to AS13335 (CLOUDFLARENET - Cloudflare, Inc., US), located in SE. Mail routes through mxa-003cc501.gslb.pphosted.com and mxb-003cc501.gslb.pphosted.com, with SPF present and a DMARC policy of reject; nameservers sit on its own domain, at ns01.nationalgrid.com and ns02.nationalgrid.com. The domain, registered through CSC Corporate Domains, Inc., dates to 1996-08-09 and expires 2026-12-09. Companies House lists company number 04031152 as active, incorporated on 2000-07-11, under SIC code 70100 (activities of head offices), with zero persons with significant control on record.
Generated from the data on this page and independently fact-checked against it.
Web presence
Primary domain: nationalgrid.com.
205 subdomains observed via Certificate Transparency and direct crawl.
1 pages fetched from
www.nationalgrid.com on 2026-08-26
— 0 internal links observed, 5582 bytes.
No TLS certificate detail captured. — HSTS not seen, CSP present, X-Frame-Options: SAMEORIGIN.
| Hostname | Source | First seen |
|---|---|---|
| rmdstream.usgas.nationalgrid.com | certificate_transparency | 2026-08-26 |
| dev-test-al.us-electric.nationalgrid.com | certificate_transparency | 2026-08-26 |
| wl2map.nationalgrid.com | certificate_transparency | 2026-08-26 |
| www.nationalgrid.com | manual | 2026-08-26 |
| connectnowus-qa.nationalgrid.com | certificate_transparency | 2026-08-26 |
| dev-singlevision.us-electric.nationalgrid.com | certificate_transparency | 2026-08-25 |
| formercolleaguedev.nationalgrid.com | certificate_transparency | 2026-08-25 |
| gridbridge-us.dpit.nationalgrid.com | certificate_transparency | 2026-08-25 |
| gridapi-wl-dev-appgw.dpit.nationalgrid.com | certificate_transparency | 2026-08-25 |
| api-us02.nationalgrid.com | certificate_transparency | 2026-08-25 |
| api-uat-us02.nationalgrid.com | certificate_transparency | 2026-08-25 |
| api-qa-us02.nationalgrid.com | certificate_transparency | 2026-08-25 |
| apitraining.nationalgrid.com | certificate_transparency | 2026-08-25 |
| webformsuat.uscustomer.nationalgrid.com | certificate_transparency | 2026-08-25 |
| formercolleague.nationalgrid.com | certificate_transparency | 2026-08-25 |
| portfolio-dev.nget.nationalgrid.com | certificate_transparency | 2026-08-25 |
| uat-api-01-deraconnect.us-electric.nationalgrid.com | certificate_transparency | 2026-08-25 |
| omwapi.us-electric.nationalgrid.com | certificate_transparency | 2026-08-25 |
| dev-api-01-aar-ny.us-electric.nationalgrid.com | certificate_transparency | 2026-08-25 |
| planning-dev.nget.nationalgrid.com | certificate_transparency | 2026-08-25 |
| gtis2-qa-api.usgas.nationalgrid.com | certificate_transparency | 2026-08-25 |
| sv-nonprod.us-electric.nationalgrid.com | certificate_transparency | 2026-08-25 |
| gtis2-perf-cus.usgas.nationalgrid.com | certificate_transparency | 2026-08-25 |
| static-svc.viperpro.us-electric.nationalgrid.com | certificate_transparency | 2026-08-25 |
| utilities.viperpro.us-electric.nationalgrid.com | certificate_transparency | 2026-08-25 |
Infrastructure
Hosted on: AS13335 CLOUDFLARENET - Cloudflare, Inc., US (SE)
Mail: mxa-003cc501.gslb.pphosted.com, mxb-003cc501.gslb.pphosted.com. SPF present. DMARC policy: reject. Nameservers: ns01.nationalgrid.com, ns02.nationalgrid.com.
Registered via CSC Corporate Domains, Inc.. Registered 1996-08-09. Expires 2026-12-09.
Digital sovereignty
1/5 — categories confirmed not tied to a US-controlled company, out of DNS, registrar, TLS certificate, host and mail. Ultimate ownership, not the jurisdiction of the specific entity observed: a subsidiary like Google Ireland still counts as American. See the full cross-index comparison.
OK DNS · US Registrar · – TLS certificate · US Primary host · US Inbound mail
Registrar: CSC Corporate Domains. Primary host: Cloudflare, Inc.. Inbound mail: Proofpoint.
Vendor footprint
Third-party vendors identified from this company's own published DNS —
apex TXT domain-verification tokens and SPF include: mechanisms. See the
full vendor footprint comparison.
Anthropic Atlassian (Jira / Confluence) Canva DocuSign Meta Business Perplexity Proofpoint Twilio
Corporate record
Company number 04031152,
Active, incorporated
2000-07-11.
SIC: 70100 - Activities of head offices.
Registered office: 1-3 STRAND, LONDON, WC2N 5EH.
Last confirmation statement: 2026-04-06.
Last accounts made up: 2026-03-31.
Persons with significant control (from the public register; month/year of birth only, matching Companies House's own disclosure limit):
- No active PSC entries on the public register.
Public engineering footprint
No public GitHub organisation identified.