BT Group Technology & Communications
FTSE 100 constituent (BT.A)
Overview
BT Group operates in the Technology & Communications sector, with its primary web presence at bt.com. 200 subdomains are recorded, including hosts under digital-ent-int.bt.com and indigo.bt.com. Nameservers dydns0.bt.com, dydns1.bt.com, eddns0.bt.com and eddns1.bt.com resolve back to the company's own domain - self-hosted DNS. Mail routes through btgroupcloud-mail-onmicrosoft-com.mail.protection.outlook.com; SPF is present and the DMARC policy is set to reject. The bt.com registration dates to 1992-06-18 through Network Solutions, LLC, with an expiry of 2027-06-17. Companies House lists company number 04190816, incorporated 2001-03-30, status Active, SIC code 61900 (other telecommunications activities). 1 person with significant control is on record, and no previous company names are listed. A GitHub organisation, BTplc, carries confirmed attribution but holds 0 public repositories and 0 stars.
Generated from the data on this page and independently fact-checked against it.
Web presence
Primary domain: bt.com.
273 subdomains observed via Certificate Transparency and direct crawl.
/robots.txt before it fetches anything, and treats an
unreadable one as a refusal rather than as permission. This site's CDN answers that request
with an error, so we cannot read what it does and does not allow — and we do not guess.
The infrastructure facts on this page come from DNS, Certificate Transparency and public
registries, none of which involve fetching the site itself.
How our crawler works.
| Hostname | Source | First seen |
|---|---|---|
| kafkaintegration.bt.com | certificate_transparency | 2026-08-26 |
| abp.test3.e1e27b7ae10c10e.euwe2.prd-plat.aws.bt.com | certificate_transparency | 2026-08-26 |
| dns-int-test-aa0-vd.testteamaa0.dev.digital-ent-int.bt.com | certificate_transparency | 2026-08-26 |
| e2etest-e2-ced1029.e2etestteam.d1.atom.digital-ent-int.bt.com | certificate_transparency | 2026-08-26 |
| devcfu-e2e-fd7f922.platform.d1.atom.digital-ent-int.bt.com | certificate_transparency | 2026-08-26 |
| e2etest-e2-ecd6b15.e2etestteam.d1.atom.digital-ent-int.bt.com | certificate_transparency | 2026-08-26 |
| devcfu-e2e-ef49e40.platform.d1.atom.digital-ent-int.bt.com | certificate_transparency | 2026-08-26 |
| feat-test-e2-e3521bb.e2etestteam.d1.atom.digital-ent-int.bt.com | certificate_transparency | 2026-08-26 |
| feat-test-e2-3bbb39e.e2etestteam.d1.atom.digital-ent-int.bt.com | certificate_transparency | 2026-08-26 |
| test-e2etest-74a9150.e2etestteam.d1.atom.digital-ent-int.bt.com | certificate_transparency | 2026-08-26 |
| feat-test-devcf-0a3a40f.platform.d1.atom.digital-ent-int.bt.com | certificate_transparency | 2026-08-26 |
| test-e2etest-10dc570.e2etestteam.d1.atom.digital-ent-int.bt.com | certificate_transparency | 2026-08-26 |
| test-devcfu-e2e-1223163.platform.d1.atom.digital-ent-int.bt.com | certificate_transparency | 2026-08-26 |
| betawholesale-auth.bt.com | certificate_transparency | 2026-08-26 |
| e2etest-e2-9fbb161.e2etestteam.d1.atom.digital-ent-int.bt.com | certificate_transparency | 2026-08-26 |
| dev-e2etest-eefd169.e2etestteam.d1.atom.digital-ent-int.bt.com | certificate_transparency | 2026-08-26 |
| devcfu-e2e-c8db477.platform.d1.atom.digital-ent-int.bt.com | certificate_transparency | 2026-08-26 |
| dev-e2etest-bc1de69.e2etestteam.d1.atom.digital-ent-int.bt.com | certificate_transparency | 2026-08-26 |
| dev-devcfu-e2en-f590364.platform.d1.atom.digital-ent-int.bt.com | certificate_transparency | 2026-08-26 |
| e2escd-dc4-0826.d1.atom.digital-ent-int.bt.com | certificate_transparency | 2026-08-26 |
| e2etest-e2-0041b47.e2etestteam.d1.atom.digital-ent-int.bt.com | certificate_transparency | 2026-08-26 |
| fix-cexe-216-consumer-4c8c532.orbit.dev.digital-ent-int.bt.com | certificate_transparency | 2026-08-26 |
| fix-comment-fix-consum-de02e34.orbit.dev.digital-ent-int.bt.com | certificate_transparency | 2026-08-26 |
| remote.support.bt.com | certificate_transparency | 2026-08-26 |
| oot-bff.servicing.dev.digital-ent-int.bt.com | certificate_transparency | 2026-08-26 |
Infrastructure
No hosting provider identified yet.
Mail: btgroupcloud-mail-onmicrosoft-com.mail.protection.outlook.com. SPF present. DMARC policy: reject. Nameservers: dydns0.bt.com, dydns1.bt.com, eddns0.bt.com, eddns1.bt.com.
Registered via Network Solutions, LLC. Registered 1992-06-18. Expires 2027-06-17.
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 · – Primary host · US Inbound mail
Registrar: Network Solutions. Inbound mail: Microsoft 365.
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.
Adobe Dynamic Tag Manager Apple Business Manager Atlassian (Jira / Confluence) Autodesk GlobalSign Google (Workspace / Search Console) Meta Business Microsoft 365 OneTrust Palo Alto Networks
Corporate record
Company number 04190816,
Active, incorporated
2001-03-30.
SIC: 61900 - Other telecommunications activities.
Registered office: 1 BRAHAM STREET, LONDON, E1 8EE.
Last confirmation statement: 2026-04-12.
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):
- (unnamed)
Public engineering footprint
BTplc on GitHub — 0 public repositories, 0 stars total.