Check-Host.cc

Domain

about.att.com

Aggregated from public BGP, CT logs, our scan layer, honeypots and global probes.

Run a live full scan of about.att.com

On-demand: ports, banners, TLS, tech-stack, subdomains and origin/IP-leak detection. Results are shared publicly for everyone to link to.

Deep-scan now
Hosting IPs
A/AAAA targets
Subdomains
CT + scan + body
Record Types
seen in DNS
Observed Certs
in our scans

DNS Records

A
2.19.103.2, 23.220.113.177, 23.58.106.38, 88.221.169.109
AAAA
2a02:26f0:1180:685::2db1, 2a02:26f0:1180:699::2db1, 2a02:26f0:1180:69a::2db1, 2a02:26f0:1700:381::2db1, 2a02:26f0:1700:394::2db1, 2a02:26f0:c6:39d::2db1, 2a02:26f0:c6:3ad::2db1, 2a02:26f0:c6:3ba::2db1
MX
NS
TXT
CNAME
CAA

WHOIS / Registration

Registration data planned

Registrar, creation/expiry dates and domain status via RDAP. Rolling out gradually — bulk WHOIS is rate-limited, so we resolve on a prioritized cadence.

Subdomains

Subdomain enumeration pending

Every subdomain ever issued a TLS cert under this apex — extracted from Certificate Transparency logs, our own scan observations and body references.

Tech Stack

Tech detection pending

Wappalyzer-rules detect CMS, frameworks, analytics, JS libs and server-side languages on this domain.

TLS Certificates

Certificate observations pending

TLS certs naming this domain in subject or SANs will appear here as our scan-layer catches them.

IPs Citing This Domain

Hosts whose HTML body references this domain. Strong signal for origin/mirror/embed discovery.

178.128.153.61:80 href · ×1
137.184.114.74:443 href · ×1

Origin / IP-Leak

USP

When a hostname is served behind a CDN (e.g. Cloudflare), the origin server can sometimes be identified by matching its TLS cert against the protected hostname. Findings shown here are heuristic candidates, not guarantees.

No origin-IP leaks detected (yet)

Either this domain doesn't sit behind a CDN, or we haven't seen a TLS cert from a non-CDN IP matching this hostname. Run a fullscan to refresh the cert→IP cross-reference.

CT-Log Evidence

Certificates from public Certificate Transparency logs whose subject or SAN names this domain — including historic certs we never observed live.

38b78a3b0450d45b… google · xenon2026h2
Subject: about.att.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: about.att.com
Valid: 2026-03-17 00:00:00 → 2026-10-01 23:59:59
ba8e393535a446a7… google · xenon2026h2
Subject: about.att.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: about.att.com
Valid: 2026-03-17 00:00:00 → 2026-10-01 23:59:59
15199efa8dd59332… google · xenon2026h1
Subject: about.att.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: about.att.com
Valid: 2025-07-09 00:00:00 → 2026-05-10 23:59:59
15199efa8dd59332… cloudflare · nimbus2026
Subject: about.att.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: about.att.com
Valid: 2025-07-09 00:00:00 → 2026-05-10 23:59:59
6a2def9772fa986f… google · argon2026h1
Subject: about.att.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: about.att.com
Valid: 2025-05-28 00:00:00 → 2026-06-28 23:59:59
6a2def9772fa986f… google · xenon2026h1
Subject: about.att.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: about.att.com
Valid: 2025-05-28 00:00:00 → 2026-06-28 23:59:59
bd1b0106a08999f1… google · argon2026h1
Subject: about.att.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: about.att.com
Valid: 2025-04-09 00:00:00 → 2026-05-10 23:59:59
bd1b0106a08999f1… cloudflare · nimbus2026
Subject: about.att.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: about.att.com
Valid: 2025-04-09 00:00:00 → 2026-05-10 23:59:59

Threat Intelligence

Domain threat-intel pending

Matches in URLhaus, OpenPhish, PhishTank, malware feeds, and Spamhaus DBL.

History

Passive DNS — every value this name ever resolved to and when we first / last observed it. Updates every cycle of our forward-DNS crawler.

Type Value First seen Last seen
AAAA 2a02:26f0:1700:394::2db1 2026-05-27 08:36:38.549 2026-06-17 16:31:09.523
AAAA 2a02:26f0:1700:381::2db1 2026-05-27 08:36:38.549 2026-06-17 16:31:09.523
A 88.221.169.109 2026-05-27 08:36:38.549 2026-05-27 08:36:38.549
AAAA 2a02:26f0:c6:3ba::2db1 2026-05-27 08:46:39.912 2026-05-27 08:46:39.912
AAAA 2a02:26f0:c6:3ad::2db1 2026-05-27 08:46:39.912 2026-05-27 08:46:39.912
A 2.19.103.2 2026-05-27 08:46:39.912 2026-05-27 08:46:39.912
AAAA 2a02:26f0:c6:39d::2db1 2026-05-27 08:46:39.912 2026-05-27 08:46:39.912
AAAA 2a02:26f0:1180:69a::2db1 2026-06-16 18:13:48.003 2026-07-16 09:05:13.045
A 23.220.113.177 2026-06-16 18:13:48.003 2026-07-23 08:29:54.455
AAAA 2a02:26f0:1180:699::2db1 2026-06-16 18:13:48.003 2026-06-16 18:13:48.003
A 23.58.106.38 2026-06-17 16:31:09.523 2026-06-17 16:31:09.523
AAAA 2a02:26f0:fe00:18b::2db1 2026-07-16 08:59:42.295 2026-07-23 08:29:54.455
AAAA 2a02:26f0:fe00:1a3::2db1 2026-07-16 08:59:42.295 2026-07-23 08:29:54.455
AAAA 2a02:26f0:1180:685::2db1 2026-07-16 09:05:13.045 2026-07-16 09:05:13.045