Check-Host.cc

Try 1.1.1.1 AS13335 check-host.cc /country/de /tld/cc
Domain

mathsolver.microsoft.com

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

DNS Check HTTP Check Run Full Scan .com TLD

Run a live full scan of mathsolver.microsoft.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
64
A/AAAA targets
Subdomains
—
CT + scan + body
Record Types
2
seen in DNS
Observed Certs
—
in our scans

DNS Records

A
13.107.213.65, 13.107.226.42, 13.107.226.43, 13.107.226.67, 13.107.246.65, 13.107.253.42, 13.107.253.43, 13.107.253.67
AAAA
2603:1061:14:133::1, 2603:1061:14:134::1, 2603:1061:14:135::1, 2603:1061:14:137::1, 2603:1061:14:174::1, 2603:1061:14:1c2::1, 2603:1061:14:20::1, 2603:1061:14:21::1
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.

107.163.167.166:80 href · ×4
107.163.253.187:80 href · ×3
107.163.211.224:443 href · ×3
107.163.223.47:443 href · ×3
107.163.167.112:443 href · ×3
107.163.167.17:80 href · ×2
107.163.253.91:80 href · ×2
107.163.167.10:443 href · ×2
107.163.214.69:80 href · ×2
107.163.208.91:80 href · ×2
192.229.64.3:80 href · ×2
107.163.167.187:443 href · ×2
107.163.211.223:80 href · ×2
107.163.208.107:443 href · ×2
192.229.65.145:443 href · ×2
107.163.208.149:443 href · ×2
192.229.64.105:443 href · ×2
107.163.167.68:443 href · ×2
192.229.65.161:443 href · ×2
192.229.65.158:443 href · ×2
107.163.230.55:80 href · ×2
107.163.253.75:443 href · ×2
192.229.64.137:80 href · ×2
107.163.253.152:80 href · ×2
107.163.167.12:80 href · ×2
192.229.64.20:443 href · ×2
107.163.229.35:443 href · ×2
107.163.229.76:80 href · ×2
107.163.253.145:80 href · ×2
107.163.214.243:443 href · ×2
192.229.64.22:80 href · ×2
192.229.65.254:80 href · ×2
107.163.167.209:80 href · ×2
192.229.65.149:80 href · ×2
107.163.167.187:80 href · ×2
107.163.229.63:80 href · ×2
192.229.65.185:80 href · ×2
107.163.229.143:443 href · ×2
107.163.214.25:443 href · ×2
192.229.64.29:80 href · ×2
107.163.214.99:443 href · ×2
107.163.214.6:80 href · ×2
107.163.214.140:80 href · ×2
192.229.65.131:80 href · ×2
192.229.64.39:80 href · ×2
192.229.65.122:80 href · ×2
107.163.167.159:80 href · ×2
107.163.253.135:80 href · ×2
192.229.65.238:443 href · ×2
192.229.65.11:443 href · ×2

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.

769cfdfe7b4d7230… google · xenon2026h2
Subject: mathsolver.microsoft.com
Issuer: GeoTrust TLS RSA CA G1
SANs: mathsolver.microsoft.com
Valid: 2026-03-03 00:00:00 → 2026-09-03 23:59:59
c5ab3ed7cc0d4deb… google · xenon2026h2
Subject: mathsolver.microsoft.com
Issuer: GeoTrust TLS RSA CA G1
SANs: mathsolver.microsoft.com
Valid: 2026-03-03 00:00:00 → 2026-09-03 23:59:59
e7af4e7a0920544c… sectigo · elephant2026h1
Subject: mathsolver.microsoft.com
Issuer: GeoTrust Global TLS RSA4096 SHA256 2022 CA1
SANs: mathsolver.microsoft.com
Valid: 2025-11-06 00:00:00 → 2026-04-14 23:59:59
ff76e2f23279ecb8… sectigo · elephant2026h1
Subject: mathsolver.microsoft.com
Issuer: GeoTrust Global TLS RSA4096 SHA256 2022 CA1
SANs: mathsolver.microsoft.com
Valid: 2025-11-06 00:00:00 → 2026-04-14 23:59:59
e7af4e7a0920544c… cloudflare · nimbus2026
Subject: mathsolver.microsoft.com
Issuer: GeoTrust Global TLS RSA4096 SHA256 2022 CA1
SANs: mathsolver.microsoft.com
Valid: 2025-11-06 00:00:00 → 2026-04-14 23:59:59
ff76e2f23279ecb8… cloudflare · nimbus2026
Subject: mathsolver.microsoft.com
Issuer: GeoTrust Global TLS RSA4096 SHA256 2022 CA1
SANs: mathsolver.microsoft.com
Valid: 2025-11-06 00:00:00 → 2026-04-14 23:59:59
3f94fe78faf6d25b… cloudflare · nimbus2026
Subject: mathsolver.microsoft.com
Issuer: GeoTrust Global TLS RSA4096 SHA256 2022 CA1
SANs: mathsolver.microsoft.com
Valid: 2025-08-25 00:00:00 → 2026-02-25 23:59:59
3f94fe78faf6d25b… google · xenon2026h1
Subject: mathsolver.microsoft.com
Issuer: GeoTrust Global TLS RSA4096 SHA256 2022 CA1
SANs: mathsolver.microsoft.com
Valid: 2025-08-25 00:00:00 → 2026-02-25 23:59:59
3832e7db0e635a1c… cloudflare · nimbus2026
Subject: mathsolver.microsoft.com
Issuer: GeoTrust Global TLS RSA4096 SHA256 2022 CA1
SANs: mathsolver.microsoft.com
Valid: 2025-07-10 00:00:00 → 2026-01-10 23:59:59
fc983d507983ac25… cloudflare · nimbus2026
Subject: mathsolver.microsoft.com
Issuer: GeoTrust Global TLS RSA4096 SHA256 2022 CA1
SANs: mathsolver.microsoft.com
Valid: 2025-07-10 00:00:00 → 2026-01-10 23:59:59
fc983d507983ac25… sectigo · elephant2026h1
Subject: mathsolver.microsoft.com
Issuer: GeoTrust Global TLS RSA4096 SHA256 2022 CA1
SANs: mathsolver.microsoft.com
Valid: 2025-07-10 00:00:00 → 2026-01-10 23:59:59
3832e7db0e635a1c… google · xenon2026h1
Subject: mathsolver.microsoft.com
Issuer: GeoTrust Global TLS RSA4096 SHA256 2022 CA1
SANs: mathsolver.microsoft.com
Valid: 2025-07-10 00:00:00 → 2026-01-10 23:59:59
fc983d507983ac25… google · xenon2026h1
Subject: mathsolver.microsoft.com
Issuer: GeoTrust Global TLS RSA4096 SHA256 2022 CA1
SANs: mathsolver.microsoft.com
Valid: 2025-07-10 00:00:00 → 2026-01-10 23:59:59
86736a4e4f8eee4f… google · xenon2026h1
Subject: mathsolver.microsoft.com
Issuer: Microsoft Azure RSA TLS Issuing CA 03
SANs: *.mathsolver-prod.microsoft.com, mathsolver-prod.microsoft.com, math.microsoft.com, *.mathsolver.microsoft.com, mathsolver.microsoft.com
Valid: 2025-07-05 05:21:48 → 2026-01-01 05:21:48

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
A 150.171.109.35 2026-05-25 21:56:50.553 2026-07-21 10:20:36.022
AAAA 2603:1061:14:20::1 2026-05-25 21:56:50.553 2026-06-18 02:26:20.792
AAAA 2603:1061:14:22::1 2026-05-25 22:02:50.525 2026-07-21 15:56:06.425
A 150.171.109.36 2026-05-25 22:02:50.525 2026-07-17 13:54:03.518
AAAA 2603:1061:14:c1::1 2026-05-25 22:09:29.497 2026-05-30 08:27:40.870
A 150.171.109.101 2026-05-25 22:13:29.500 2026-06-23 23:54:32.134
AAAA 2603:1061:14:21::1 2026-05-25 22:13:29.500 2026-07-21 10:20:36.022
A 150.171.109.100 2026-05-26 00:03:35.658 2026-06-23 10:17:19.270
AAAA 2603:1061:14:63::1 2026-05-26 00:03:35.658 2026-06-20 01:28:04.604
AAAA 2603:1061:14:23::1 2026-05-26 00:12:34.719 2026-07-18 16:49:51.521
AAAA 2603:1061:14:133::1 2026-05-26 03:23:54.879 2026-07-16 15:42:38.075
A 150.171.109.34 2026-05-26 04:11:07.627 2026-07-18 16:49:51.521
A 150.171.109.33 2026-05-26 04:32:49.683 2026-06-23 23:49:26.837
AAAA 2603:1061:14:64::1 2026-05-26 04:46:48.284 2026-06-23 01:02:26.960
A 150.171.109.183 2026-05-26 05:39:17.045 2026-06-19 13:32:57.506
AAAA 2603:1061:14:b6::1 2026-05-26 05:39:17.045 2026-05-31 13:11:40.793
A 150.171.109.194 2026-05-26 06:44:29.317 2026-05-30 00:19:40.823
AAAA 2603:1061:14:1c2::1 2026-05-26 10:48:48.499 2026-05-30 14:35:40.863
A 13.107.253.67 2026-05-26 11:11:25.820 2026-07-16 13:06:25.944
A 13.107.226.67 2026-05-26 11:11:25.820 2026-07-16 13:06:25.944
A 150.171.109.193 2026-05-26 12:05:53.518 2026-05-30 21:35:40.873
AAAA 2603:1061:14:134::1 2026-05-26 18:10:02.153 2026-07-16 17:17:20.679
A 150.171.110.54 2026-05-26 20:46:08.549 2026-07-19 10:05:24.267
AAAA 2603:1061:14:c0::1 2026-05-27 01:21:18.273 2026-05-30 11:15:40.842
A 150.171.110.56 2026-05-27 03:37:54.908 2026-05-30 22:23:40.876
A 150.171.110.195 2026-05-27 04:14:48.202 2026-05-30 11:59:40.878
A 150.171.110.52 2026-05-27 05:59:14.051 2026-05-30 21:09:40.951
A 150.171.110.53 2026-05-27 08:46:39.912 2026-07-18 03:31:05.374
AAAA 2603:1061:14:137::1 2026-05-27 10:34:14.234 2026-07-17 15:32:47.032
AAAA 2603:1061:14:174::1 2026-05-27 11:16:08.370 2026-06-23 23:49:26.837
AAAA 2603:1061:14:135::1 2026-05-27 20:51:40.740 2026-07-18 02:14:59.772
AAAA 2620:1ec:48:1::45 2026-05-28 07:21:40.753 2026-05-28 07:21:40.753
AAAA 2620:1ec:29:1::45 2026-05-28 07:21:40.753 2026-05-28 07:21:40.753
AAAA 2620:1ec:48:1::38 2026-05-28 13:09:40.766 2026-05-28 13:09:40.766
AAAA 2620:1ec:29:1::38 2026-05-28 13:09:40.766 2026-05-28 13:09:40.766
AAAA 2620:1ec:bdf::65 2026-06-14 22:36:55.780 2026-06-17 13:36:59.692
AAAA 2620:1ec:46::65 2026-06-14 22:36:55.780 2026-06-17 13:36:59.692
A 150.171.109.212 2026-06-14 22:36:55.780 2026-06-14 22:36:55.780
A 150.171.110.117 2026-06-14 23:22:00.742 2026-06-14 23:22:00.742
AAAA 2603:1061:14:d1::1 2026-06-14 23:22:00.742 2026-06-14 23:22:00.742
AAAA 2603:1061:14:c4::1 2026-06-15 00:07:36.295 2026-06-23 00:59:11.721
AAAA 2620:1ec:48:1::43 2026-06-15 00:23:13.348 2026-06-15 00:23:13.348
A 13.107.253.43 2026-06-15 00:23:13.348 2026-06-15 00:23:13.348
AAAA 2620:1ec:29:1::43 2026-06-15 00:23:13.348 2026-06-15 00:23:13.348
A 13.107.226.43 2026-06-15 00:23:13.348 2026-06-15 00:23:13.348
A 150.171.109.196 2026-06-15 00:54:33.538 2026-06-20 01:57:57.509
A 150.171.109.214 2026-06-15 01:07:50.467 2026-06-15 01:07:50.467
AAAA 2603:1061:14:d6::1 2026-06-15 01:22:55.677 2026-06-15 01:22:55.677
AAAA 2603:1061:14:c3::1 2026-06-15 09:04:06.082 2026-06-23 00:28:38.211
A 150.171.109.197 2026-06-15 09:04:06.082 2026-06-23 01:02:26.960
A 150.171.109.198 2026-06-15 17:14:18.120 2026-06-23 00:59:11.721
AAAA 2603:1061:14:c5::1 2026-06-15 20:31:44.785 2026-06-23 10:17:19.270
AAAA 2620:1ec:29:1::42 2026-06-17 09:30:07.203 2026-06-17 09:30:07.203
A 13.107.226.42 2026-06-17 09:30:07.203 2026-06-17 09:30:07.203
AAAA 2620:1ec:48:1::42 2026-06-17 09:30:07.203 2026-06-17 09:30:07.203
A 13.107.253.42 2026-06-17 09:30:07.203 2026-06-17 09:30:07.203
A 13.107.213.65 2026-06-17 13:36:59.692 2026-06-17 13:36:59.692
A 13.107.246.65 2026-06-17 13:36:59.692 2026-06-17 13:36:59.692
A 150.171.109.51 2026-06-17 16:45:10.569 2026-07-20 15:31:51.659
AAAA 2603:1061:14:32::1 2026-06-17 18:20:40.292 2026-07-20 09:46:12.337
AAAA 2603:1061:14:34::1 2026-07-15 23:12:29.165 2026-07-20 15:31:51.659
A 150.171.109.53 2026-07-15 23:12:29.165 2026-07-21 15:56:06.425
AAAA 2620:1ec:48:1::67 2026-07-16 13:06:25.944 2026-07-16 13:06:25.944
AAAA 2620:1ec:29:1::67 2026-07-16 13:06:25.944 2026-07-16 13:06:25.944