Check-Host.cc

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

fb.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 fb.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
69
A/AAAA targets
Subdomains
121
CT + scan + body
Record Types
5
seen in DNS
Observed Certs
678
in our scans

DNS Records

A
—
AAAA
—
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

Every subdomain we know about — harvested from CT-log SANs, scan-observed certs and HTML body references — paired with its current A/AAAA target.

Subdomain Resolves to Last seen
fb.com
57.144.222.1 2a03:2880:f176:181:face:b00c:0:25de 2a03:2880:f37a:1:face:b00c:0:25de 2a03:2880:f36f:1:face:b00c:0:25de +17
2026-07-28 15:14:01.364
www.fb.com
57.144.222.1 2a03:2880:f177:185:face:b00c:0:25de 2a03:2880:f37a:1:face:b00c:0:25de 2a03:2880:f13f:83:face:b00c:0:25de +10
2026-07-28 04:49:52.055
phabricatorfiles.internmc.fb.com
57.144.222.134 2a03:2880:f37a:86:face:b00c:0:420d 2a03:2880:f37c:86:face:b00c:0:420d 2a03:2880:f083:102:face:b00c:0:420d +9
2026-07-28 09:13:54.986
newsroom.fb.com
157.240.0.13 2a03:2880:f03f:12:face:b00c:0:2 2a03:2880:f37c:8d:face:b00c:0:2 2a03:2880:f36f:8d:face:b00c:0:2 +7
2026-06-23 16:39:02.139
phabricatorfiles.intern.fb.com
57.144.222.146 2a03:2880:f03f:9:face:b00c:0:7c8d 2a03:2880:f083:113:face:b00c:0:7c8d 2a03:2880:f084:108:face:b00c:0:7c8d +7
2026-07-26 23:16:40.732
phabricator.internmc.fb.com
57.144.222.134 2a03:2880:f37a:86:face:b00c:0:420d 2a03:2880:f083:102:face:b00c:0:420d 2a03:2880:f084:10b:face:b00c:0:420d +6
2026-07-28 09:13:54.986
phabricatorfiles.cstools.fb.com
57.144.222.146 2a03:2880:f36f:92:face:b00c:0:7c8d 2a03:2880:f03f:9:face:b00c:0:7c8d 2a03:2880:f083:113:face:b00c:0:7c8d +5
2026-07-26 23:16:40.732
phabricator.cstools.fb.com
57.144.222.146 2a03:2880:f36f:92:face:b00c:0:7c8d 2a03:2880:f03f:9:face:b00c:0:7c8d 2a03:2880:f083:113:face:b00c:0:7c8d +4
2026-07-26 23:16:40.732
phabricator.intern.fb.com
57.144.222.146 2a03:2880:f083:113:face:b00c:0:7c8d 2a03:2880:f03f:9:face:b00c:0:7c8d 2a03:2880:f36f:92:face:b00c:0:7c8d +4
2026-07-26 23:16:40.732
h.fb.com
66.220.149.254 2a03:2880:ff:ffff:face:b00c:0:1 2a03:2880:10ff:fffe:face:b00c:0:1 2a03:2880:21ff:fffe:face:b00c:0:1 +2
2026-07-24 14:29:57.609
research.fb.com
57.144.248.141 157.240.0.13 157.240.27.18 2a03:2880:f084:10d:face:b00c:0:2 +2
2026-05-27 16:39:03.284
transparency.fb.com
157.240.27.18 57.144.248.141 57.144.244.141 2a03:2880:f03f:12:face:b00c:0:2 +1
2026-05-27 00:08:10.042
instantarticles.fb.com
57.144.222.141 2a03:2880:f36f:8d:face:b00c:0:2 157.240.27.18 2a03:2880:f37c:8d:face:b00c:0:2
2026-07-22 18:38:07.226
about.fb.com
192.0.66.109 2a04:fa87:fffd::c000:426d
2026-06-23 23:10:44.389
engineering.fb.com
192.0.66.236 2a04:fa87:fffd::c000:42ec
2026-05-27 01:25:50.658
opensource.fb.com
18.165.83.71 2600:9000:234c:3800:1f:2d3:8440:93a1
2026-07-23 17:19:18.601
www.opensource.fb.com
18.165.83.71 2600:9000:234c:3800:1f:2d3:8440:93a1
2026-07-23 17:19:18.601
appstore.fb.com
1970-01-01 00:00:00.000
autodiscover.fb.com
1970-01-01 00:00:00.000
bloodhound.outpost.fb.com
1970-01-01 00:00:00.000
covid-survey.dataforgood.fb.com
1970-01-01 00:00:00.000
dev.cloud.fb.com
1970-01-01 00:00:00.000
dev.us-west-2.vdi.fb.com
1970-01-01 00:00:00.000
email.frlstudies.fb.com
1970-01-01 00:00:00.000
enterpriseenrollment.fb.com
1970-01-01 00:00:00.000
hi5.fb.com
1970-01-01 00:00:00.000
humanrights.fb.com
1970-01-01 00:00:00.000
investor.fb.com
1970-01-01 00:00:00.000
prod.ap-south-1.vdi.fb.com
1970-01-01 00:00:00.000
prod.ap-southeast-1.vdi.fb.com
1970-01-01 00:00:00.000
prod.ap-southeast-3.vdi.fb.com
1970-01-01 00:00:00.000
prod.eu-west-1.vdi.fb.com
1970-01-01 00:00:00.000
prod.eu-west-2.vdi.fb.com
1970-01-01 00:00:00.000
prod.sa-east-1.vdi.fb.com
1970-01-01 00:00:00.000
prod.us-east-1.vdi.fb.com
1970-01-01 00:00:00.000
prod.us-east-2.vdi.fb.com
1970-01-01 00:00:00.000
prod.us-west-2.vdi.fb.com
1970-01-01 00:00:00.000
soydigital.fb.com
1970-01-01 00:00:00.000
soydigitalco.fb.com
1970-01-01 00:00:00.000
soydigitalcr.fb.com
1970-01-01 00:00:00.000
soydigitalmx.fb.com
1970-01-01 00:00:00.000
status.fb.com
1970-01-01 00:00:00.000
supernova.fb.com
1970-01-01 00:00:00.000
vault.code42.fb.com
1970-01-01 00:00:00.000
vdi.fb.com
1970-01-01 00:00:00.000
vsp.fb.com
1970-01-01 00:00:00.000
wethinkdigital.fb.com
1970-01-01 00:00:00.000
www.about.fb.com
1970-01-01 00:00:00.000
www.engineering.fb.com
1970-01-01 00:00:00.000
www.humanrights.fb.com
1970-01-01 00:00:00.000
www.phabricator.internmc.fb.com
1970-01-01 00:00:00.000
www.phabricatorfiles.internmc.fb.com
1970-01-01 00:00:00.000
www.soydigital.fb.com
1970-01-01 00:00:00.000
www.soydigitalco.fb.com
1970-01-01 00:00:00.000
www.soydigitalcr.fb.com
1970-01-01 00:00:00.000
www.soydigitalmx.fb.com
1970-01-01 00:00:00.000
www.wethinkdigital.fb.com
1970-01-01 00:00:00.000
wwww.fb.com
1970-01-01 00:00:00.000

Tech Stack

Tech detection pending

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

TLS Certificates

188.40.143.194:443 763f5bbdcbfe…
Subject: *.kpsfb.com
Issuer: R12
SANs: *.kpsfb.com, kpsfb.com
47.80.8.191:443 2a78e2a411ce…
Subject: *.afafb.com
Issuer: GeoTrust TLS RSA CA G1
SANs: *.afafb.com, afafb.com
165.22.43.224:443 c27ae3400c91…
Subject: mailserver.vlaofb.com
Issuer: YE2
SANs: mailserver.vlaofb.com
47.77.42.166:443 2a78e2a411ce…
Subject: *.afafb.com
Issuer: GeoTrust TLS RSA CA G1
SANs: *.afafb.com, afafb.com
14.225.211.36:443 a1d89aa7fe20…
Subject: hoangclonefb.com
Issuer: YR1
SANs: hoangclonefb.com, www.hoangclonefb.com
172.80.72.105:443 83f813a6cf1d…
Subject: yk.yinhufb.com
Issuer: R13
SANs: yk.yinhufb.com
38.6.33.186:443 668e0bf17d21…
Subject: www.0451pfb.com
Issuer: E8
SANs: 0451pfb.com, m.0451pfb.com, wap.0451pfb.com, www.0451pfb.com
104.16.58.117:8443 7897f39d9d16…
Subject: yolafb.com
Issuer: WE1
SANs: *.yolafb.com, yolafb.com
57.145.9.156:443 485bf0e30483…
Subject: *.fb.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.fb.com, fb.com
38.6.53.55:443 668e0bf17d21…
Subject: www.0451pfb.com
Issuer: E8
SANs: 0451pfb.com, m.0451pfb.com, wap.0451pfb.com, www.0451pfb.com
57.144.249.156:443 485bf0e30483…
Subject: *.fb.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.fb.com, fb.com
172.80.73.45:443 83f813a6cf1d…
Subject: yk.yinhufb.com
Issuer: R13
SANs: yk.yinhufb.com
57.144.45.156:443 9b9544e7015e…
Subject: *.fb.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.fb.com, fb.com
116.62.116.71:443 e44212c30b8b…
Subject: www.100tfb.com
Issuer: Encryption Everywhere DV TLS CA - G2
SANs: 100tfb.com, www.100tfb.com
144.168.119.147:443 83f813a6cf1d…
Subject: yk.yinhufb.com
Issuer: R13
SANs: yk.yinhufb.com
41.78.157.245:443 fefb40a19322…
Subject: *.indulgemfb.com
Issuer: ZeroSSL RSA DV SSL CA 2
SANs: *.indulgemfb.com, indulgemfb.com
137.74.117.219:443 925ea09d8e2f…
Subject: mail.gmailfb.com
Issuer: YR1
SANs: mail.gmailfb.com
31.13.69.233:443 95e7b562f5a6…
Subject: *.internalfb.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.internalfb.com, internalfb.com
157.240.202.201:443 9b9544e7015e…
Subject: *.fb.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.fb.com, fb.com
180.153.103.246:443 345aa42fe469…
Subject: applecn.fujifilm-fb.com.cn
Issuer: SGPAPHQ-INTCA02
SANs: CHN-MSVPN01, CHN-MSVPN01.dc01.fujixerox.net, CHN-MSVPN02, CHN-MSVPN02.dc01.fujixerox.net, applecn.fujifilm-fb.com.cn
185.60.217.210:443 9b9544e7015e…
Subject: *.fb.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.fb.com, fb.com
57.144.141.156:443 9b9544e7015e…
Subject: *.fb.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.fb.com, fb.com
155.138.211.114:443 dc37a0a38b43…
Subject: admin.maowangfb.com
Issuer: YE2
SANs: admin.maowangfb.com, api.maowangfb.com
59.124.146.72:443 dd523e2872ad…
Subject: tran.518fb.com
Issuer: TWCA Secure SSL Certification Authority
SANs: tran.518fb.com
184.28.71.151:443 59cec6dab60d…
Subject: doc.research-and-analytics.csfb.com
Issuer: GeoTrust TLS RSA CA G1
SANs: doc.research-and-analytics.csfb.com, doc.researchandanalytics-stg.credit-suisse.com, edge-qa-static.credit-suisse.com, edge-static.credit-suisse.com, holt-doc.credit-suisse.com, holt-uat-doc.credit-suisse.com, locus-qa-static.credit-suisse.com, locus-static.credit-suisse.com, plus-beta-static.credit-suisse.com, plus-static.credit-suisse.com, plus-uat-static.credit-suisse.com, research-beta-doc.credit-suisse.com, research-doc.credit-suisse.com, research-qa-doc.credit-suisse.com, research-uat-doc.credit-suisse.com, research-uit-doc.credit-suisse.com
31.13.87.13:443 7b7ea3c9903d…
Subject: *.fb.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.fb.com, fb.com
120.27.247.132:443 b1ed06e5036a…
Subject: *.hfcfb.com
Issuer: Xcc Trust OV SSL CA
SANs: *.hfcfb.com, hfcfb.com
102.132.97.233:443 e4dea26b417a…
Subject: *.internalfb.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: *.internalfb.com, internalfb.com
162.214.157.54:443 f090c5e85a00…
Subject: *.absolutefb.com
Issuer: R3
SANs: *.absolutefb.com, absolutefb.com
164.152.167.76:443 7561e4b64184…
Subject: accinsfb.com
Issuer: YR1
SANs: accinsfb.com

IPs Citing This Domain

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

158.180.51.170:443 href · ×10
35.212.141.37:80 href · ×8
128.254.224.88:80 href · ×6
103.162.31.96:443 href · ×5
158.180.51.170:80 href · ×5
138.68.98.148:443 href · ×4
14.225.208.252:80 href · ×4
13.215.33.48:443 href · ×4
49.51.204.220:443 href · ×4
52.58.244.131:443 href · ×4
132.145.80.145:443 href · ×4
34.96.67.179:443 href · ×4
129.159.49.173:443 href · ×4
169.58.15.136:443 href · ×4
95.217.44.48:443 href · ×3
3.70.26.249:80 href · ×3
185.233.38.51:443 href · ×3
35.226.144.201:443 href · ×2
147.102.153.223:80 href · ×2
42.96.19.25:443 href · ×2
51.159.37.210:443 href · ×2
158.180.88.139:443 href · ×2
95.217.44.48:80 href · ×2
65.21.51.35:443 href · ×2
134.102.123.244:8080 href · ×2
13.51.146.98:80 href · ×2
104.236.55.146:443 href · ×2
42.96.19.25:80 href · ×2
128.254.190.253:443 href · ×2
185.53.58.16:443 href · ×2
139.59.110.142:80 href · ×2
34.149.87.18:443 href · ×2
65.108.194.96:443 href · ×2
93.115.136.53:443 href · ×2
93.115.136.53:80 href · ×2
82.200.179.178:443 href · ×2
175.182.64.216:443 href · ×2
15.206.16.48:80 href · ×2
95.217.84.24:443 href · ×2
212.57.115.79:80 href · ×2
203.158.192.188:80 href · ×2
104.145.207.1:80 href · ×2
107.170.182.218:80 href · ×2
103.178.231.61:80 href · ×2
66.228.57.88:443 href · ×2
46.62.154.4:443 href · ×2
47.254.20.84:443 href · ×2
77.47.133.1:443 href · ×2
129.146.228.35:80 href · ×2
162.144.232.229:443 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.

Threat Intelligence

Domain threat-intel pending

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

History

Domain timeline pending

Passive-DNS history accumulates as our forward-DNS crawler observes A/AAAA/MX/NS/TXT records over time.