Check-Host.cc

Domain

register.com

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

Run a live full scan of register.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
162.159.135.39, 162.159.136.39
AAAA
MX
0 register-com.mail.eo.outlook.com
NS
heidi.ns.cloudflare.com, rex.ns.cloudflare.com
TXT
MS=ms10832387, MS=ms32923376, facebook-domain-verification=ve27qqe9b9xo0hl0kczky3sxs9teoo, google-site-verification=EaO7gkYr2gTM2BknYLpq5-VVBMmScHQMYcte1DH_5s0, google-site-verification=lPc9ZvInDA7hSTv9k8bLz06jutlU0u2zGSDGghTRhq4, google-site-verification=yfbeYJ98Q02mmnh9hSyevNXH5K3oZG-OPTvpj7y4YbE, v=spf1 ip4:209.17.115.0/24 ip4:209.237.134.0/24 ip4:64.69.208.0/24 ip4:64.69.212.0/24 ip4:64.69.218.0/24 ip4:74.200.28.190 ip4:98.124.246.29 include:spf.protection.outlook.com include:spf.websitewelcome.com -all
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

Subject: 11kk-register.com
Issuer: R13
SANs: 11kk-register.com, www.11kk-register.com
Subject: *.hosting.register.com
Issuer: Sectigo RSA Domain Validation Secure Server CA
SANs: *.hosting.register.com, hosting.register.com
Subject: 11kk-register.com
Issuer: R13
SANs: 11kk-register.com, www.11kk-register.com
Subject: *.hosting.register.com
Issuer: Sectigo RSA Domain Validation Secure Server CA
SANs: *.hosting.register.com, hosting.register.com
Subject: *.hosting.register.com
Issuer: Sectigo RSA Domain Validation Secure Server CA
SANs: *.hosting.register.com, hosting.register.com
Subject: 11kk-register.com
Issuer: R13
SANs: 11kk-register.com, www.11kk-register.com
Subject: jump.ias-register.com
Issuer: Sectigo Public Server Authentication CA DV R36
SANs: jump.ias-register.com
Subject: view.eml.register.com
Issuer: DigiCert Global G2 TLS RSA SHA256 2020 CA1
SANs: view.eml.register.com
Subject: *.register.com
Issuer: Sectigo Public Server Authentication CA DV R36
SANs: *.register.com, register.com
Subject: *.fixed-assets-register.com
Issuer: Go Daddy Secure Certificate Authority - G2
SANs: *.fixed-assets-register.com, fixed-assets-register.com
Subject: *.hosting.register.com
Issuer: Sectigo RSA Domain Validation Secure Server CA
SANs: *.hosting.register.com, hosting.register.com
Subject: *.hosting.register.com
Issuer: Sectigo RSA Domain Validation Secure Server CA
SANs: *.hosting.register.com, hosting.register.com
Subject: *.yiyouxuanregister.com
Issuer: GeoTrust G2 TLS CN RSA4096 SHA256 2022 CA1
SANs: *.yiyouxuanregister.com, yiyouxuanregister.com
Subject: 11kk-register.com
Issuer: R13
SANs: 11kk-register.com, www.11kk-register.com
Subject: 11kk-register.com
Issuer: R13
SANs: 11kk-register.com, www.11kk-register.com
Subject: 11kk-register.com
Issuer: R13
SANs: 11kk-register.com, www.11kk-register.com
Subject: aajkaregister.com
Issuer: YE1
SANs: aajkaregister.com, www.aajkaregister.com
Subject: *.hosting.register.com
Issuer: Sectigo RSA Domain Validation Secure Server CA
SANs: *.hosting.register.com, hosting.register.com
Subject: 11kk-register.com
Issuer: R13
SANs: 11kk-register.com, www.11kk-register.com
Subject: *.hosting.register.com
Issuer: Sectigo RSA Domain Validation Secure Server CA
SANs: *.hosting.register.com, hosting.register.com
Subject: 11kk-register.com
Issuer: R13
SANs: 11kk-register.com, www.11kk-register.com
Subject: 11kk-register.com
Issuer: R13
SANs: 11kk-register.com, www.11kk-register.com
Subject: 11kk-register.com
Issuer: R13
SANs: 11kk-register.com, www.11kk-register.com
Subject: *.hosting.register.com
Issuer: Sectigo RSA Domain Validation Secure Server CA
SANs: *.hosting.register.com, hosting.register.com
Subject: 11kk-register.com
Issuer: R13
SANs: 11kk-register.com, www.11kk-register.com
Subject: 11kk-register.com
Issuer: R13
SANs: 11kk-register.com, www.11kk-register.com
Subject: viridianprompt-register.com
Issuer: YE1
SANs: viridianprompt-register.com, www.viridianprompt-register.com
Subject: 11kk-register.com
Issuer: R13
SANs: 11kk-register.com, www.11kk-register.com
Subject: gsk-studyregister.com
Issuer: WE1
SANs: *.gsk-studyregister.com, gsk-studyregister.com
Subject: *.hosting.register.com
Issuer: Sectigo RSA Domain Validation Secure Server CA
SANs: *.hosting.register.com, hosting.register.com

IPs Citing This Domain

No citing IPs found yet

As the world-sweep progresses, hosts referencing this domain in their HTML will surface here.

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.

Origin IP Origin ASN CDN ASN Confidence Reasoning
209.237.142.160 AS19871 AS13335 95% cert 81b3cbc0… served by 209.237.142.160 (AS19871) carries SAN hosting.register.com which currently resolves through Cloudflare (AS13335) at 162.159.135.39, 162.159.136.39, 205.178.187.43

CT-Log Evidence

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

7c236fe35673651d… sectigo · elephant2026h1
Subject: register.com
Issuer: WE1
SANs: register.com, *.register.com
Valid: 2026-01-09 06:57:58 → 2026-04-09 07:57:42
0eaf83de82728a0c… sectigo · elephant2026h1
Subject: register.com
Issuer: Sectigo Public Server Authentication CA DV E36
SANs: register.com, *.register.com
Valid: 2025-12-19 00:00:00 → 2026-03-19 15:22:48
5d6c1b80aeae32d1… sectigo · elephant2026h1
Subject: register.com
Issuer: Sectigo Public Server Authentication CA DV E36
SANs: register.com, *.register.com
Valid: 2025-12-19 00:00:00 → 2026-03-19 15:22:48
bea1876f42d20d09… sectigo · elephant2026h1
Subject: register.com
Issuer: Sectigo Public Server Authentication CA DV R36
SANs: register.com, *.register.com
Valid: 2025-12-19 00:00:00 → 2026-03-19 15:21:09
f666f8249d130c6f… sectigo · elephant2026h1
Subject: register.com
Issuer: Sectigo Public Server Authentication CA DV R36
SANs: register.com, *.register.com
Valid: 2025-12-19 00:00:00 → 2026-03-19 15:21:09
7eaead94ad8c4433… cloudflare · nimbus2026
Subject: register.com
Issuer: WE1
SANs: register.com, *.register.com
Valid: 2025-11-11 02:08:35 → 2026-02-09 03:08:26
7eaead94ad8c4433… sectigo · elephant2026h1
Subject: register.com
Issuer: WE1
SANs: register.com, *.register.com
Valid: 2025-11-11 02:08:35 → 2026-02-09 03:08:26
32f222e22664b466… sectigo · elephant2026h1
Subject: register.com
Issuer: Sectigo Public Server Authentication CA DV E36
SANs: register.com, *.register.com
Valid: 2025-10-25 00:00:00 → 2026-01-21 23:33:22
6a5efd0682eea4a1… sectigo · elephant2026h1
Subject: register.com
Issuer: Sectigo Public Server Authentication CA DV E36
SANs: register.com, *.register.com
Valid: 2025-10-25 00:00:00 → 2026-01-21 23:33:22
472f0e71214c0753… sectigo · elephant2026h1
Subject: register.com
Issuer: Sectigo Public Server Authentication CA DV R36
SANs: register.com, *.register.com
Valid: 2025-10-23 00:00:00 → 2026-01-19 08:18:45
4ee0ede0e80807de… sectigo · elephant2026h1
Subject: register.com
Issuer: Sectigo Public Server Authentication CA DV R36
SANs: register.com, *.register.com
Valid: 2025-10-23 00:00:00 → 2026-01-19 08:18:45
420111638fd7b74c… cloudflare · nimbus2026
Subject: *.register.com
Issuer: Sectigo Public Server Authentication CA DV R36
SANs: *.register.com, register.com
Valid: 2025-08-27 00:00:00 → 2026-08-27 23:59:59
dd3bdd17d688aa25… google · xenon2026h2
Subject: *.register.com
Issuer: Sectigo Public Server Authentication CA DV R36
SANs: *.register.com, register.com
Valid: 2025-08-27 00:00:00 → 2026-08-27 23:59:59
420111638fd7b74c… google · argon2026h2
Subject: *.register.com
Issuer: Sectigo Public Server Authentication CA DV R36
SANs: *.register.com, register.com
Valid: 2025-08-27 00:00:00 → 2026-08-27 23:59:59
dd3bdd17d688aa25… google · argon2026h2
Subject: *.register.com
Issuer: Sectigo Public Server Authentication CA DV R36
SANs: *.register.com, register.com
Valid: 2025-08-27 00:00:00 → 2026-08-27 23:59:59
0831fae418546844… google · xenon2026h1
Subject: *.register.com
Issuer: Sectigo RSA Domain Validation Secure Server CA
SANs: *.register.com, register.com
Valid: 2025-02-20 00:00:00 → 2026-02-20 23:59:59
2cf0183971d96428… google · xenon2026h1
Subject: *.register.com
Issuer: Sectigo RSA Domain Validation Secure Server CA
SANs: *.register.com, register.com
Valid: 2025-02-20 00:00:00 → 2026-02-20 23:59:59
2cf0183971d96428… cloudflare · nimbus2026
Subject: *.register.com
Issuer: Sectigo RSA Domain Validation Secure Server CA
SANs: *.register.com, register.com
Valid: 2025-02-20 00:00:00 → 2026-02-20 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
A 162.159.135.39 2026-07-15 20:04:13.980 2026-07-22 06:37:48.710
NS heidi.ns.cloudflare.com 2026-07-15 20:04:13.980 2026-07-22 06:37:48.710
MX 0 register-com.mail.eo.outlook.com 2026-07-15 20:04:13.980 2026-07-22 06:37:48.710
TXT v=spf1 ip4:209.17.115.0/24 ip4:209.237.134.0/24 ip4:64.69.208.0/24 ip4:64.69.212.0/24 ip4:64.69.218.0/24 ip4:74.200.28.190 ip4:98.124.246.29 include:spf.protection.outlook.com include:spf.websitewelcome.com -all 2026-07-15 20:04:13.980 2026-07-22 06:37:48.710
TXT google-site-verification=yfbeYJ98Q02mmnh9hSyevNXH5K3oZG-OPTvpj7y4YbE 2026-07-15 20:04:13.980 2026-07-22 06:37:48.710
A 162.159.136.39 2026-07-15 20:04:13.980 2026-07-22 06:37:48.710
NS rex.ns.cloudflare.com 2026-07-15 20:04:13.980 2026-07-22 06:37:48.710
TXT MS=ms10832387 2026-07-15 20:04:13.980 2026-07-22 06:37:48.710
TXT MS=ms32923376 2026-07-15 20:04:13.980 2026-07-22 06:37:48.710
TXT facebook-domain-verification=ve27qqe9b9xo0hl0kczky3sxs9teoo 2026-07-15 20:04:13.980 2026-07-22 06:37:48.710
TXT google-site-verification=EaO7gkYr2gTM2BknYLpq5-VVBMmScHQMYcte1DH_5s0 2026-07-15 20:04:13.980 2026-07-22 06:37:48.710
TXT google-site-verification=lPc9ZvInDA7hSTv9k8bLz06jutlU0u2zGSDGghTRhq4 2026-07-15 20:04:13.980 2026-07-22 06:37:48.710