Domain

source.l4d.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 source.l4d.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

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CT + scan + body

Record Types

seen in DNS

Observed Certs

in our scans

DNS Records

104.102.22.50, 104.126.125.147, 173.223.113.143, 184.24.161.37, 184.31.66.9, 23.200.171.93, 23.45.237.59, 23.55.224.97

AAAA

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TXT

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CNAME

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CAA

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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

194.87.43.127:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

SANs: aperturescience.com, community.steam-api.com, counter-strike.net, dayofdefeat.com, forums.l4d.com, half-life.com, half-life2.com, help.steampowered.com, l4d.com, learnwithportals.com, midnight-riders.com, orange.half-life2.com, s.team, source.l4d.com, sourcefilmmaker.com, steam-chat.com, steam.tv, steamcommunity.com, steamdevdays.com, steamgames.com, steampowered.com, steamvr.com, store.counter-strike.net, store.steampowered.com, store.teamfortress.com, storefront.steampowered.com, teamfortress.com, thinkwithportals.com, underlords.com, valvesoftware.com, www.aperturescience.com, www.counter-strike.net, www.dayofdefeat.com, www.half-life.com, www.half-life2.com, www.l4d.com, www.learnwithportals.com, www.midnight-riders.com, www.sourcefilmmaker.com, www.steamcommunity.com, www.steamdevdays.com, www.steamgames.com, www.steampowered.com, www.steamvr.com, www.teamfortress.com, www.thinkwithportals.com, www.underlords.com, www.valvesoftware.com

23.33.37.237:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

104.86.145.50:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

23.59.42.243:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

23.47.14.86:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

23.94.37.41:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

146.185.239.74:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

150.241.92.190:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

78.40.197.159:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

173.223.138.120:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

109.61.17.56:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

85.192.63.206:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

104.94.122.13:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

23.55.69.72:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

23.209.227.253:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

104.85.236.100:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

154.26.183.145:8443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

23.219.12.91:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

185.51.60.101:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

37.228.129.152:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

23.220.229.86:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

23.199.93.71:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

23.76.38.100:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

23.56.229.74:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

151.241.14.77:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

72.56.127.238:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

146.59.17.120:8443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

23.12.12.110:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

184.51.211.152:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

217.60.37.239:443 d1430832bbc3…

Subject: steamcommunity.com

Issuer: YR1

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.

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

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	104.102.22.50	2026-05-31 04:25:40.750	2026-07-20 05:52:57.890
A	23.56.200.48	2026-05-31 13:23:40.817	2026-05-31 13:23:40.817
A	104.126.125.147	2026-06-15 22:55:45.187	2026-07-22 00:01:40.910
A	184.24.161.37	2026-06-21 09:51:05.538	2026-07-27 12:21:18.087
A	23.55.224.97	2026-06-22 16:03:21.680	2026-06-22 16:03:21.680
A	184.31.66.9	2026-07-17 01:03:55.008	2026-07-23 17:19:18.601
A	23.200.171.93	2026-07-20 04:57:06.904	2026-07-20 04:57:06.904
A	23.45.237.59	2026-07-25 05:24:59.607	2026-07-25 05:24:59.607
A	173.223.113.143	2026-07-27 21:48:21.645	2026-07-27 21:48:21.645