Domain

langchain.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 langchain.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

108

CT + scan + body

Record Types

seen in DNS

Observed Certs

in our scans

DNS Records

198.202.211.1

AAAA

—

1 smtp.google.com

ns-cloud-c1.googledomains.com, ns-cloud-c2.googledomains.com, ns-cloud-c3.googledomains.com, ns-cloud-c4.googledomains.com

TXT

MS=ms60202630, google-site-verification=MZV-DrUglhroyDj0lCk7AP5YOKy4GGEgUaIyLjCXEb8, google-site-verification=d192uA19ZkwkREu9NZKM9hxDB1t90uIMHp5gFbBBuzw, google-site-verification=nezqC2hbpeFSFJDIKE_6_ADSKsl4j9dTvwk782NSL9E, google-site-verification=wP16h2Joxep73RW-Hb8fneAizDK4FCn_6a4DnsbOdrM, google-site-verification=wUPxN5SwJJSQGceU6cVjpkHI-08DZaqJSlAgg_55nj4, linkedin-site-verification=f15545d4-d50f-424a-9076-ceebd5e91424, v=spf1 include:_spf.google.com include:242623570.spf06.hubspotemail.net include:servers.mcsv.net ~all

CNAME

—

CAA

0 issue "amazon.com", 0 issue "digicert.com; cansignhttpexchanges=yes", 0 issue "letsencrypt.org", 0 issue "pki.goog; cansignhttpexchanges=yes", 0 issue "sectigo.com", 0 issuewild "digicert.com; cansignhttpexchanges=yes", 0 issuewild "letsencrypt.org", 0 issuewild "pki.goog; cansignhttpexchanges=yes"

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
kb.langchain.com	18.238.243.57 2600:9000:2090:2600:a:cbe8:cac0:93a1 2600:9000:2090:1800:a:cbe8:cac0:93a1 2600:9000:2090:d000:a:cbe8:cac0:93a1 +8	2026-06-16 20:51:27.512
docs.langchain.com	172.66.3.9 104.18.2.204 2606:4700::6812:3cc 2606:4700::6812:2cc +4	2026-07-20 07:36:52.229
python.langchain.com	216.150.1.65 216.150.1.129 216.150.16.129 216.150.16.1 +4	2026-07-21 07:56:50.696
reference.langchain.com	216.150.1.1 216.150.16.1 216.150.16.65 216.150.1.65 +2	2026-07-23 02:50:41.985
academy.langchain.com	104.18.35.159 172.64.152.97 2606:4700:440b::ac40:9861 2a06:98c1:3109::6812:239f	2026-07-23 12:19:17.588
api.python.langchain.com	104.16.254.120 104.16.253.120 2606:4700::6810:fd78 2606:4700::6810:fe78	2026-05-27 01:49:21.268
aws.smith.langchain.com	18.64.211.52 18.64.211.116 18.64.211.47 18.64.211.27	2026-06-23 02:19:45.161
aws.api.host.langchain.com	16.59.98.147 3.134.146.243 3.150.87.246	2026-06-23 02:19:45.161
aws.api.hub.langchain.com	3.134.146.243 3.150.87.246 16.59.98.147	2026-06-23 02:19:45.161
aws.api.smith.langchain.com	3.134.146.243 3.150.87.246 16.59.98.147	2026-06-23 02:19:45.161
gtm.langconnect.langchain.com	44.232.96.133 44.226.45.6 44.226.179.247	2026-05-26 11:56:55.544
langsmith-rr.workshop.langchain.com	52.35.245.223 44.237.124.35 32.184.181.74	2026-05-26 13:00:24.191
changelog.langchain.com	34.235.178.45 44.218.149.214	2026-06-15 06:37:08.641
chat.langchain.com	76.76.21.142 66.33.60.66	2026-07-17 18:53:41.038
eu.auth.langchain.com	172.64.149.246 104.18.38.10	2026-06-15 21:26:50.500
forum.langchain.com	216.66.8.43 2602:fd3f:2:ff01::2b	2026-07-27 07:28:02.530
integrations.langchain.com	76.76.21.22 66.33.60.129	2026-05-27 01:49:21.268
interrupt.langchain.com	198.202.211.1 2620:cb:2000::1	2026-06-23 20:52:59.625
js.langchain.com	76.76.21.93 66.33.60.194	2026-05-27 01:49:21.268
llm-auth-proxy.workshop.langchain.com	18.218.251.215 3.12.156.80	2026-05-27 17:06:50.048
www.langchain.com	198.202.211.1 2620:cb:2000::1	2026-07-26 09:10:48.160
api.dev.smith.langchain.com		1970-01-01 00:00:00.000
api.host.langchain.com		1970-01-01 00:00:00.000
api.js.langchain.com		1970-01-01 00:00:00.000
api.smith.langchain.com		1970-01-01 00:00:00.000
autoevaluator.langchain.com		1970-01-01 00:00:00.000
beacon.langchain.com		1970-01-01 00:00:00.000
beta.api.host.langchain.com	34.149.167.83	2026-07-20 14:34:18.677
beta.api.smith.langchain.com	34.149.167.83	2026-07-20 14:34:18.677
beta.beacon.langchain.com	34.149.167.83	2026-07-20 14:34:18.677
beta.smith.langchain.com	34.149.167.83	2026-07-20 14:34:18.677
blog.langchain.com	34.8.121.39	2026-07-23 21:56:58.256
build.langchain.com		1970-01-01 00:00:00.000
dev.api.host.langchain.com		1970-01-01 00:00:00.000
dev.api.hub.langchain.com		1970-01-01 00:00:00.000
dev.api.smith.langchain.com		1970-01-01 00:00:00.000
dev.auth.smith.langchain.com		1970-01-01 00:00:00.000
dev.beacon.langchain.com		1970-01-01 00:00:00.000
dev.smith.langchain.com		1970-01-01 00:00:00.000
dev.tools.langchain.com		1970-01-01 00:00:00.000
docs.smith.langchain.com		1970-01-01 00:00:00.000
eu.api.host.langchain.com	34.95.92.214	2026-07-19 16:02:28.638
eu.api.hub.langchain.com	34.95.92.214	2026-07-19 16:02:28.638
eu.api.smith.langchain.com	34.95.92.214	2026-07-19 16:02:28.638
eu.beacon.langchain.com	34.95.92.214	2026-07-19 16:02:28.638
eu.gateway.smith.langchain.com	34.95.92.214	2026-07-19 16:02:28.638
eu.smith.langchain.com	34.95.92.214	2026-07-19 16:02:28.638
eu.status.smith.langchain.com		1970-01-01 00:00:00.000
eu.tools.langchain.com	34.95.92.214	2026-07-19 16:02:28.638
langchain.com	198.202.211.1	2026-07-20 21:28:22.302
leaderboard.agents.langchain.com		1970-01-01 00:00:00.000
opengpts.langchain.com		1970-01-01 00:00:00.000
pr-13633-api.dev.smith.langchain.com		1970-01-01 00:00:00.000
pr-13633.api.dev.smith.langchain.com		1970-01-01 00:00:00.000
pr-13633.dev.smith.langchain.com		1970-01-01 00:00:00.000
smith.langchain.com	34.8.121.39	2026-07-24 06:12:19.818
status.smith.langchain.com		1970-01-01 00:00:00.000
support.langchain.com		1970-01-01 00:00:00.000
templates.langchain.com		1970-01-01 00:00:00.000
trust.langchain.com		1970-01-01 00:00:00.000
v03.api.js.langchain.com		1970-01-01 00:00:00.000
www.aws.smith.langchain.com		1970-01-01 00:00:00.000
www.beta.smith.langchain.com	34.149.167.83	2026-07-20 14:34:18.677
www.dev.smith.langchain.com		1970-01-01 00:00:00.000
www.eu.smith.langchain.com	34.95.92.214	2026-07-19 16:02:28.638
www.pr-13633.dev.smith.langchain.com		1970-01-01 00:00:00.000
www.smith.langchain.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

34.95.92.214:443 6479cabf6a9d…

Subject: www.eu.smith.langchain.com

Issuer: YR1

SANs: eu.api.host.langchain.com, eu.api.hub.langchain.com, eu.api.smith.langchain.com, eu.beacon.langchain.com, eu.gateway.smith.langchain.com, eu.langr.ph, eu.smith.langchain.com, eu.tools.langchain.com, www.eu.smith.langchain.com

34.110.168.199:443 1dc359eec045…

Subject: opengpts.langchain.com

Issuer: WR3

SANs: opengpts.langchain.com

3.12.156.80:443 16123bfdb0c2…

Subject: llm-auth-proxy.workshop.langchain.com

Issuer: Amazon RSA 2048 M01

SANs: llm-auth-proxy.workshop.langchain.com

44.241.127.43:443 d7cb8cb2fae4…

Subject: gtm.langconnect.langchain.com

Issuer: Amazon RSA 2048 M01

SANs: gtm.langconnect.langchain.com

44.254.181.148:443 e418bb23547d…

Subject: langsmith-rr.workshop.langchain.com

Issuer: Amazon RSA 2048 M04

SANs: langsmith-rr.workshop.langchain.com

184.34.128.65:443 d7cb8cb2fae4…

Subject: gtm.langconnect.langchain.com

Issuer: Amazon RSA 2048 M01

SANs: gtm.langconnect.langchain.com

54.191.192.177:443 e418bb23547d…

Subject: langsmith-rr.workshop.langchain.com

Issuer: Amazon RSA 2048 M04

SANs: langsmith-rr.workshop.langchain.com

IPs Citing This Domain

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

179.253.240.40:443 href · ×1

43.156.71.238:8080 href · ×1

43.167.176.207:443 href · ×1

43.133.0.58:443 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.

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
TXT	google-site-verification=nezqC2hbpeFSFJDIKE_6_ADSKsl4j9dTvwk782NSL9E	2026-05-27 12:13:36.011	2026-07-20 21:28:22.302
NS	ns-cloud-c1.googledomains.com	2026-05-27 12:13:36.011	2026-07-20 21:28:22.302
CAA	0 issue "sectigo.com"	2026-05-27 12:13:36.011	2026-07-20 21:28:22.302
TXT	linkedin-site-verification=f15545d4-d50f-424a-9076-ceebd5e91424	2026-05-27 12:13:36.011	2026-07-20 21:28:22.302
TXT	v=spf1 include:_spf.google.com include:242623570.spf06.hubspotemail.net include:servers.mcsv.net ~all	2026-05-27 12:13:36.011	2026-07-20 21:28:22.302
TXT	google-site-verification=wUPxN5SwJJSQGceU6cVjpkHI-08DZaqJSlAgg_55nj4	2026-05-27 12:13:36.011	2026-07-20 21:28:22.302
TXT	xbuvf8ogot	2026-05-27 12:13:36.011	2026-07-20 21:28:22.302
TXT	MS=ms60202630	2026-05-27 12:13:36.011	2026-07-20 21:28:22.302
NS	ns-cloud-c3.googledomains.com	2026-05-27 12:13:36.011	2026-07-20 21:28:22.302
CAA	0 issue "amazon.com"	2026-05-27 12:13:36.011	2026-07-20 21:28:22.302
TXT	google-site-verification=wP16h2Joxep73RW-Hb8fneAizDK4FCn_6a4DnsbOdrM	2026-05-27 12:13:36.011	2026-07-20 21:28:22.302
CAA	0 issuewild "sectigo.com"	2026-05-27 12:13:36.011	2026-07-20 21:28:22.302
MX	1 smtp.google.com	2026-05-27 12:13:36.011	2026-07-20 21:28:22.302
CAA	0 issuewild "digicert.com; cansignhttpexchanges=yes"	2026-05-27 12:13:36.011	2026-07-20 21:28:22.302
TXT	google-site-verification=d192uA19ZkwkREu9NZKM9hxDB1t90uIMHp5gFbBBuzw	2026-05-27 12:13:36.011	2026-07-20 21:28:22.302
CAA	0 issue "digicert.com; cansignhttpexchanges=yes"	2026-05-27 12:13:36.011	2026-07-20 21:28:22.302
NS	ns-cloud-c4.googledomains.com	2026-05-27 12:13:36.011	2026-07-20 21:28:22.302
CAA	0 issuewild "letsencrypt.org"	2026-05-27 12:13:36.011	2026-07-20 21:28:22.302
A	198.202.211.1	2026-05-27 12:13:36.011	2026-07-20 21:28:22.302
CAA	0 issuewild "pki.goog; cansignhttpexchanges=yes"	2026-05-27 12:13:36.011	2026-07-20 21:28:22.302
NS	ns-cloud-c2.googledomains.com	2026-05-27 12:13:36.011	2026-07-20 21:28:22.302
CAA	0 issue "letsencrypt.org"	2026-05-27 12:13:36.011	2026-07-20 21:28:22.302
CAA	0 issue "pki.goog; cansignhttpexchanges=yes"	2026-05-27 12:13:36.011	2026-07-20 21:28:22.302
TXT	google-site-verification=MZV-DrUglhroyDj0lCk7AP5YOKy4GGEgUaIyLjCXEb8	2026-07-15 20:04:13.980	2026-07-20 21:28:22.302