Check-Host.cc

Domain

opencollective.com

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

Run a live full scan of opencollective.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
12
A/AAAA targets
Subdomains
35
CT + scan + body
Record Types
5
seen in DNS
Observed Certs
11
in our scans

DNS Records

A
104.26.12.145, 104.26.13.145, 172.67.71.29
AAAA
2606:4700:20::681a:c91, 2606:4700:20::681a:d91, 2606:4700:20::ac43:471d
MX
1 aspmx.l.google.com, 10 alt3.aspmx.l.google.com, 10 alt4.aspmx.l.google.com, 5 alt1.aspmx.l.google.com, 5 alt2.aspmx.l.google.com
NS
pablo.ns.cloudflare.com, roxy.ns.cloudflare.com
TXT
google-site-verification=_UymNBodbgtmLPT63pJYFvyw1zO3bzLZEY-cLEVEGhs, google-site-verification=fW3mBFuNe4Az29d7aTmyeWfPtQqHwCgtV5PwsBxNHLw, google-site-verification=skhhgLqcdidjeO39qmJ0PIjb7wGY4LlUoNnpSVLf2bk, v=spf1 include:mailgun.org include:_spf.google.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

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
api.opencollective.com 2026-05-26 18:32:24.571
images.opencollective.com 2026-07-25 20:57:46.434
ml.opencollective.com 2026-06-03 09:33:13.661
opencollective.com 2026-07-28 03:51:42.571
pdf-staging.opencollective.com 2026-07-21 10:20:36.022
pricing-2026.opencollective.com 2026-06-17 04:55:15.683
styleguide.opencollective.com 2026-06-21 06:27:57.185
www.styleguide.opencollective.com 2026-06-21 03:51:12.499
docs-internal.opencollective.com 2026-07-24 18:31:20.377
documentation.opencollective.com 2026-06-15 12:38:44.590
api-staging-direct.opencollective.com
1970-01-01 00:00:00.000
docs.opencollective.com
1970-01-01 00:00:00.000
mastodon.opencollective.com
1970-01-01 00:00:00.000
pdf-v2.opencollective.com
1970-01-01 00:00:00.000
translate.opencollective.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

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

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
TXT v=spf1 include:mailgun.org include:_spf.google.com ~all 2026-05-26 03:19:32.089 2026-07-28 03:51:42.571
NS roxy.ns.cloudflare.com 2026-05-26 03:19:32.089 2026-07-28 03:51:42.571
A 104.26.13.145 2026-05-26 03:19:32.089 2026-07-28 03:51:42.571
AAAA 2606:4700:20::681a:c91 2026-05-26 03:19:32.089 2026-07-28 03:51:42.571
TXT google-site-verification=_UymNBodbgtmLPT63pJYFvyw1zO3bzLZEY-cLEVEGhs 2026-05-26 03:19:32.089 2026-07-28 03:51:42.571
TXT google-site-verification=fW3mBFuNe4Az29d7aTmyeWfPtQqHwCgtV5PwsBxNHLw 2026-05-26 03:19:32.089 2026-07-28 03:51:42.571
NS pablo.ns.cloudflare.com 2026-05-26 03:19:32.089 2026-07-28 03:51:42.571
A 104.26.12.145 2026-05-26 03:19:32.089 2026-07-28 03:51:42.571
AAAA 2606:4700:20::681a:d91 2026-05-26 03:19:32.089 2026-07-28 03:51:42.571
MX 5 alt2.aspmx.l.google.com 2026-05-26 03:19:32.089 2026-07-28 03:51:42.571
MX 10 alt4.aspmx.l.google.com 2026-05-26 03:19:32.089 2026-07-28 03:51:42.571
MX 1 aspmx.l.google.com 2026-05-26 03:19:32.089 2026-07-28 03:51:42.571
AAAA 2606:4700:20::ac43:471d 2026-05-26 03:19:32.089 2026-07-28 03:51:42.571
MX 5 alt1.aspmx.l.google.com 2026-05-26 03:19:32.089 2026-07-28 03:51:42.571
TXT google-site-verification=skhhgLqcdidjeO39qmJ0PIjb7wGY4LlUoNnpSVLf2bk 2026-05-26 03:19:32.089 2026-07-28 03:51:42.571
MX 10 alt3.aspmx.l.google.com 2026-05-26 03:19:32.089 2026-07-28 03:51:42.571
A 172.67.71.29 2026-05-26 03:19:32.089 2026-07-28 03:51:42.571