Check-Host.cc

Domain

firstcolo.net

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

Run a live full scan of firstcolo.net

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
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

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

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 bw=3evRKz7oUgNwr7BkmOlMbefM6t1iaFbSowfdNncREZSd 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT bw=nQEw5hTENqRKOrbKxmfdHhRSkT5i5KZ9XfQh9ojFTK5S 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
A 212.224.84.56 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT hibp-verify=dweb_u357ied72n78mpyt3r0wbcr2 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT _82fo2o7s82gtwxf3edg9ycl2528uv54 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT apple-domain-verification=YQNPavhrm4dwowpZ 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT hubspot-domain-verification=YjE3ODI1MDItYTU3Yi00NzI1LTk1MzMtMGI2YjA1NjVjMjhj 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
NS ns01.first-colo.net 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT MS=ms41149736 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT apple-domain-verification=pw82Dzyby1tHoCi6 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT MS=ms44547105 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT atlassian-domain-verification=raFp146JYr0MI5F8Wt4Xm4rkwu1dSMJ6v6CJdbaAN5d8hs4rYnKAeQ54Y3dw8OUN 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT _viryv84ajx8l04ocfvwerzv2moolkvh 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT _q1rcftslw9v9zoaxuql7v8tch7gk9py 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT linkedin-site-verification=b5b7e137-3d0e-4d85-96b8-6ffe8164b1f7 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT bw=fXgxk8f14mFKv0BlzU6CjeV66cnhrYPAlP3pkq25gFJQ 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT rghfmrn36p42xr7f3zjyfyt60x7g3xwv 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT hibp-verify=dweb_rf009pn23wfbhqkfxlp859m6 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT _5jkbfvu697o31wdewpty0nxqchcq5gf 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT 37ryy8lmzhdwp329f25v7g8ygdqpdv0m 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
NS ns02.first-colo.net 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT 1mpypcgbvn0yzm9q8r1gbz5vw81xcryp 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT _y9ltggzb4quiyg08mm6mezpg9ci1rjk 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT n3j8gx426x9nwq6p9qhd86gxrhf3ddxq 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
MX 10 pmg01.first-colo.net 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT adobe-idp-site-verification=104ff019f38f9a91f8846120df054e6c9cbf8c0f6f722458fcc3fe0db36dfd86 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
AAAA 2a01:7e0:fc:1:212:224:84:56 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT 2w56n3sb6c8jjtwc93hz17pd8snth8n9 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT _4snw9r2kc05oj8z35b83pxgpe6m82t5 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT vkjfgd71bjf2t1l09rhvg6wptzh7wzsd 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT ytm6907dx94y49lx1zts8x38ckmstw26 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT _gr71mfgpig9auvdm7d28dr66bs9gm28 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT google-site-verification=HBa1BepW0p_bhtI5gW9VId2w37-pWuc28InwHyxkSzw 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT _ppi3u5r3hu8mc4g63ij7vdg4hbpyay5 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT v=spf1 include:_spf4.firstcolo.net include:_spf6.firstcolo.net include:mailgun.org a:mx02.firstcolo.net include:spf.protection.outlook.com include:146015476.spf03.hubspotemail.net ~all 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT xsggsxhrqzrghbh4kkm3g98dzs4y0j01 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT _xkssni0dgviucicd5bkh0pdzdgrdyd6 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT _giq36o7rtrcb54dap7dis2xy4j0l4ff 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
SRV _autodiscover._tcp 5 10 443 autodiscover.first-colo.net 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT hibp-verify=dweb_kzosmr9ccec92k0ixcicw3ue 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT s9gdnrjhdg5mtrmqlmykhlvcjcsh2rw1 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT bw=f5k0qRXt3YcgUIz7z2tXNlYoq4Q4K8EQ91JZy11hL6Cj 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT _4ujgy4d3jsvv85yzxgx1yonzmw1ajb6 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT 1vnvmjmr9wwpn3y6c3cz21nl7n4bbs69 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
TXT 6dbp62w5pqd36238vrx674pmpj7f2h8c 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710
MX 20 pmg02.first-colo.net 2026-07-17 16:54:35.710 2026-07-17 16:54:35.710