Check-Host.cc

Domain

calendarserver.org

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

Run a live full scan of calendarserver.org

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
21
A/AAAA targets
Subdomains
12
CT + scan + body
Record Types
5
seen in DNS
Observed Certs
6
in our scans

DNS Records

A
17.253.23.201, 17.253.23.202
AAAA
MX
10 mx-in.g.apple.com, 20 mx-in-hfd.apple.com, 20 mx-in-mdn.apple.com, 20 mx-in-rno.apple.com, 20 mx-in-vib.apple.com
NS
a.ns.apple.com, b.ns.apple.com, c.ns.apple.com, d.ns.apple.com
TXT
t61y0q619sp6jsplsfbbqjy9v6vpfw07, v=spf1 -all
CNAME
CAA
0 iodef "mailto:contact_pki@apple.com", 0 issue "pki.apple.com", 0 issuewild "pki.apple.com"

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.

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

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

110.92.2.253:8008 href · ×2
136.232.0.130:8008 href · ×1
77.11.131.97:8443 href · ×1
185.68.145.159:8443 href · ×1
46.124.38.2:8443 href · ×1
77.7.170.157:8443 href · ×1
111.76.45.204:8008 href · ×1
93.245.182.147:8008 href · ×1
80.146.4.53:8008 href · ×1
210.103.118.253:8443 href · ×1
46.223.96.52:8443 href · ×1
82.66.45.235:8443 href · ×1
217.80.93.210:8443 href · ×1
83.135.85.225:8443 href · ×1
3.231.254.190:8443 href · ×1
109.148.180.177:8443 href · ×1
86.247.202.145:8443 href · ×1
178.77.217.34:8008 href · ×1
70.15.184.186:8443 href · ×1
178.198.44.248:8008 href · ×1
3.0.88.49:8443 href · ×1
149.172.28.206:8443 href · ×1
115.217.213.175:8443 href · ×1
81.217.190.39:8008 href · ×1
79.116.69.90:8443 href · ×1
129.153.93.213:443 href · ×1
80.131.53.191:8443 href · ×1
219.78.133.204:8008 href · ×1
193.87.78.202:8443 href · ×1
91.248.17.169:8443 href · ×1
89.89.42.71:8008 href · ×1
46.142.182.88:8443 href · ×1
98.148.24.240:8443 href · ×1
141.57.122.69:8443 href · ×1
90.68.192.155:8008 href · ×1
80.58.142.203:8008 href · ×1
123.192.42.30:8008 href · ×1
66.242.84.174:8008 href · ×1
93.235.62.246:8443 href · ×1
87.74.66.137:8443 href · ×1
222.252.21.159:8443 href · ×1
112.170.158.106:8443 href · ×1
178.38.108.232:8443 href · ×1
92.38.235.250:8443 href · ×1
222.140.33.39:8008 href · ×1
175.115.207.224:8443 href · ×1
114.32.75.50:8008 href · ×1
188.136.70.224:8443 href · ×1
37.24.137.227:8443 href · ×1
91.33.16.112:8443 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 v=spf1 -all 2026-05-26 12:19:08.814 2026-07-28 20:23:38.809
TXT t61y0q619sp6jsplsfbbqjy9v6vpfw07 2026-05-26 12:19:08.814 2026-07-28 20:23:38.809
NS c.ns.apple.com 2026-05-26 12:19:08.814 2026-07-28 20:23:38.809
MX 20 mx-in-rno.apple.com 2026-05-26 12:19:08.814 2026-07-28 20:23:38.809
A 17.253.23.201 2026-05-26 12:19:08.814 2026-07-28 20:23:38.809
MX 20 mx-in-mdn.apple.com 2026-05-26 12:19:08.814 2026-07-28 20:23:38.809
CAA 0 issuewild "pki.apple.com" 2026-05-26 12:19:08.814 2026-07-28 20:23:38.809
NS a.ns.apple.com 2026-05-26 12:19:08.814 2026-07-28 20:23:38.809
CAA 0 iodef "mailto:contact_pki@apple.com" 2026-05-26 12:19:08.814 2026-07-28 20:23:38.809
NS b.ns.apple.com 2026-05-26 12:19:08.814 2026-07-28 20:23:38.809
CAA 0 issue "pki.apple.com" 2026-05-26 12:19:08.814 2026-07-28 20:23:38.809
NS d.ns.apple.com 2026-05-26 12:19:08.814 2026-07-28 20:23:38.809
A 17.253.23.202 2026-05-26 12:19:08.814 2026-07-28 20:23:38.809
MX 10 mx-in.g.apple.com 2026-05-26 12:19:08.814 2026-07-28 20:23:38.809
MX 20 mx-in-hfd.apple.com 2026-05-26 12:19:08.814 2026-07-28 20:23:38.809
MX 20 mx-in-vib.apple.com 2026-05-26 12:19:08.814 2026-07-28 20:23:38.809