api.open.cx - robtex.com

api.open.cx

DNSSEC⚠️ Not signed
A2606:4700:3030::ac43:d3c0🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::6815:55dd🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.85.221Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.211.192🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.85.221, 172.67.211.192
IPv62606:4700:3030::ac43:d3c0, 2606:4700:3037::6815:55dd

open.cx

DNSSEC⚠️ Not signed
A216.150.1.1🇨🇦 Amazon216.150.1.0/24 EC2 Prefix
NSiris.ns.cloudflare.com ⭐
NSsergi.ns.cloudflare.com
MXaspmx.l.google.com ⭐
MXalt1.aspmx.l.google.com(5)
MXalt2.aspmx.l.google.com(5)
MXalt3.aspmx.l.google.com(10)
MXalt4.aspmx.l.google.com(10)
TXTMS=ms68943264
TXTgoogle-site-verification=NjxHplnwRfibWex-wQVC997b019uE9e0WKnkcvBNIow
TXTgoogle-site-verification=_CtNOtL6iErVJX-zqbSmzEG4bC1-38rFo9mfL_9XJp8
TXThubspot-developer-verification=OGM2YmY1ZmItN2E2NS00MjUxLWJhNWQtNmNkZWMzZmY1ZmY1
TXToneleet-domain-verification-d4d2109e-1855-4ea0-bf8a-241cc84e3c2c
TXTv=spf1 include:_spf.google.com include:47743622.spf04.hubspotemail.net ~all
SOAiris.ns.cloudflare.comdns@cloudflare.com serial=2398848471
📈 Tranco rank: #99,724

Same first word

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DNS History

6 records (4 active, 2 former)

A104.21.85.221172.67.211.1922606:4700:3030::ac43:d3c02606:4700:3037::6815:55dd172.64.80.12606:4700:130:436c:6f75:6466:6c61:7265
●A104.21.85.2212026-02-27 → 2026-03-26 · 5 obs
● 2026-02-27 01:47:10
● 2026-03-11 05:50:50
○ 2026-03-11 22:42:50
● 2026-03-12 02:33:26
● 2026-03-26 09:45:54
○A172.64.80.12026-03-11 → 2026-03-11 · 4 obs
○ 2026-03-11 05:50:50
● 2026-03-11 22:42:50
○ 2026-03-12 02:33:26
○ 2026-03-26 09:45:54
●A172.67.211.1922026-02-27 → 2026-03-26 · 5 obs
● 2026-02-27 01:47:10
● 2026-03-11 05:50:50
○ 2026-03-11 22:42:50
● 2026-03-12 02:33:26
● 2026-03-26 09:45:54
○A2606:4700:130:436c:6f75:6466:6c61:72652026-03-11 → 2026-03-11 · 4 obs
○ 2026-03-11 05:50:50
● 2026-03-11 22:42:50
○ 2026-03-12 02:33:26
○ 2026-03-26 09:45:54
●A2606:4700:3030::ac43:d3c02026-02-27 → 2026-03-26 · 5 obs
● 2026-02-27 01:47:10
● 2026-03-11 05:50:50
○ 2026-03-11 22:42:50
● 2026-03-12 02:33:26
● 2026-03-26 09:45:54
●A2606:4700:3037::6815:55dd2026-02-27 → 2026-03-26 · 5 obs
● 2026-02-27 01:47:10
● 2026-03-11 05:50:50
○ 2026-03-11 22:42:50
● 2026-03-12 02:33:26
● 2026-03-26 09:45:54

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cxns.anycast.nic.cx, ns1.anycastdns.cz, ns2.anycastdns.cz5 records
open.cxiris.ns.cloudflare.com, sergi.ns.cloudflare.com-

✅ Authoritative Response

Server:108.162.195.68

NS records: iris.ns.cloudflare.com, sergi.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for open.cx (unsigned zone)

⏱️ Timing

Total: 497ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.211.192, 104.21.85.221
AAAA22606:4700:3030::ac43:d3c0, 2606:4700:3037::6815:55dd
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 5

In-bailiwick: 2 (ns.anycast.nic.cx, ns.anycast.nic.cx)

Out-of-bailiwick: 3 (ns1.anycastdns.cz, ns1.anycastdns.cz, ns2.anycastdns.cz)

Analysis

IP Addresses

api.open.cx refers to four IP numbers: 2606:4700:3030::ac43:d3c0, 2606:4700:3037::6815:55dd, 104.21.85.221 and 172.67.211.192.

Other host names, for instance kafuture.com, prekcafe.com, anfforum.com, abkb.co.uk and www.british-(0x62756b6b616b65).com share IP numbers with api.open.cx.