mail.captcha.org - robtex.com

mail.captcha.org

DNSSEC⚠️ Not signed
A178.63.240.220🇩🇪 Hetzner178.63.0.0/16 HETZNER-RZ-FKS-BLK2
PTRstatic.220.240.63.178.clients.your-server.de

captcha.org

DNSSEC⚠️ Not signed
A188.40.246.97🇩🇪 Hetzner188.40.0.0/16 HETZNER-RZ-FKS-BLK1
NShydrogen.ns.hetzner.com ⭐
NShelium.ns.hetzner.de
NSoxygen.ns.hetzner.com
MXmail.captcha.org ⭐
SOAhydrogen.ns.hetzner.comdns@hetzner.com 2026-02-08 #0
WOT: SAFE (61/100)
rank #23217 globally
rank #2499 in the tld
WOT: SAFE (63/100)
📈 Tranco rank: #101,088

MX for

captcha.org

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DNS History

2 records (1 active, 1 former)

2017201820192020202120222023202420252026A178.63.240.220188.40.113.235
●A178.63.240.2202026-03-11 → 2026-03-11 · 3 obs
○ 2016-12-28 20:23:00
● 2026-03-11 17:35:06
● 2026-03-11 17:35:08
○A188.40.113.2352016-12-28 → 2016-12-28 · 3 obs
● 2016-12-28 20:23:00
○ 2026-03-11 17:35:06
○ 2026-03-11 17:35:08

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
orgb0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org-
captcha.orghelium.ns.hetzner.de, hydrogen.ns.hetzner.com, oxygen.ns.hetzner.com-

✅ Authoritative Response

Server: 88.198.229.192

NS records: helium.ns.hetzner.de, hydrogen.ns.hetzner.com, oxygen.ns.hetzner.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for captcha.org (unsigned zone)

⏱️ Timing

Total: 3094ms | Queries: -

📄 Records

TypeCountSample Data
A1178.63.240.220

Analysis

Mail Server Role

mail.captcha.org functions as a mail server for captcha.org.

IP Addresses

mail.captcha.org points to IP number: 178.63.240.220.

Other host names, for instance static.220.240.63.178.clients.your-server.de share IP numbers with mail.captcha.org.