`captcha.com`

DNSSEC	⚠️ Not signed
A	46.4.221.230^{🇩🇪 Hetzner46.4.0.0/16 HETZNER-RZ-FKS-BLK3}
		PTR	`smtp.captcha.com`
NS	`hydrogen.ns.hetzner.com` ⭐
		A	2a01:4f8:0:1::add:1098^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`hydrogen.ns.hetzner.com`
		A	213.133.100.98^{🇩🇪 Hetzner213.133.96.0/19 HETZNER-RZ-NBG-BLK1}
			PTR	`hydrogen.ns.hetzner.com`
NS	`helium.ns.hetzner.de`
		A	2001:67c:192c::add:5^{🇩🇪 NORIS-NETWORK2001:67c:192c::/48}
			PTR	`helium.ns.hetzner.de`
		A	193.47.99.5^{🇩🇪 NORIS-NETWORK193.47.99.0/24}
			PTR	`helium.ns.hetzner.de`
NS	`oxygen.ns.hetzner.com`
		A	2a01:4f8:0:1::add:2992^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`oxygen.ns.hetzner.com`
		A	88.198.229.192^{🇩🇪 Hetzner88.198.0.0/16 HETZNER-RZ-NBG-BLK4}
			PTR	`oxygen.ns.hetzner.com`
MX	`smtp.captcha.com` ⭐
		A	46.4.221.230^{🇩🇪 Hetzner46.4.0.0/16 HETZNER-RZ-FKS-BLK3}
			PTR	`smtp.captcha.com`
TXT	`v=spf1 mx a:captcha.com ip4:46.4.221.230 include:spf.protection.outlook.com ...`
TXT	`ms-domain-verification=01836b28-3157-4bd6-85a5-662829e47dbd`
SOA	`hydrogen.ns.hetzner.com`dns@hetzner.com 2026-02-09 #1

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1776985156

rank #316455 globally
rank #134955 in the tld
WOT: SAFE (38/100)
📈 Tranco rank: #60,699

Subdomains

www.captcha.com

mail.captcha.com

remote.captcha.com

smtp.captcha.com

Same first word

captcha.ru

captcha.autos

captcha.hu

captcha.biz

captcha.at

captcha.org

captcha.run

captcha.com.co

captcha.today

captcha.webredirect.org

captcha.la

captcha.li

captcha.fr

captcha.work

captcha.cn

captcha.im

captcha.cloud

captcha.bar

captcha.cz

captcha.ca

captcha.me

captcha.fun

captcha.directory

captcha.tv

captcha.com

captcha.site

captcha.edgecompute.app

captcha.us

captcha.es

captcha.guru

captcha.ws

captcha.de

captcha.surf

captcha.wtf

captcha.eu

captcha.tools

captcha.com.vn

captcha.pics

captcha.page

captcha.vn

captcha.nl

captcha.jp

captcha.in.net

captcha.cool

captcha.money

captcha.cc

captcha.club

captcha.pro

captcha.hk

captcha.net

captcha.se

captcha.asia

captcha.one

captcha.win

captcha.it

captcha.in

captcha.ro

captcha.co

captcha.bot

captcha.zip

captcha.id

captcha.lat

captcha.chat

captcha.cl

captcha.quest

captcha.pl

captcha.blue

Similar names

cathcap.com

capchat.com

chatcap.com

chatcpa.com

cpachat.net

pcachat.com

pcachat.fr

chatcap.in

achatpc.fr

pacchat.com

pacatch.com

achatpc.com

cpachat.com

pcachat.net

DNS History

16 records (5 active, 11 former)

●NShelium.ns.hetzner.de2026-02-16 → 2026-04-23 · 3 obs

○ 2019-06-17 07:20:48
● 2026-02-16 08:59:14
● 2026-04-23 23:14:20

●NShydrogen.ns.hetzner.com2026-02-16 → 2026-04-23 · 3 obs

○ 2019-06-17 07:20:48
● 2026-02-16 08:59:14
● 2026-04-23 23:14:20

○NSns1.misk.com2015-07-18 → 2019-06-17 · 4 obs

● 2015-07-18 03:49:10
● 2019-06-17 07:20:48
○ 2026-02-16 08:59:14
○ 2026-04-23 23:14:20

○NSns2.misk.com2015-07-18 → 2019-06-17 · 4 obs

● 2015-07-18 03:49:10
● 2019-06-17 07:20:48
○ 2026-02-16 08:59:14
○ 2026-04-23 23:14:20

●NSoxygen.ns.hetzner.com2026-02-16 → 2026-04-23 · 3 obs

○ 2019-06-17 07:20:48
● 2026-02-16 08:59:14
● 2026-04-23 23:14:20

○MXalt1.aspmx.l.google.com2015-07-18 → 2019-06-17 · 4 obs

● 2015-07-18 03:49:10
● 2019-06-17 07:20:48
○ 2026-02-16 08:59:14
○ 2026-04-23 23:14:20

○MXalt2.aspmx.l.google.com2015-07-18 → 2019-06-17 · 4 obs

● 2015-07-18 03:49:10
● 2019-06-17 07:20:48
○ 2026-02-16 08:59:14
○ 2026-04-23 23:14:20

○MXaspmx.l.google.com2015-07-18 → 2019-06-17 · 4 obs

● 2015-07-18 03:49:10
● 2019-06-17 07:20:48
○ 2026-02-16 08:59:14
○ 2026-04-23 23:14:20

○MXaspmx2.googlemail.com2015-07-18 → 2019-06-17 · 4 obs

● 2015-07-18 03:49:10
● 2019-06-17 07:20:48
○ 2026-02-16 08:59:14
○ 2026-04-23 23:14:20

○MXaspmx3.googlemail.com2015-07-18 → 2019-06-17 · 4 obs

● 2015-07-18 03:49:10
● 2019-06-17 07:20:48
○ 2026-02-16 08:59:14
○ 2026-04-23 23:14:20

○MXaspmx4.googlemail.com2015-07-18 → 2019-06-17 · 4 obs

● 2015-07-18 03:49:10
● 2019-06-17 07:20:48
○ 2026-02-16 08:59:14
○ 2026-04-23 23:14:20

○MXaspmx5.googlemail.com2015-07-18 → 2019-06-17 · 4 obs

● 2015-07-18 03:49:10
● 2019-06-17 07:20:48
○ 2026-02-16 08:59:14
○ 2026-04-23 23:14:20

●MXsmtp.captcha.com2026-02-16 → 2026-04-23 · 3 obs

○ 2019-06-17 07:20:48
● 2026-02-16 08:59:14
● 2026-04-23 23:14:20

○A178.63.240.2202019-06-17 → 2019-06-17 · 4 obs

○ 2018-01-11 19:34:22
● 2019-06-17 07:20:48
○ 2026-02-16 08:59:14
○ 2026-04-23 23:14:20

○A188.40.113.2352015-07-18 → 2018-01-11 · 4 obs

● 2015-07-18 03:49:10
● 2018-01-11 19:34:22
○ 2019-06-17 07:20:48
○ 2026-04-23 23:14:20

●A46.4.221.2302026-02-16 → 2026-04-23 · 3 obs

○ 2019-06-17 07:20:48
● 2026-02-16 08:59:14
● 2026-04-23 23:14:20

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
captcha.com	helium.ns.hetzner.de, hydrogen.ns.hetzner.com, oxygen.ns.hetzner.com	2 records

✅ Authoritative Response

Server:193.47.99.5

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for captcha.com (unsigned zone)

⏱️ Timing

Total: 2742ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`46.4.221.230`
NS	3	`oxygen.ns.hetzner.com, helium.ns.hetzner.de...`
MX	1	`smtp.captcha.com (pri: 10)`
TXT	2	`ms-domain-verification=01836b28-3157-4bd, v=spf1 mx a:captcha.com ip4:46.4.221.230`
SOA	1	`hydrogen.ns.hetzner.com dns.hetzner.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (hydrogen.ns.hetzner.com, oxygen.ns.hetzner.com)

Analysis

Hierarchy

captcha.com is a parent of www.captcha.com, mail.captcha.com, remote.captcha.com and smtp.captcha.com.

IP Addresses

captcha.com points to a single IP address: 46.4.221.230.

Other host names such as captcha.biz, smtp.captcha.com, www.captcha.com and www.captcha.biz share IP numbers with captcha.com.

Name Servers

captcha.com is delegated to three name servers: hydrogen.ns.hetzner.com, oxygen.ns.hetzner.com and helium.ns.hetzner.de.

captcha.com at least partially shares name servers with other domains, for example bau.bi, admin-interface.de, belweb.de, altenburg.me and soulwar.org.

These name servers are commonly used with ns1.first-ns.de and robotns2.second-ns.de and robotns3.second-ns.com.

Host names with two IP numbers:

hydrogen.ns.hetzner.com points to 2a01:4f8:0:1::add:1098 and 213.133.100.98

oxygen.ns.hetzner.com points to 2a01:4f8:0:1::add:2992 and 88.198.229.192

helium.ns.hetzner.de points to 2001:67c:192c::add:5 and 193.47.99.5

Mail Servers

The smtp.captcha.com mail server handles captcha.com.

The mail server setup for captcha.com is the same as that of other domains, for instance lanapsoft.com.

smtp.captcha.com points to a single IP number: 46.4.221.230.

captcha.com - robtex.com

captcha.com

com

Subdomains

Same first word

Similar names

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`captcha.com`

`com`