`directbookpro.com`

DNSSEC	⚠️ Not signed
A	136.243.133.73^{🇩🇪 Hetzner136.243.0.0/16 HETZNER-RZ-BLK-ERX3}
		PTR	`static.73.133.243.136.clients.your-server.de`
NS	`ns1.first-ns.de` ⭐
		A	2a01:4f8:0:a101::a:1^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`ns1.first-ns.de`
		A	213.239.242.238^{🇩🇪 Hetzner213.239.192.0/18 HETZNER-RZ-NBG-BLK2}
			PTR	`ns1.first-ns.de`
NS	`robotns2.second-ns.de`
		A	2a01:4f8:0:1::5ddc:2^{🇩🇪 Hetzner2a01:4f8::/32 HETZNER-IPv6-BLK}
			PTR	`robotns2.second-ns.de`
		A	213.133.100.103^{🇩🇪 Hetzner213.133.96.0/19 HETZNER-RZ-NBG-BLK1}
			PTR	`robotns2.second-ns.de`
NS	`robotns3.second-ns.com`
		A	2001:67c:192c::add:a3^{🇩🇪 NORIS-NETWORK2001:67c:192c::/48}
			PTR	`robotns3.second-ns.com`
		A	193.47.99.3^{🇩🇪 NORIS-NETWORK193.47.99.0/24}
			PTR	`robotns3.second-ns.com`
MX	`mail.directbookpro.com` ⭐
		A	136.243.133.73^{🇩🇪 Hetzner136.243.0.0/16 HETZNER-RZ-BLK-ERX3}
			PTR	`static.73.133.243.136.clients.your-server.de`
TXT	`google-site-verification=1YqGUhPDZS3ht72N1HKdf0LvIPjJTNo5D1yukwYJ0_U`
SOA	`ns1.first-ns.de`dns@hetzner.com 2025-10-13 #0

`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=1776202047

Previously MX for

directbookpro.com

Subdomains

mail.directbookpro.com

Same first word

directbookpro.com

directbookpro.de

DNS History

10 records (5 active, 5 former)

●NSns1.first-ns.de2016-09-19 → 2026-04-14 · 3 obs

○ 2016-04-08 03:23:40
● 2016-09-19 22:16:54
● 2026-04-14 21:52:24

○NSns65.1und1.de2015-06-13 → 2016-04-08 · 4 obs

● 2015-06-13 01:10:06
● 2016-04-08 03:23:40
○ 2016-09-19 22:16:54
○ 2026-04-14 21:52:24

○NSns66.1und1.de2015-06-13 → 2016-04-08 · 4 obs

● 2015-06-13 01:10:06
● 2016-04-08 03:23:40
○ 2016-09-19 22:16:54
○ 2026-04-14 21:52:24

●NSrobotns2.second-ns.de2016-09-19 → 2026-04-14 · 3 obs

○ 2016-04-08 03:23:40
● 2016-09-19 22:16:54
● 2026-04-14 21:52:24

●NSrobotns3.second-ns.com2016-09-19 → 2026-04-14 · 3 obs

○ 2016-04-08 03:23:40
● 2016-09-19 22:16:54
● 2026-04-14 21:52:24

○MXdirectbookpro.com2015-06-13 → 2016-04-08 · 4 obs

● 2015-06-13 01:10:06
● 2016-04-08 03:23:40
○ 2016-09-19 22:16:54
○ 2026-04-14 21:52:24

●MXmail.directbookpro.com2016-09-19 → 2026-04-14 · 3 obs

○ 2016-04-08 03:23:40
● 2016-09-19 22:16:54
● 2026-04-14 21:52:24

○MXmx01.kundenserver.de2015-06-13 → 2016-04-08 · 4 obs

● 2015-06-13 01:10:06
● 2016-04-08 03:23:40
○ 2016-09-19 22:16:54
○ 2026-04-14 21:52:24

●A136.243.133.732026-04-14 → 2026-04-14 · 3 obs

○ 2017-04-20 20:22:40
● 2026-04-14 19:49:40
● 2026-04-14 21:52:24

○A87.106.5.982015-06-13 → 2017-04-20 · 4 obs

● 2015-06-13 01:10:06
● 2017-04-20 20:22:40
○ 2026-04-14 19:49:40
○ 2026-04-14 21:52:24

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, d.gtld-servers.net, k.gtld-servers.net, m.gtld-servers.net...	-
directbookpro.com	ns1.first-ns.de, robotns2.second-ns.de, robotns3.second-ns.com	2 records

✅ Authoritative Response

Server:193.47.99.3

NS records: ns1.first-ns.de, robotns2.second-ns.de, robotns3.second-ns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for directbookpro.com (unsigned zone)

⏱️ Timing

Total: 3892ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`136.243.133.73`
NS	3	`ns1.first-ns.de, robotns2.second-ns.de...`
MX	1	`mail.directbookpro.com (pri: 10)`
TXT	1	`google-site-verification=1YqGUhPDZS3ht72`
SOA	1	`ns1.first-ns.de dns.hetzner.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (robotns3.second-ns.com, robotns3.second-ns.com)

Analysis

Hierarchy

directbookpro.com is the parent of mail.directbookpro.com.

IP Addresses

directbookpro.com points to IP number 136.243.133.73.

For instance, other host names mail.directbookpro.com, hydrobar.eu, directbookpro.de, mail.directbookpro.de and franchiseforyou.net share IP numbers with directbookpro.com.

Name Servers

The delegation for directbookpro.com is handled by three name servers: robotns3.second-ns.com, ns1.first-ns.de and robotns2.second-ns.de.

directbookpro.com shares name servers with other domains at least partially, for example cathyouthadult.org, samavayo.com, volpe-it.de, mirohost.de and zoonomen.org.

These name servers are commonly used with hydrogen.ns.hetzner.com.

Host names with two IPs:

robotns3.second-ns.com points to 2001:67c:192c::add:a3 and 193.47.99.3

ns1.first-ns.de points to 2a01:4f8:0:a101::a:1 and 213.239.242.238

robotns2.second-ns.de points to 2a01:4f8:0:1::5ddc:2 and 213.133.100.103

Mail Servers

directbookpro.com is handled by a single mail server, mail.directbookpro.com.

mail.directbookpro.com points to a single IP: 136.243.133.73.

directbookpro.com - robtex.com