`bookstack.com`

DNSSEC	⚠️ Not signed
NS	`ns-east.cerf.net` ⚠️ Not in zone NS records
		A	2001:1890:1ff:9f1:99:99:99:136^{🇺🇸 AS70182001:1890::/29 AT&T Enterprises, LLC}
			PTR	`ns-east.cerf.net`
		A	99.99.99.136^{🇺🇸 AS701899.96.0.0/13 AT&T Enterprises, LLC}
			PTR	`ns-east.cerf.net`
NS	`ns-west.cerf.net` ⚠️ Not in zone NS records
		A	2001:1890:1ff:9f0:68:94:156:136^{🇺🇸 AS70182001:1890::/29 AT&T Enterprises, LLC}
			PTR	`ns-west.cerf.net`
		A	68.94.156.136^{🇺🇸 AS701868.88.0.0/13 ARIN Allocation SBC Internet Services}
			PTR	`ns-west.cerf.net`

`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=1778377011

Same first word

bookstack.cn

bookstack.org

bookstack.co

bookstack.ru

bookstack.io

bookstack.dev

bookstack.in

bookstack.com

bookstack.net

bookstack.info

bookstack.jp

bookstack.fm

DNS History

2 records (2 active, 0 former)

●NSns-east.cerf.net2007-10-23 → 2026-05-10 · 4 obs

● 2007-10-23 01:29:48
○ 2015-06-27 06:43:06
● 2026-02-22 18:30:40
● 2026-05-10 01:37:26

●NSns-west.cerf.net2007-10-23 → 2026-05-10 · 4 obs

● 2007-10-23 01:29:48
○ 2015-06-27 06:43:06
● 2026-02-22 18:30:40
● 2026-05-10 01:37:26

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
bookstack.com	ns-east.cerf.net, ns-west.cerf.net	-

✅ Authoritative Response

Server:68.94.156.136

NS records: ns-east.cerf.net, ns-west.cerf.net

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for bookstack.com (unsigned zone)

⏱️ Timing

Total: 420ms | Queries: -

📄 Records

Type	Count	Sample Data

Analysis

Name Servers

bookstack.com is delegated to two name servers: ns-east.cerf.net and ns-west.cerf.net.

bookstack.com uses the same name server setup as other domains, for instance 110.240.63.in-addr.arpa, 19.17.206.in-addr.arpa, 193.129.12.in-addr.arpa, 60.148.216.in-addr.arpa and nyc.attens.net.

bookstack.com shares name servers with other domains at least partially, for instance piratebeisbol.com, vplays.com, congressionals.com, logout.com and uptodateonline.com.

these name servers are commonly used with the name servers ns6.customer.level3.net, ns9.customer.level3.net, eur7.akam.net, ns1-116.akam.net, ns1-223.akam.net, use10.akam.net, use6.akam.net, usw1.akam.net, usw2.akam.net and usw6.akam.net.

Host names with two IP numbers:

The host ns-east.cerf.net points to 2001:1890:1ff:9f1:99:99:99:136 and 99.99.99.136.

The host ns-west.cerf.net points to 2001:1890:1ff:9f0:68:94:156:136 and 68.94.156.136.

bookstack.com - robtex.com

bookstack.com

com