`firstchapterbook.com`

DNSSEC	⚠️ Not signed
A	3.33.139.32^{🇺🇸 Amazon3.33.128.0/20}
NS	`ns1.markmonitor.com` ⭐
		A	2620:10a:80a8::1^{🇨🇦 CIRA-22620:10a:80a8::/48 markmonitor v6 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
		A	149.112.160.1^{🇨🇦 CIRA-2149.112.160.0/24 markmonitor v4 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
NS	`ns2.markmonitor.com`
		A	2001:67c:10b8::1^{🇨🇭 RCODEZERO-ANYCAST-SEC22001:67c:10b8::/48 IPCOM-anycast-net}
			PTR	`ns2.markmonitor.com`
		A	176.97.158.1^{🇦🇹 RCODEZERO-ANYCAST-SEC2176.97.158.0/24 NICat-anycast-net}
			PTR	`ns2.markmonitor.com`
NS	`ns3.markmonitor.com`
		A	2620:10a:80a9::1^{🇨🇦 CIRA-32620:10a:80a9::/48 markmonitor v6 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
		A	149.112.161.1^{🇨🇦 CIRA-3149.112.161.0/24 markmonitor v4 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
NS	`ns4.markmonitor.com`
		A	2001:67c:1bc::1^{🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD2001:67c:1bc::/48 IPCom-NET Anycast}
			PTR	`ns1.markmonitor.com`
		A	192.174.68.1^{🇦🇹 RCODEZERO-ANYCAST-SEC1-TLD192.174.68.0/24 NICat-anycast-net}
			PTR	`ns1.markmonitor.com`
NS	`ns5.markmonitor.com`
		A	2620:10a:80a8::2^{🇨🇦 CIRA-22620:10a:80a8::/48 markmonitor v6 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
		A	149.112.160.2^{🇨🇦 CIRA-2149.112.160.0/24 markmonitor v4 cloud1 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
NS	`ns6.markmonitor.com`
		A	2001:67c:10b8::3^{🇨🇭 RCODEZERO-ANYCAST-SEC22001:67c:10b8::/48 IPCOM-anycast-net}
			PTR	`ns6.markmonitor.com`
		A	176.97.158.3^{🇦🇹 RCODEZERO-ANYCAST-SEC2176.97.158.0/24 NICat-anycast-net}
NS	`ns7.markmonitor.com`
		A	2620:10a:80a9::2^{🇨🇦 CIRA-32620:10a:80a9::/48 markmonitor v6 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
		A	149.112.161.2^{🇨🇦 CIRA-3149.112.161.0/24 markmonitor v4 cloud2 979 Bank Street, Suite 400 Ottawa ON K1S 5K5 Canada}
TXT	`v=spf1 -all`
SOA	`ns1.markmonitor.com`hostmaster@markmonitor.com 2024-06-26 #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=1784712677

Same first word

firstchapterbook.com

DNS History

9 records (8 active, 1 former)

●NSns1.markmonitor.com2017-04-09 → 2026-07-22 · 2 obs

● 2017-04-09 06:10:46
● 2026-07-22 09:32:06

●NSns2.markmonitor.com2017-04-09 → 2026-07-22 · 2 obs

● 2017-04-09 06:10:46
● 2026-07-22 09:32:06

●NSns3.markmonitor.com2017-04-09 → 2026-07-22 · 2 obs

● 2017-04-09 06:10:46
● 2026-07-22 09:32:06

●NSns4.markmonitor.com2017-04-09 → 2026-07-22 · 2 obs

● 2017-04-09 06:10:46
● 2026-07-22 09:32:06

●NSns5.markmonitor.com2017-04-09 → 2026-07-22 · 2 obs

● 2017-04-09 06:10:46
● 2026-07-22 09:32:06

●NSns6.markmonitor.com2017-04-09 → 2026-07-22 · 2 obs

● 2017-04-09 06:10:46
● 2026-07-22 09:32:06

●NSns7.markmonitor.com2017-04-09 → 2026-07-22 · 2 obs

● 2017-04-09 06:10:46
● 2026-07-22 09:32:06

●A3.33.139.322026-03-23 → 2026-07-22 · 3 obs

○ 2017-04-09 06:10:46
● 2026-03-23 18:45:22
● 2026-07-22 09:32:06

○A72.52.10.142017-04-09 → 2017-04-09 · 3 obs

● 2017-04-09 06:10:46
○ 2026-03-23 18:45:22
○ 2026-07-22 09:32:06

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
firstchapterbook.com	ns1.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com, ns5.markmonitor.com...	14 records

✅ Authoritative Response

Server:149.112.161.1

NS records: ns1.markmonitor.com, ns3.markmonitor.com, ns4.markmonitor.com, ns5.markmonitor.com, ns6.markmonitor.com, ns7.markmonitor.com, ns2.markmonitor.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for firstchapterbook.com (unsigned zone)

⏱️ Timing

Total: 130ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`3.33.139.32`
NS	7	`ns1.markmonitor.com, ns2.markmonitor.com...`
TXT	1	`v=spf1 -all`
SOA	1	`ns1.markmonitor.com hostmaster.markmonit`

📌 Glue Records Collected

Total: 14

Out-of-bailiwick: 14 (ns1.markmonitor.com, ns1.markmonitor.com, ns3.markmonitor.com...)

Analysis

IP Addresses

firstchapterbook.com has exactly one IP address — 3.33.139.32.

www.vistaprint.uk, 18662indigo.org, audemarine.com plus two other host names have IP numbers in common with firstchapterbook.com.

Name Servers

firstchapterbook.com carries NS records listing 7 name servers — ns1.markmonitor.com, ns2.markmonitor.com, ns3.markmonitor.com and 4 others.

firstchapterbook.com has at least partial name server overlap with other domains, such as kohlerbath.com, mercadoslibres.com.ar, loopleads.com and two others.

It is common to find these name servers paired with the name servers ns4.markmonitor.com, ns5.markmonitor.com, ns6.markmonitor.com and ns7.markmonitor.com.

Host names pointing to two IP addresses:

The A records for ns1.markmonitor.com return 149.112.160.1 and 2620:10a:80a8::1.

The A records for ns2.markmonitor.com return 176.97.158.1 and 2001:67c:10b8::1.

The A records for ns3.markmonitor.com return 149.112.161.1 and 2620:10a:80a9::1.

The A records for ns4.markmonitor.com return 192.174.68.1 and 2001:67c:1bc::1.

The A records for ns5.markmonitor.com return 149.112.160.2 and 2620:10a:80a8::2.

The A records for ns6.markmonitor.com return 176.97.158.3 and 2001:67c:10b8::3.

The A records for ns7.markmonitor.com return 149.112.161.2 and 2620:10a:80a9::2.

firstchapterbook.com - robtex.com