`101textbooks.com`

DNSSEC	⚠️ Not signed
A	172.93.48.106^{🇺🇸 HIVELOCITY-1172.93.48.0/24 SEA1 - CID18486}
NS	`dns1.registrar-servers.com` ⭐
		A	2610:a1:1024::200^{🇺🇸 MAINT-ID-120082610:a1:1024::/48 Neustar}
			PTR	`dns1.namecheaphosting.com`
			PTR	`dns1.registrar-servers.com`
		A	156.154.132.200^{🇺🇸 MAINT-ID-12008156.154.132.0/24 Neustar}
			PTR	`dns1.namecheaphosting.com`
			PTR	`dns1.registrar-servers.com`
NS	`dns2.registrar-servers.com`
		A	2610:a1:1025::200^{🇺🇸 MAINT-ID-120082610:a1:1025::/48 Neustar}
			PTR	`dns2.namecheaphosting.com`
			PTR	`dns2.registrar-servers.com`
		A	156.154.133.200^{🇺🇸 MAINT-ID-12008156.154.133.0/24 Neustar}
			PTR	`dns2.namecheaphosting.com`
			PTR	`dns2.registrar-servers.com`
MX	`mail.textbooks101.com` ⭐
		A	2602:ff16:2:0:1:af:0:1^{🇺🇸 HIVELOCITY-12602:ff16:2::/48 SEA1 - CID18486}
		A	172.93.48.106^{🇺🇸 HIVELOCITY-1172.93.48.0/24 SEA1 - CID18486}
SOA	`dns1.registrar-servers.com`hostmaster@registrar-servers.com serial=1620062606

`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=1776095407

Same first word

101textbooks.com

Similar names

textbooks101.com

DNS History

8 records (4 active, 4 former)

●NSdns1.registrar-servers.com2026-03-27 → 2026-04-13 · 3 obs

○ 2017-03-28 07:58:16
● 2026-03-27 09:09:26
● 2026-04-13 16:06:46

●NSdns2.registrar-servers.com2026-03-27 → 2026-04-13 · 3 obs

○ 2017-03-28 07:58:16
● 2026-03-27 09:09:26
● 2026-04-13 16:06:46

○NSsdns1.ovh.ca2016-03-27 → 2017-03-28 · 4 obs

● 2016-03-27 00:21:28
● 2017-03-28 07:58:16
○ 2026-03-27 09:09:26
○ 2026-04-13 16:06:46

○NSvps66971.vps.ovh.ca2016-03-27 → 2017-03-28 · 4 obs

● 2016-03-27 00:21:28
● 2017-03-28 07:58:16
○ 2026-03-27 09:09:26
○ 2026-04-13 16:06:46

○MXmail.101textbooks.com2016-03-27 → 2017-03-28 · 4 obs

● 2016-03-27 00:21:28
● 2017-03-28 07:58:16
○ 2026-03-27 09:09:26
○ 2026-04-13 16:06:46

●MXmail.textbooks101.com2026-03-27 → 2026-04-13 · 3 obs

○ 2017-03-28 07:58:16
● 2026-03-27 09:09:26
● 2026-04-13 16:06:46

●A172.93.48.1062026-03-27 → 2026-04-13 · 3 obs

○ 2017-03-28 07:58:16
● 2026-03-27 09:09:26
● 2026-04-13 16:06:46

○A192.99.54.52016-03-27 → 2017-03-28 · 4 obs

● 2016-03-27 00:21:28
● 2017-03-28 07:58:16
○ 2026-03-27 09:09:26
○ 2026-04-13 16:06:46

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
101textbooks.com	dns1.registrar-servers.com, dns2.registrar-servers.com	4 records

✅ Authoritative Response

Server:156.154.133.200

NS records: dns1.registrar-servers.com, dns2.registrar-servers.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 101textbooks.com (unsigned zone)

⏱️ Timing

Total: 90ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`172.93.48.106`
NS	2	`dns1.registrar-servers.com, dns2.registrar-servers.com`
MX	1	`mail.textbooks101.com (pri: 10)`
SOA	1	`dns1.registrar-servers.com hostmaster.re`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (dns1.registrar-servers.com, dns1.registrar-servers.com, dns2.registrar-servers.com...)

Analysis

IP Addresses

101textbooks.com points to a single IP number: 172.93.48.106.

Other host names, for instance mail.influencerspring.com, ns1.textbooks101.com, mail.musry.com, mail.textbooks101.com and influencerspring.com share IP numbers with 101textbooks.com.

Name Servers

101textbooks.com is delegated to two name servers: dns1.registrar-servers.com and dns2.registrar-servers.com.

101textbooks.com uses the same name server setup as other domains, for instance serielatinobobesponja.com, eyewearlenses.com, skinhause.com, centraljerseylegalservices.com and crazespaces.pw.

101textbooks.com at least partially shares name servers with other domains, such as icaufo.com and kiyozora.com and niitepold.net.

these name servers are often used with dns3.registrar-servers.com, dns4.registrar-servers.com and dns5.registrar-servers.com.

Host names with two IP numbers:

The host dns1.registrar-servers.com points to 2610:a1:1024::200 and 156.154.132.200.

The host dns2.registrar-servers.com points to 2610:a1:1025::200 and 156.154.133.200.

Mail Servers

The mail server for 101textbooks.com is mail.textbooks101.com.

101textbooks.com uses the same mail server setup as other domains, for example textbooks101.com.

Host name mail.textbooks101.com resolves to two IPs: 2602:ff16:2:0:1:af:0:1 and 172.93.48.106.

101textbooks.com - robtex.com