`optimumbooks.com`

DNSSEC	⚠️ Not signed
A	18.118.142.45^{🇺🇸 Amazon18.116.0.0/14 EC2 CMH Prefix}
		PTR	`ec2-18-118-142-45.us-east-2.compute.amazonaws.com`
NS	`ns75.domaincontrol.com` ⭐
		A	2603:5:21b4::30^{🇺🇸 GODADDY-DNS2603:5:21b0::/44}
			PTR	`ns75.domaincontrol.com`
		A	97.74.107.48^{🇺🇸 GODADDY-DNS97.74.106.0/23}
			PTR	`ns75.domaincontrol.com`
NS	`ns76.domaincontrol.com`
		A	2603:5:22b4::30^{🇺🇸 GODADDY-DNS2603:5:22b0::/44}
			PTR	`ns76.domaincontrol.com`
		A	173.201.75.48^{🇺🇸 GODADDY-DNS173.201.74.0/23}
			PTR	`ns76.domaincontrol.com`
MX	`optimumbooks-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c942::^{🇨🇦 Microsoft2a01:111:f000::/36}
			PTR	`mail-yt5pr01cu00100.inbound.protection.outlook.com`
		A	2a01:111:f403:c942::2^{🇨🇦 Microsoft2a01:111:f000::/36}
			PTR	`mail-yt3pr01cu00602.inbound.protection.outlook.com`
		A	2a01:111:f403:c942::3^{🇨🇦 Microsoft2a01:111:f000::/36}
			PTR	`mail-yt6pr01cu00103.inbound.protection.outlook.com`
		A	2a01:111:f403:c944::1^{🇨🇦 Microsoft2a01:111:f000::/36}
			PTR	`mail-yqzpr01cu01001.inbound.protection.outlook.com`
		A	52.101.190.0^{🇨🇦 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-yt5pr01cu00100.inbound.protection.outlook.com`
		A	52.101.190.1^{🇨🇦 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-yt3pr01cu00701.inbound.protection.outlook.com`
		A	52.101.190.2^{🇨🇦 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-yt3pr01cu00602.inbound.protection.outlook.com`
		A	52.101.190.3^{🇨🇦 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-yt6pr01cu00103.inbound.protection.outlook.com`
TXT	`NETORGFT18657353.onmicrosoft.com`
TXT	`v=spf1 include:secureserver.net -all`
SOA	`ns75.domaincontrol.com`dns@jomax.net 2025-04-25 #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=1774515122

Same first word

optimumbooks.com

DNS History

23 records (4 active, 19 former)

○NSns1.namebrightdns.com2015-10-29 → 2018-11-18 · 9 obs

○ 2015-06-28 03:24:24
● 2015-10-29 20:56:00
○ 2016-01-20 19:55:04
● 2016-04-09 20:50:02
○ 2016-04-29 14:45:22
○ 2017-01-14 17:40:36
● 2018-11-18 05:43:04
○ 2026-03-04 08:18:20
○ 2026-03-26 09:09:30

○NSns2.namebrightdns.com2015-10-29 → 2018-11-18 · 9 obs

●NSns75.domaincontrol.com2026-03-04 → 2026-03-26 · 3 obs

○ 2018-11-18 05:43:04
● 2026-03-04 08:18:20
● 2026-03-26 09:09:30

●NSns76.domaincontrol.com2026-03-04 → 2026-03-26 · 3 obs

○ 2018-11-18 05:43:04
● 2026-03-04 08:18:20
● 2026-03-26 09:09:30

○NSnsg1.namebrightdns.com2015-06-28 → 2016-04-29 · 7 obs

● 2015-06-28 03:24:24
○ 2015-10-29 20:56:00
● 2016-01-20 19:55:04
○ 2016-04-09 20:50:02
● 2016-04-29 14:45:22
○ 2016-12-23 20:15:24
○ 2026-03-26 09:09:30

○NSnsg2.namebrightdns.com2015-06-28 → 2016-04-29 · 7 obs

● 2015-06-28 03:24:24
○ 2015-10-29 20:56:00
● 2016-01-20 19:55:04
○ 2016-04-09 20:50:02
● 2016-04-29 14:45:22
○ 2016-12-23 20:15:24
○ 2026-03-26 09:09:30

○NSnst1.namebrightdns.com2016-12-23 → 2017-01-14 · 5 obs

○ 2016-04-29 14:45:22
● 2016-12-23 20:15:24
● 2017-01-14 17:40:36
○ 2018-11-18 05:43:04
○ 2026-03-26 09:09:30

○NSnst2.namebrightdns.com2016-12-23 → 2017-01-14 · 5 obs

○ 2016-04-29 14:45:22
● 2016-12-23 20:15:24
● 2017-01-14 17:40:36
○ 2018-11-18 05:43:04
○ 2026-03-26 09:09:30

○MXanmail.namebrightmail.com2015-06-28 → 2015-06-28 · 3 obs

● 2015-06-28 03:24:24
○ 2015-10-29 20:56:00
○ 2026-03-26 09:09:30

●MXoptimumbooks-com.mail.protection.outlook.com2026-03-04 → 2026-03-26 · 3 obs

○ 2015-10-29 20:56:00
● 2026-03-04 08:18:20
● 2026-03-26 09:09:30

●A18.118.142.452026-03-04 → 2026-03-26 · 3 obs

○ 2018-11-18 05:43:04
● 2026-03-04 08:18:20
● 2026-03-26 09:09:30

○A34.197.4.702017-01-14 → 2017-01-14 · 4 obs

○ 2016-12-23 20:15:24
● 2017-01-14 17:40:36
○ 2018-11-18 05:43:04
○ 2026-03-26 09:09:30

○A52.200.243.1232016-04-09 → 2016-04-29 · 5 obs

○ 2016-01-20 19:55:04
● 2016-04-09 20:50:02
● 2016-04-29 14:45:22
○ 2016-12-23 20:15:24
○ 2026-03-26 09:09:30

○A52.5.157.2202016-12-23 → 2016-12-23 · 4 obs

○ 2016-04-29 14:45:22
● 2016-12-23 20:15:24
○ 2017-01-14 17:40:36
○ 2026-03-26 09:09:30

○A52.54.132.832017-01-14 → 2017-01-14 · 4 obs

○ 2016-12-23 20:15:24
● 2017-01-14 17:40:36
○ 2018-11-18 05:43:04
○ 2026-03-26 09:09:30

○A52.70.121.2382016-12-23 → 2016-12-23 · 4 obs

○ 2016-04-29 14:45:22
● 2016-12-23 20:15:24
○ 2017-01-14 17:40:36
○ 2026-03-26 09:09:30

○A54.152.144.2432016-04-09 → 2016-04-29 · 5 obs

○ 2016-01-20 19:55:04
● 2016-04-09 20:50:02
● 2016-04-29 14:45:22
○ 2016-12-23 20:15:24
○ 2026-03-26 09:09:30

○A54.174.31.2542015-06-28 → 2015-10-29 · 4 obs

● 2015-06-28 03:24:24
● 2015-10-29 20:56:00
○ 2016-01-20 19:55:04
○ 2026-03-26 09:09:30

○A54.208.74.2152015-06-28 → 2015-10-29 · 4 obs

● 2015-06-28 03:24:24
● 2015-10-29 20:56:00
○ 2016-01-20 19:55:04
○ 2026-03-26 09:09:30

○A54.209.90.812016-01-20 → 2016-01-20 · 4 obs

○ 2015-10-29 20:56:00
● 2016-01-20 19:55:04
○ 2016-04-09 20:50:02
○ 2026-03-26 09:09:30

○A54.85.54.292016-01-20 → 2016-01-20 · 4 obs

○ 2015-10-29 20:56:00
● 2016-01-20 19:55:04
○ 2016-04-09 20:50:02
○ 2026-03-26 09:09:30

○CNAMEhdredirect-lb-399551664.us-east-1.elb.amazonaws.com2015-06-28 → 2016-04-29 · 4 obs

● 2015-06-28 03:24:24
● 2016-04-29 14:45:22
○ 2016-12-23 20:15:24
○ 2026-03-26 09:09:30

○CNAMEhdredirect-lb3-890977680.us-east-1.elb.amazonaws.com2016-12-23 → 2018-11-18 · 5 obs

○ 2016-04-29 14:45:22
● 2016-12-23 20:15:24
● 2018-11-18 05:43:04
○ 2026-03-04 08:18:20
○ 2026-03-26 09:09:30

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...	-
optimumbooks.com	ns75.domaincontrol.com, ns76.domaincontrol.com	4 records

✅ Authoritative Response

Server:97.74.107.48

NS records: ns75.domaincontrol.com, ns76.domaincontrol.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for optimumbooks.com (unsigned zone)

⏱️ Timing

Total: 229ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`18.118.142.45`
NS	2	`ns75.domaincontrol.com, ns76.domaincontrol.com`
MX	1	`optimumbooks-com.mail.protection.outlook`
TXT	2	`NETORGFT18657353.onmicrosoft.com, v=spf1 include:secureserver.net -all`
SOA	1	`ns75.domaincontrol.com dns.jomax.net`

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns75.domaincontrol.com, ns75.domaincontrol.com, ns76.domaincontrol.com...)

Analysis

IP Addresses

optimumbooks.com resolves to one IP number: 18.118.142.45.

Other host names, for example ec2-18-118-142-45.us-east-2.compute.amazonaws.com, share IP numbers with optimumbooks.com.

Name Servers

optimumbooks.com's delegation uses two name servers: ns75.domaincontrol.com and ns76.domaincontrol.com.

optimumbooks.com uses the same name server setup as other domains, such as kevinhalls.com, ldctrade.com, kitc(0x68656e746169)lors.com, hedicard.com and wheatonrams.com.

Host names with two IPs:

ns75.domaincontrol.com points to 2603:5:21b4::30 and 97.74.107.48

ns76.domaincontrol.com points to 2603:5:22b4::30 and 173.201.75.48

Mail Servers

A single mail server handles optimumbooks.com, optimumbooks-com.mail.protection.outlook.com.

Host optimumbooks-com.mail.protection.outlook.com points to eight IPs: 2a01:111:f403:c942::, 2a01:111:f403:c942::2, 2a01:111:f403:c942::3, 2a01:111:f403:c944::1, 52.101.190.0, 52.101.190.1, 52.101.190.2 and 52.101.190.3.

optimumbooks.com - robtex.com