`contabook.com`

DNSSEC	⚠️ Not signed
A	2600:1f18:4ae:c607:d1d9:565f:b122:bfdb^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
A	2600:1f18:4ae:c608:83f8:2f9c:4a61:7b6a^{🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix}
A	52.44.244.98^{🇺🇸 Amazon52.44.0.0/15 EC2 Region prefix}
A	54.165.131.183^{🇺🇸 Amazon54.164.0.0/15 EC2 IAD prefix}
NS	`ns1.namebrightdns.com` ⭐
		A	2600:1f18:683a:ae1a:9934:7ff6:28ee:5504^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	54.159.91.195^{🇺🇸 Amazon54.156.0.0/14 EC2 IAD prefix}
			PTR	`ec2-54-159-91-195.compute-1.amazonaws.com`
		A	54.198.142.122^{🇺🇸 Amazon54.198.0.0/16 EC2 IAD prefix}
			PTR	`ec2-54-198-142-122.compute-1.amazonaws.com`
		A	54.205.240.161^{🇺🇸 Amazon54.204.0.0/15 EC2 IAD Prefix}
			PTR	`ec2-54-205-240-161.compute-1.amazonaws.com`
NS	`ns1.dropcatch.com`
		A	2600:1f18:683a:ae1b:8d53:5d7a:6c0b:eb1b^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	3.88.5.240^{🇺🇸 Amazon3.80.0.0/12 EC2 IAD prefix}
			PTR	`ec2-3-88-5-240.compute-1.amazonaws.com`
		A	52.23.179.111^{🇺🇸 Amazon52.20.0.0/14 EC2 IAD prefix}
			PTR	`ec2-52-23-179-111.compute-1.amazonaws.com`
NS	`ns2.dropcatch.com`
		A	2600:1f18:683a:ae1a:167:4924:c281:a1bc^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1a:9104:66ad:1859:3088^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	2600:1f18:683a:ae1b:806d:d76a:ebbf:b908^{🇺🇸 Amazon2600:1f18:6000::/35 AMAZON EC2 IAD prefix}
		A	54.164.93.203^{🇺🇸 Amazon54.164.0.0/15 EC2 IAD prefix}
			PTR	`ec2-54-164-93-203.compute-1.amazonaws.com`
		A	100.31.153.100^{🇺🇸 Amazon100.24.0.0/13 EC2 IAD prefix}
			PTR	`ec2-100-31-153-100.compute-1.amazonaws.com`
MX	`mail1.namebrightmail.com` ⭐
		A	66.35.35.26^{🇺🇸 IMDC66.35.35.0/24}
			PTR	`mail1.namebrightmail.com`
MX	`mail2.namebrightmail.com` ⭐
		A	66.35.35.28^{🇺🇸 IMDC66.35.35.0/24}
			PTR	`mail2.namebrightmail.com`
TXT	`google-site-verification=YourUniqueGoogleVerificationCode`
TXT	`v=spf1 a:smtpout1.namebrightmail.com a:smtpout2.namebrightmail.com include:na...`
SOA	`ns1.namebrightdns.com`dns@namebright.com 2026-03-29 #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=1774832627

Previously MX for

contabook.com

Subdomains

ns1.contabook.com

Same first word

contabook.com

DNS History

18 records (9 active, 9 former)

●NSns1.dropcatch.com2026-03-10 → 2026-03-30 · 3 obs

○ 2018-09-05 13:09:24
● 2026-03-10 15:49:46
● 2026-03-30 01:21:56

●NSns1.namebrightdns.com2026-03-10 → 2026-03-30 · 3 obs

○ 2018-09-05 13:09:24
● 2026-03-10 15:49:46
● 2026-03-30 01:21:56

○NSns1108.ui-dns.biz2018-09-05 → 2018-09-05 · 4 obs

○ 2017-02-09 07:43:06
● 2018-09-05 13:09:24
○ 2026-03-10 15:49:46
○ 2026-03-30 01:21:56

○NSns1108.ui-dns.com2018-09-05 → 2018-09-05 · 4 obs

○ 2017-02-09 07:43:06
● 2018-09-05 13:09:24
○ 2026-03-10 15:49:46
○ 2026-03-30 01:21:56

○NSns1108.ui-dns.de2018-09-05 → 2018-09-05 · 4 obs

○ 2017-02-09 07:43:06
● 2018-09-05 13:09:24
○ 2026-03-10 15:49:46
○ 2026-03-30 01:21:56

○NSns1108.ui-dns.org2018-09-05 → 2018-09-05 · 4 obs

○ 2017-02-09 07:43:06
● 2018-09-05 13:09:24
○ 2026-03-10 15:49:46
○ 2026-03-30 01:21:56

●NSns2.dropcatch.com2026-03-10 → 2026-03-30 · 3 obs

○ 2018-09-05 13:09:24
● 2026-03-10 15:49:46
● 2026-03-30 01:21:56

○NSns63.1and1.es2015-07-14 → 2017-02-09 · 4 obs

● 2015-07-14 15:50:54
● 2017-02-09 07:43:06
○ 2018-09-05 13:09:24
○ 2026-03-30 01:21:56

○NSns64.1and1.es2015-07-14 → 2017-02-09 · 4 obs

● 2015-07-14 15:50:54
● 2017-02-09 07:43:06
○ 2018-09-05 13:09:24
○ 2026-03-30 01:21:56

○MXcontabook.com2015-07-14 → 2018-09-05 · 4 obs

● 2015-07-14 15:50:54
● 2018-09-05 13:09:24
○ 2026-03-10 15:49:46
○ 2026-03-30 01:21:56

●MXmail1.namebrightmail.com2026-03-10 → 2026-03-30 · 3 obs

○ 2018-09-05 13:09:24
● 2026-03-10 15:49:46
● 2026-03-30 01:21:56

●MXmail2.namebrightmail.com2026-03-10 → 2026-03-30 · 3 obs

○ 2018-09-05 13:09:24
● 2026-03-10 15:49:46
● 2026-03-30 01:21:56

○MXmx01.1and1.es2015-07-14 → 2018-09-05 · 4 obs

● 2015-07-14 15:50:54
● 2018-09-05 13:09:24
○ 2026-03-10 15:49:46
○ 2026-03-30 01:21:56

●A2600:1f18:4ae:c607:d1d9:565f:b122:bfdb2026-03-10 → 2026-03-30 · 3 obs

○ 2018-09-05 13:09:24
● 2026-03-10 15:49:46
● 2026-03-30 01:21:56

●A2600:1f18:4ae:c608:83f8:2f9c:4a61:7b6a2026-03-10 → 2026-03-30 · 3 obs

○ 2018-09-05 13:09:24
● 2026-03-10 15:49:46
● 2026-03-30 01:21:56

●A52.44.244.982026-03-10 → 2026-03-30 · 3 obs

○ 2018-09-05 13:09:24
● 2026-03-10 15:49:46
● 2026-03-30 01:21:56

●A54.165.131.1832026-03-10 → 2026-03-30 · 3 obs

○ 2018-09-05 13:09:24
● 2026-03-10 15:49:46
● 2026-03-30 01:21:56

○A82.165.199.732015-07-14 → 2018-09-05 · 4 obs

● 2015-07-14 15:50:54
● 2018-09-05 13:09:24
○ 2026-03-10 15:49:46
○ 2026-03-30 01:21:56

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
contabook.com	ns1.dropcatch.com, ns2.dropcatch.com	8 records

✅ Authoritative Response

Server:3.88.5.240

NS records: ns1.dropcatch.com, ns2.dropcatch.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for contabook.com (unsigned zone)

⏱️ Timing

Total: 146ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`52.44.244.98, 54.165.131.183`
AAAA	2	`2600:1f18:4ae:c607:d1d9:565f:b122:bfdb, 2600:1f18:4ae:c608:83f8:2f9c:4a61:7b6a`
NS	2	`ns1.dropcatch.com, ns2.dropcatch.com`
MX	2	`mail2.namebrightmail.com (pri: 10), mail1.namebrightmail.com (pri: 10)`
TXT	2	`google-site-verification=YourUniqueGoogl, v=spf1 a:smtpout1.namebrightmail.com a:s`
SOA	1	`ns1.namebrightdns.com dns.namebright.com`

📌 Glue Records Collected

Total: 8

Out-of-bailiwick: 8 (ns1.dropcatch.com, ns1.dropcatch.com, ns1.dropcatch.com...)

Analysis

Hierarchy

ns1.contabook.com is a child of contabook.com.

IP Addresses

contabook.com refers to four IP numbers: 2600:1f18:4ae:c607:d1d9:565f:b122:bfdb, 2600:1f18:4ae:c608:83f8:2f9c:4a61:7b6a, 52.44.244.98 and 54.165.131.183.

Other host names, for instance caribcoffee.com, tokno.com, macau-creatives.org, secuber.com and desisoap.com share IP numbers with contabook.com.

Name Servers

contabook.com is delegated to three name servers: ns1.dropcatch.com, ns2.dropcatch.com and ns1.namebrightdns.com.

contabook.com at least partially shares name servers with other domains, including michellecorp.com, freemovetexas.com, cogaf.com, 63mt.com and revivetherapeutic.com.

these name servers are commonly used alongside the name servers nsg1.namebrightdns.com, nsg2.namebrightdns.com, ns2.namebrightdns.com, domain-for-sale.hugedomainsdns.com and forsale.hugedomainsdns.com.

Five IPs per host: ns2.dropcatch.com points to 2600:1f18:683a:ae1a:167:4924:c281:a1bc, 2600:1f18:683a:ae1a:9104:66ad:1859:3088, 2600:1f18:683a:ae1b:806d:d76a:ebbf:b908, 54.164.93.203 and 100.31.153.100.

Four IPs per host: ns1.namebrightdns.com points to 2600:1f18:683a:ae1a:9934:7ff6:28ee:5504, 54.159.91.195, 54.198.142.122 and 54.205.240.161.

Three IPs per host: ns1.dropcatch.com points to 2600:1f18:683a:ae1b:8d53:5d7a:6c0b:eb1b, 3.88.5.240 and undefined.

Mail Servers

contabook.com is served by two mail servers mail1.namebrightmail.com and mail2.namebrightmail.com.

contabook.com shares the same mail server setup as other domains, for instance onzou.com, purplestudio.net, metbpa.com, pokerzeus.com and onlinetickets.org.

contabook.com shares some mail servers with other domains, at least in part; for example amanis.com and waterylane.com.

Host names with a single IP address: mail1.namebrightmail.com points to 66.35.35.26; mail2.namebrightmail.com points to 66.35.35.28.

contabook.com - robtex.com

contabook.com

com

Previously MX for

Subdomains

Same first word

DNS History

🔍 DNS Trace

📋 Delegation Chain

✅ Authoritative Response

🔒 DNSSEC Status

⏱️ Timing

📄 Records

📌 Glue Records Collected

Analysis

Hierarchy

IP Addresses

Name Servers

Mail Servers

`contabook.com`

`com`