`professionalebook.com`

DNSSEC	⚠️ Not signed
NS	`dns101.register.com` ⭐
		A	162.159.24.117^{Cloudflare162.159.24.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`dns102.register.com`
		A	162.159.25.158^{Cloudflare162.159.25.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
MX	`professionalebook-com.mail.protection.outlook.com` ⭐
		A	2a01:111:f403:c942::1^{🇨🇦 Microsoft2a01:111:f000::/36}
			PTR	`mail-yt3pr01cu00701.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	52.101.192.1^{🇨🇦 Microsoft52.96.0.0/12 MICROSOFT}
			PTR	`mail-yqzpr01cu01001.inbound.protection.outlook.com`
TXT	`v=spf1 mx ptr:cognilore.com mx:cognilore.com ip4:207.46.163.170 include:spf.m...`
SOA	`DNS101.REGISTER.com`root@REGISTER.com serial=124030714

`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=1774546022

Subdomains

ctf.professionalebook.com

Same first word

professionalebook.com

DNS History

9 records (3 active, 6 former)

○NSdns035.a.register.com2015-07-16 → 2017-04-09 · 3 obs

● 2015-07-16 12:12:00
● 2017-04-09 10:34:02
○ 2026-03-26 17:38:28

●NSdns101.register.com2026-03-26 → 2026-03-26 · 2 obs

○ 2017-04-09 10:34:02
● 2026-03-26 17:38:28

●NSdns102.register.com2026-03-26 → 2026-03-26 · 2 obs

○ 2017-04-09 10:34:02
● 2026-03-26 17:38:28

○NSdns167.b.register.com2015-07-16 → 2017-04-09 · 3 obs

● 2015-07-16 12:12:00
● 2017-04-09 10:34:02
○ 2026-03-26 17:38:28

○NSdns194.c.register.com2015-07-16 → 2017-04-09 · 3 obs

● 2015-07-16 12:12:00
● 2017-04-09 10:34:02
○ 2026-03-26 17:38:28

○NSdns249.d.register.com2015-07-16 → 2017-04-09 · 3 obs

● 2015-07-16 12:12:00
● 2017-04-09 10:34:02
○ 2026-03-26 17:38:28

○MXmail.professionalebook.com2015-07-16 → 2015-07-16 · 3 obs

● 2015-07-16 12:12:00
○ 2015-11-19 18:09:40
○ 2026-03-26 17:38:28

●MXprofessionalebook-com.mail.protection.outlook.com2015-11-19 → 2026-03-26 · 3 obs

○ 2015-07-16 12:12:00
● 2015-11-19 18:09:40
● 2026-03-26 17:38:28

○A209.217.79.362015-07-16 → 2017-04-09 · 3 obs

● 2015-07-16 12:12:00
● 2017-04-09 10:34:02
○ 2026-03-26 17:38:28

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	b.gtld-servers.net, c.gtld-servers.net, i.gtld-servers.net, e.gtld-servers.net...	-
professionalebook.com	dns101.register.com, dns102.register.com	2 records

✅ Authoritative Response

Server:162.159.24.117

NS records: dns101.register.com, dns102.register.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for professionalebook.com (unsigned zone)

⏱️ Timing

Total: 619ms | Queries: -

📄 Records

Type	Count	Sample Data
NS	2	`dns101.register.com, dns102.register.com`
MX	1	`professionalebook-com.mail.protection.ou`
TXT	1	`v=spf1 mx ptr:cognilore.com mx:cognilore`
SOA	1	`DNS101.REGISTER.com root.REGISTER.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (dns101.register.com, dns102.register.com)

Analysis

Hierarchy

The parent of ctf.professionalebook.com is professionalebook.com.

Name Servers

Two name servers dns101.register.com and dns102.register.com handle the delegation for professionalebook.com.

professionalebook.com shares the same name server setup as other domains, for example victorallencompany.com, plymptoonstore.com, drayer.org, tmovies.com and interradmedical.com.

professionalebook.com partially shares name servers with other domains, for example meehan.be and ppsd.org.

Host names with one IP number:

dns101.register.com points to 162.159.24.117; dns102.register.com points to 162.159.25.158.

Mail Servers

The professionalebook-com.mail.protection.outlook.com mail server handles professionalebook.com.

professionalebook-com.mail.protection.outlook.com points to eight IP numbers: 2a01:111:f403:c942::1, 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 52.101.192.1.

professionalebook.com - robtex.com