`mail.prepbooks.com`

	DNSSEC	⚠️ Not signed
	A	209.195.8.70^{🇺🇸 COLOBLOX-6597209.195.0.0/18 Coloblox Data Centers Inc}

`prepbooks.com`

	DNSSEC	⚠️ Not signed
	A	209.195.8.70^{🇺🇸 COLOBLOX-6597209.195.0.0/18 Coloblox Data Centers Inc}
	NS	`ns89.worldnic.com` ⭐
	NS	`ns90.worldnic.com`
	MX	`prepbooks-com.mail.protection.outlook.com` ⭐
	TXT	`MS=ms54017300`
	TXT	`v=spf1 ip4:209.195.8.66`
	TXT	`v=spf1 include:secureserver.net -all`
	SOA	`NS89.WORLDNIC.com`namehost@WORLDNIC.com serial=122010714

Same first word

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mail.city

mail.yt

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DNS History

4 records (1 active, 3 former)

○A209.195.0.102016-04-03 → 2016-08-07 · 5 obs

○ 2016-01-01 05:24:24
● 2016-04-03 10:19:06
● 2016-08-07 18:41:32
○ 2026-02-24 12:25:18
○ 2026-05-13 06:15:36

●A209.195.8.702026-02-24 → 2026-05-13 · 3 obs

○ 2016-08-07 18:41:32
● 2026-02-24 12:25:18
● 2026-05-13 06:15:36

○A75.144.232.1322015-10-22 → 2016-01-01 · 5 obs

○ 2015-05-29 18:56:40
● 2015-10-22 17:59:46
● 2016-01-01 05:24:24
○ 2016-04-03 10:19:06
○ 2026-05-13 06:15:36

○A75.144.232.1332015-05-29 → 2015-05-29 · 3 obs

● 2015-05-29 18:56:40
○ 2015-10-22 17:59:46
○ 2026-05-13 06:15:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	f.gtld-servers.net, a.gtld-servers.net, b.gtld-servers.net, l.gtld-servers.net...	-
prepbooks.com	ns89.worldnic.com, ns90.worldnic.com	2 records

✅ Authoritative Response

Server:162.159.26.131

NS records: ns89.worldnic.com, ns90.worldnic.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for prepbooks.com (unsigned zone)

⏱️ Timing

Total: 281ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`209.195.8.70`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns89.worldnic.com, ns90.worldnic.com)

Analysis

IP Addresses

mail.prepbooks.com maps to IP address 209.195.8.70.

Other host names such as prepbooks.com, win-ntkfi0n2v63.prepbooks.com, www.prepbooks.com and *.prepbooks.com share IP numbers with mail.prepbooks.com.

mail.prepbooks.com - robtex.com