`educatedbook.com`

DNSSEC	⚠️ Not signed
A	18.211.120.133^{🇺🇸 Amazon18.208.0.0/13 EC2 IAD prefix}
		PTR	`ec2-18-211-120-133.compute-1.amazonaws.com`
A	44.219.250.216^{🇺🇸 Amazon44.192.0.0/11 EC2 IAD prefix}
A	52.204.53.5^{🇺🇸 Amazon52.200.0.0/13 EC2 IAD prefix}
NS	`ns1.prh.com` ⭐
		A	107.162.234.197^{🇺🇸 DEFENSENET-1107.162.234.0/24 F5 via EMIX}
NS	`ns2.prh.com`
		A	107.162.176.221^{🇺🇸 DEFENSENET-1107.162.176.0/24 F5 via EMIX}
MX	`us-smtp-inbound-1.mimecast.com` ⭐
		A	170.10.128.141^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.128.221^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.128.242^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.141^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.221^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.242^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
MX	`us-smtp-inbound-2.mimecast.com` ⭐
		A	170.10.128.141^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.128.221^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.128.242^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.141^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.221^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.242^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
SOA	`ns1.prh.com`postmaster@randomhouse.com 2024-03-29 #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=1771291435

Same first word

educatedbook.com

DNS History

10 records (7 active, 3 former)

○NSdns1.randomhouse.com2018-05-14 → 2018-05-14 · 3 obs

● 2018-05-14 07:03:22
○ 2026-03-13 12:23:40
○ 2026-03-14 09:07:34

○NSdns2.randomhouse.com2018-05-14 → 2018-05-14 · 3 obs

● 2018-05-14 07:03:22
○ 2026-03-13 12:23:40
○ 2026-03-14 09:07:34

●NSns1.prh.com2026-03-13 → 2026-03-14 · 3 obs

○ 2018-05-14 07:03:22
● 2026-03-13 12:23:40
● 2026-03-14 09:07:34

●NSns2.prh.com2026-03-13 → 2026-03-14 · 3 obs

○ 2018-05-14 07:03:22
● 2026-03-13 12:23:40
● 2026-03-14 09:07:34

●MXus-smtp-inbound-1.mimecast.com2018-05-14 → 2026-03-14 · 2 obs

● 2018-05-14 07:03:22
● 2026-03-14 09:07:34

●MXus-smtp-inbound-2.mimecast.com2018-05-14 → 2026-03-14 · 2 obs

● 2018-05-14 07:03:22
● 2026-03-14 09:07:34

○A170.171.208.1072018-05-14 → 2018-05-14 · 3 obs

● 2018-05-14 07:03:22
○ 2026-03-13 12:23:40
○ 2026-03-14 09:07:34

●A18.211.120.1332026-03-13 → 2026-03-14 · 3 obs

○ 2018-05-14 07:03:22
● 2026-03-13 12:23:40
● 2026-03-14 09:07:34

●A44.219.250.2162026-03-13 → 2026-03-14 · 3 obs

○ 2018-05-14 07:03:22
● 2026-03-13 12:23:40
● 2026-03-14 09:07:34

●A52.204.53.52026-03-13 → 2026-03-14 · 3 obs

○ 2018-05-14 07:03:22
● 2026-03-13 12:23:40
● 2026-03-14 09:07:34

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	f.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net, i.gtld-servers.net...	-
educatedbook.com	ns1.prh.com, ns2.prh.com	2 records

✅ Authoritative Response

Server: 107.162.234.197

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for educatedbook.com (unsigned zone)

⏱️ Timing

Total: 1014ms | Queries: -

📄 Records

Type	Count	Sample Data
A	3	`44.219.250.216, 18.211.120.133...`
NS	2	`ns1.prh.com, ns2.prh.com`
MX	2	`us-smtp-inbound-2.mimecast.com (pri: 10), us-smtp-inbound-1.mimecast.com (pri: 10)`
SOA	1	`ns1.prh.com postmaster.randomhouse.com`

📌 Glue Records Collected

Total: 2

Out-of-bailiwick: 2 (ns1.prh.com, ns2.prh.com)

Analysis

IP Addresses

educatedbook.com points to three IPs: 18.211.120.133, 44.219.250.216 and 52.204.53.5.

Other host names such as grossetdunlapbooks.com, watson-guptill.com, georgebushdecisionpoints.net, penguinrandomhouse.org and ec2-18-211-120-133.compute-1.amazonaws.com share IPs with educatedbook.com.

Name Servers

Two name servers ns1.prh.com and ns2.prh.com handle the delegation for educatedbook.com.

educatedbook.com shares the same name server setup as other domains, for example rhspeakers.com, pgius.com, templartrilogy.com, sarahwatersauthor.com and evictedthebook.com.

educatedbook.com shares name servers with other domains at least partially, for instance rodalebooks.com.

Host names with one IP number:

ns1.prh.com points to 107.162.234.197; ns2.prh.com points to 107.162.176.221.

Mail Servers

Two mail servers handle educatedbook.com: us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com.

educatedbook.com shares the same mail server setup as other domains, including wholesomesweeteners.com, 219.17.trimet.org, rscs-pc.com, deepwatch.com and bztm.com.

educatedbook.com shares at least partially some mail servers with other domains, for instance sscourtreporters.com, mcpbank.com, tjscpa.com, mooclaw.com and lanierparking.com.