prepguide.com - dns.ninja

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

`prepguide.com`

DNSSEC	⚠️ Not signed
A	13.227.207.13^{🇺🇸 Amazon13.227.200.0/21 - Cloudfront}
		PTR	`server-13-227-207-13.gru3.r.cloudfront.net`
A	13.227.207.30^{🇺🇸 Amazon13.227.200.0/21 - Cloudfront}
A	13.227.207.90^{🇺🇸 Amazon13.227.200.0/21 - Cloudfront}
A	13.227.207.110^{🇺🇸 Amazon13.227.200.0/21 - Cloudfront}
NS	`ns-852.awsdns-42.net` ⭐
		A	2600:9000:5303:5400::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-852.awsdns-42.net`
		A	205.251.195.84^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-852.awsdns-42.net`
NS	`ns1.domcontrol.hk`
		A	2600:9000:5303:5400::1^{🇺🇸 Amazon2600:9000:5303::/48 - CloudFront}
			PTR	`ns-852.awsdns-42.net`
		A	205.251.195.84^{🇺🇸 Amazon205.251.195.0/24 prefix}
			PTR	`ns-852.awsdns-42.net`
NS	`ns2.domcontrol.hk`
		A	2600:9000:5307:8000::1^{🇺🇸 Amazon2600:9000:5307::/48 - CloudFront}
			PTR	`ns-1920.awsdns-48.co.uk`
		A	205.251.199.128^{🇺🇸 Amazon205.251.199.0/24 prefix}
			PTR	`ns-1920.awsdns-48.co.uk`
NS	`ns3.domcontrol.hk`
		A	2600:9000:5304:8f00::1^{🇺🇸 Amazon2600:9000:5304::/48 - CloudFront}
			PTR	`ns-1167.awsdns-17.org`
		A	205.251.196.143^{🇺🇸 Amazon205.251.196.0/24 prefix}
			PTR	`ns-1167.awsdns-17.org`
NS	`ns4.domcontrol.hk`
		A	2600:9000:5301:c600::1^{🇺🇸 Amazon2600:9000:5301::/48 - CloudFront}
			PTR	`ns-454.awsdns-56.com`
		A	205.251.193.198^{🇺🇸 Amazon205.251.193.0/24 prefix}
			PTR	`ns-454.awsdns-56.com`
MX	`mail.testtutor.com` ⭐
		A	80.156.56.135^{🇩🇪 DTAG80.156.0.0/16 Deutsche Telekom AG, Internet service provider}
TXT	`google-site-verification=vk8gtNiJBsQ0c0lnuSVsn6iuOB1--1hxzgH3Yw8GnE4`
SOA	`ns-852.awsdns-42.net`awsdns-hostmaster@amazon.com serial=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=1787144964

Same first word

prepguide.org

prepguide.com

Similar names

diegruppe.co.uk

diegruppe.de

diegruppe.at

Previous names

Next names

DNS History

20 records (10 active, 10 former)

●NSns-852.awsdns-42.net2026-08-18 → 2026-08-19 · 3 obs

○ 2017-06-16 12:35:24
● 2026-08-18 21:47:08
● 2026-08-19 13:23:38

○NSns.buydomains.com2015-06-15 → 2016-04-20 · 4 obs

● 2015-06-15 09:31:36
● 2016-04-20 10:44:08
○ 2016-11-19 16:45:42
○ 2026-08-19 13:23:38

●NSns1.domcontrol.hk2026-08-18 → 2026-08-19 · 3 obs

○ 2017-06-16 12:35:24
● 2026-08-18 21:47:08
● 2026-08-19 13:23:38

○NSns1.uniregistrymarket.link2016-11-19 → 2017-06-16 · 5 obs

○ 2016-04-20 10:44:08
● 2016-11-19 16:45:42
● 2017-06-16 12:35:24
○ 2026-08-18 21:47:08
○ 2026-08-19 13:23:38

●NSns2.domcontrol.hk2026-08-18 → 2026-08-19 · 3 obs

○ 2017-06-16 12:35:24
● 2026-08-18 21:47:08
● 2026-08-19 13:23:38

○NSns2.uniregistrymarket.link2016-11-19 → 2017-06-16 · 5 obs

○ 2016-04-20 10:44:08
● 2016-11-19 16:45:42
● 2017-06-16 12:35:24
○ 2026-08-18 21:47:08
○ 2026-08-19 13:23:38

●NSns3.domcontrol.hk2026-08-18 → 2026-08-19 · 3 obs

○ 2017-06-16 12:35:24
● 2026-08-18 21:47:08
● 2026-08-19 13:23:38

●NSns4.domcontrol.hk2026-08-18 → 2026-08-19 · 3 obs

○ 2017-06-16 12:35:24
● 2026-08-18 21:47:08
● 2026-08-19 13:23:38

●MXmail.testtutor.com2026-08-18 → 2026-08-19 · 2 obs

● 2026-08-18 21:47:08
● 2026-08-19 13:23:38

●A13.227.207.1102026-08-19 → 2026-08-19 · 5 obs

○ 2026-08-18 21:47:08
● 2026-08-19 07:20:06
○ 2026-08-19 08:07:32
● 2026-08-19 12:17:58
● 2026-08-19 13:23:38

●A13.227.207.132026-08-19 → 2026-08-19 · 5 obs

○ 2026-08-18 21:47:08
● 2026-08-19 07:20:06
○ 2026-08-19 08:07:32
● 2026-08-19 12:17:58
● 2026-08-19 13:23:38

●A13.227.207.302026-08-19 → 2026-08-19 · 5 obs

○ 2026-08-18 21:47:08
● 2026-08-19 07:20:06
○ 2026-08-19 08:07:32
● 2026-08-19 12:17:58
● 2026-08-19 13:23:38

●A13.227.207.902026-08-19 → 2026-08-19 · 5 obs

○ 2026-08-18 21:47:08
● 2026-08-19 07:20:06
○ 2026-08-19 08:07:32
● 2026-08-19 12:17:58
● 2026-08-19 13:23:38

○A141.8.225.1242016-01-29 → 2016-04-20 · 5 obs

○ 2015-10-25 12:27:02
● 2016-01-29 15:36:28
● 2016-04-20 10:44:08
○ 2016-11-19 16:45:42
○ 2026-08-19 13:23:38

○A3.167.99.1202026-08-18 → 2026-08-19 · 6 obs

○ 2017-06-16 12:35:24
● 2026-08-18 21:47:08
○ 2026-08-19 07:20:06
● 2026-08-19 08:07:32
○ 2026-08-19 12:17:58
○ 2026-08-19 13:23:38

○A3.167.99.332026-08-18 → 2026-08-19 · 6 obs

○ 2017-06-16 12:35:24
● 2026-08-18 21:47:08
○ 2026-08-19 07:20:06
● 2026-08-19 08:07:32
○ 2026-08-19 12:17:58
○ 2026-08-19 13:23:38

○A3.167.99.852026-08-18 → 2026-08-19 · 6 obs

○ 2017-06-16 12:35:24
● 2026-08-18 21:47:08
○ 2026-08-19 07:20:06
● 2026-08-19 08:07:32
○ 2026-08-19 12:17:58
○ 2026-08-19 13:23:38

○A3.167.99.892026-08-18 → 2026-08-19 · 6 obs

○ 2017-06-16 12:35:24
● 2026-08-18 21:47:08
○ 2026-08-19 07:20:06
● 2026-08-19 08:07:32
○ 2026-08-19 12:17:58
○ 2026-08-19 13:23:38

○A50.63.202.1042015-06-15 → 2015-10-25 · 4 obs

● 2015-06-15 09:31:36
● 2015-10-25 12:27:02
○ 2016-01-29 15:36:28
○ 2026-08-19 13:23:38

○A69.172.201.1532016-11-19 → 2017-06-16 · 5 obs

○ 2016-04-20 10:44:08
● 2016-11-19 16:45:42
● 2017-06-16 12:35:24
○ 2026-08-18 21:47:08
○ 2026-08-19 13:23:38

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	e.gtld-servers.net, d.gtld-servers.net, h.gtld-servers.net, a.gtld-servers.net...	-
prepguide.com	ns1.domcontrol.hk, ns2.domcontrol.hk, ns3.domcontrol.hk, ns4.domcontrol.hk	-

✅ Authoritative Response

Server:205.251.195.84

NS records: ns1.domcontrol.hk, ns2.domcontrol.hk, ns3.domcontrol.hk, ns4.domcontrol.hk

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for prepguide.com (unsigned zone)

⏱️ Timing

Total: 815ms | Queries: -

📄 Records

Type	Count	Sample Data
A	4	`3.167.99.33, 3.167.99.120...`
NS	4	`ns1.domcontrol.hk, ns2.domcontrol.hk...`
MX	1	`mail.testtutor.com (pri: 10)`
TXT	1	`google-site-verification=vk8gtNiJBsQ0c0l`
SOA	1	`ns-852.awsdns-42.net awsdns-hostmaster.a`

Analysis

IP Addresses

prepguide.com resolves to four IP addresses: 13.227.207.13, 13.227.207.30, 13.227.207.90 and 13.227.207.110.

Among the host names that share IP numbers with prepguide.com are x9ebbg.inapps.appsflyersdk.com, kwschm.inapps.appsflyersdk.com, bs9syo.inapps.appsflyersdk.com and two others.

Name Servers

The authoritative name servers for prepguide.com are ns1.domcontrol.hk, ns2.domcontrol.hk, ns3.domcontrol.hk and two others.

prepguide.com partially shares its NS delegation with several other domains, including redhum.org, andrea-jeremy.com, invoicescollections.com and two others.

These name servers are regularly seen alongside ns-852.awsdns-42.net and ns4.domcontrol.hk as name servers.

Hosts with two IP numbers each:

ns1.domcontrol.hk points to 205.251.195.84 and 2600:9000:5303:5400::1.

ns2.domcontrol.hk points to 205.251.199.128 and 2600:9000:5307:8000::1.

ns3.domcontrol.hk points to 205.251.196.143 and 2600:9000:5304:8f00::1.

ns4.domcontrol.hk points to 205.251.193.198 and 2600:9000:5301:c600::1.

ns-852.awsdns-42.net points to 205.251.195.84 and 2600:9000:5303:5400::1.

ns1.domcontrol.hk and ns-852.awsdns-42.net are host names that each point to 2600:9000:5303:5400::1 IP addresses.

ns1.domcontrol.hk and ns-852.awsdns-42.net are host names that each point to 205.251.195.84 IP addresses.

Mail Servers

prepguide.com routes its mail through a single mail server, mail.testtutor.com.

prepguide.com has the same mail server arrangement as a number of other domains, for example toefl-tutor.com, gmat-tutor.co.uk, acttutor.com and two more.

mail.testtutor.com resolves to a single IP number: 80.156.56.135.