tstprep.com - dns.ninja

`tstprep.com`

DNSSEC	⚠️ Not signed
A	104.17.15.101^{Cloudflare104.17.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
NS	`duke.ns.cloudflare.com` ⭐
		A	2606:4700:58::adf5:3b6e^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`duke.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c16e^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`duke.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:216e^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`duke.ns.cloudflare.com`
		A	108.162.193.110^{🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`duke.ns.cloudflare.com`
		A	172.64.33.110^{🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`duke.ns.cloudflare.com`
		A	173.245.59.110^{🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`duke.ns.cloudflare.com`
NS	`reza.ns.cloudflare.com`
		A	2606:4700:50::adf5:3ad9^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`reza.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c0d9^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`reza.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:20d9^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`reza.ns.cloudflare.com`
		A	108.162.192.217^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`reza.ns.cloudflare.com`
		A	172.64.32.217^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`reza.ns.cloudflare.com`
		A	173.245.58.217^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`reza.ns.cloudflare.com`
MX	`aspmx.l.google.com` ⭐
		A	2607:f8b0:4004:c17::1b^{🇺🇸 Google2607:f8b0:4004::/48}
			PTR	`bl-in-f27.1e100.net`
		A	142.251.16.27^{🇺🇸 Google142.251.16.0/24}
			PTR	`bl-in-f27.1e100.net`
MX	`alt1.aspmx.l.google.com`⁽⁵⁾
		A	2800:3f0:4003:c0f::1a^{🇨🇱 Google2800:3f0:4003::/48}
		A	108.177.123.27^{🇺🇸 Google108.177.123.0/24}
			PTR	`lcscld-in-f27.1e100.net`
MX	`alt2.aspmx.l.google.com`⁽⁵⁾
		A	2a00:1450:400b:c02::1b^{🇮🇪 Google2a00:1450:400b::/48}
			PTR	`dj-in-f27.1e100.net`
		A	172.253.116.26^{🇺🇸 Google172.253.116.0/24}
			PTR	`dj-in-f26.1e100.net`
MX	`alt3.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:4009:c0f::1b^{🇬🇧 Google2a00:1450:4009::/48}
			PTR	`yulhrs-in-f27.1e100.net`
		A	192.178.223.27^{🇺🇸 Google192.178.223.0/24}
			PTR	`yulhrs-in-f27.1e100.net`
MX	`alt4.aspmx.l.google.com`⁽¹⁰⁾
		A	2a00:1450:400c:c23::1b^{🇧🇪 Google2a00:1450:400c::/48}
			PTR	`yubrupd-in-f27.1e100.net`
		A	172.253.157.26^{🇺🇸 Google172.253.0.0/16}
			PTR	`yubrupd-in-f26.1e100.net`
TXT	`ahrefs-site-verification_5ea5b96044d44e3f1b19263017d1ea1c3cf68ba62cf7011fa8d0...`
TXT	`facebook-domain-verification=6yopjaotp4ee8nj7f4rjhnjgaqn30d`
TXT	`google-site-verification=DvmFQtg5fBfDscagESxaYNTMzEVb1Iqq-X1GzZQZ7AY`
TXT	`google-site-verification=XTtfBGjI1uKTtG7jynOpng--j7Qh9UlCzrMUbB84X20`
TXT	`google-site-verification=lgp9LhUauh45UGjLBLvy9sBEZ9wAduz4gsL5vHQ374M`
TXT	`google-site-verification=t_4Huz-oiCc311hWxIX6DASYtFiGOu_mUBvw7pm5gUE`
TXT	`v=spf1 a mx include:_spf.google.com ~all`
SOA	`duke.ns.cloudflare.com`dns@cloudflare.com serial=2410998456

`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=1785960664

📈 Tranco rank: #639,790

Previously MX for

tstprep.com

Same first word

tstprep.com

Similar names

prptest.com

ptrpest.com

DNS History

16 records (8 active, 8 former)

●NSduke.ns.cloudflare.com2026-02-18 → 2026-08-05 · 3 obs

○ 2018-05-11 06:33:20
● 2026-02-18 22:31:48
● 2026-08-05 20:37:36

○NSns1.am16.siteground.biz2018-05-11 → 2018-05-11 · 3 obs

● 2018-05-11 06:33:20
○ 2026-02-18 22:31:48
○ 2026-08-05 20:37:36

○NSns2.am16.siteground.biz2018-05-11 → 2018-05-11 · 3 obs

● 2018-05-11 06:33:20
○ 2026-02-18 22:31:48
○ 2026-08-05 20:37:36

●NSreza.ns.cloudflare.com2026-02-18 → 2026-08-05 · 3 obs

○ 2018-05-11 06:33:20
● 2026-02-18 22:31:48
● 2026-08-05 20:37:36

●MXalt1.aspmx.l.google.com2026-02-18 → 2026-08-05 · 3 obs

○ 2018-05-11 06:33:20
● 2026-02-18 22:31:48
● 2026-08-05 20:37:36

●MXalt2.aspmx.l.google.com2026-02-18 → 2026-08-05 · 3 obs

○ 2018-05-11 06:33:20
● 2026-02-18 22:31:48
● 2026-08-05 20:37:36

●MXalt3.aspmx.l.google.com2026-02-18 → 2026-08-05 · 3 obs

○ 2018-05-11 06:33:20
● 2026-02-18 22:31:48
● 2026-08-05 20:37:36

●MXalt4.aspmx.l.google.com2026-02-18 → 2026-08-05 · 3 obs

○ 2018-05-11 06:33:20
● 2026-02-18 22:31:48
● 2026-08-05 20:37:36

●MXaspmx.l.google.com2026-02-18 → 2026-08-05 · 3 obs

○ 2018-05-11 06:33:20
● 2026-02-18 22:31:48
● 2026-08-05 20:37:36

○MXtstprep.com2018-05-11 → 2018-05-11 · 3 obs

● 2018-05-11 06:33:20
○ 2026-02-18 22:31:48
○ 2026-08-05 20:37:36

●A104.17.15.1012026-03-01 → 2026-08-05 · 5 obs

○ 2026-02-18 22:31:48
● 2026-03-01 00:20:16
○ 2026-03-08 14:09:02
● 2026-04-05 21:49:16
● 2026-08-05 20:37:36

○A109.73.233.2022018-05-11 → 2018-05-11 · 3 obs

● 2018-05-11 06:33:20
○ 2026-02-18 22:31:48
○ 2026-08-05 20:37:36

○A172.66.40.2092026-02-18 → 2026-03-08 · 6 obs

○ 2018-05-11 06:33:20
● 2026-02-18 22:31:48
○ 2026-03-01 00:20:16
● 2026-03-08 14:09:02
○ 2026-04-05 21:49:16
○ 2026-08-05 20:37:36

○A172.66.43.472026-02-18 → 2026-03-08 · 6 obs

○ 2018-05-11 06:33:20
● 2026-02-18 22:31:48
○ 2026-03-01 00:20:16
● 2026-03-08 14:09:02
○ 2026-04-05 21:49:16
○ 2026-08-05 20:37:36

○A2606:4700:3108::ac42:28d12026-02-18 → 2026-03-08 · 6 obs

○ 2018-05-11 06:33:20
● 2026-02-18 22:31:48
○ 2026-03-01 00:20:16
● 2026-03-08 14:09:02
○ 2026-04-05 21:49:16
○ 2026-08-05 20:37:36

○A2606:4700:3108::ac42:2b2f2026-02-18 → 2026-03-08 · 6 obs

○ 2018-05-11 06:33:20
● 2026-02-18 22:31:48
○ 2026-03-01 00:20:16
● 2026-03-08 14:09:02
○ 2026-04-05 21:49:16
○ 2026-08-05 20:37:36

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
com	l.gtld-servers.net, j.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net...	-
tstprep.com	duke.ns.cloudflare.com, reza.ns.cloudflare.com	12 records

✅ Authoritative Response

Server:108.162.193.110

NS records: duke.ns.cloudflare.com, reza.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for tstprep.com (unsigned zone)

⏱️ Timing

Total: 179ms | Queries: -

📄 Records

Type	Count	Sample Data
A	1	`104.17.15.101`
NS	2	`duke.ns.cloudflare.com, reza.ns.cloudflare.com`
MX	5	`aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...`
TXT	7	`ahrefs-site-verification_5ea5b96044d44e3, facebook-domain-verification=6yopjaotp4e...`
SOA	1	`duke.ns.cloudflare.com dns.cloudflare.co`

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (duke.ns.cloudflare.com, duke.ns.cloudflare.com, duke.ns.cloudflare.com...)

Analysis

IP Addresses

tstprep.com directs to one IP number, which is 104.17.15.101.

Among the host names that share IP numbers with tstprep.com are becolve.com, raspberryshake.org, candogiveguide.org and two others.

Name Servers

The NS records for tstprep.com delegate to duke.ns.cloudflare.com and reza.ns.cloudflare.com.

tstprep.com has the same name server delegation as a number of other domains, such as rbcapitalmanagement.com, i3.school, ftso.gr and two more.

tstprep.com partially shares its NS delegation with several other domains, including nya.in.ua, marmarisescortgo.xyz, lechevalier.se and two others.

These name servers often co-occur with the name servers martha.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

duke.ns.cloudflare.com maps to 108.162.193.110, 172.64.33.110, 173.245.59.110 and 3 additional IP addresses.

reza.ns.cloudflare.com maps to 108.162.192.217, 172.64.32.217, 173.245.58.217 and 3 additional IP addresses.

Mail Servers

tstprep.com is handled by five mail servers: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com and two others.

tstprep.com shares at least some of its mail servers with other domains — for example planet-a.com, alignedgardens.com, wa-cph.com and two more.

It is common for these mail servers to co-occur with alt3.aspmx.l.google.com, alt4.aspmx.l.google.com, aspmx2.googlemail.com and aspmx3.googlemail.com as mail servers.

Hosts with two IP numbers each:

The A records for aspmx.l.google.com return 142.251.16.27 and 2607:f8b0:4004:c17::1b.

The A records for alt1.aspmx.l.google.com return 108.177.123.27 and 2800:3f0:4003:c0f::1a.

The A records for alt2.aspmx.l.google.com return 172.253.116.26 and 2a00:1450:400b:c02::1b.

The A records for alt3.aspmx.l.google.com return 192.178.223.27 and 2a00:1450:4009:c0f::1b.

The A records for alt4.aspmx.l.google.com return 172.253.157.26 and 2a00:1450:400c:c23::1b.