cert-prep.com - dns.ninja

cert-prep.com

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:b451🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::6815:3043🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.48.67Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.180.81🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSanastasia.ns.cloudflare.com ⭐
A2606:4700:50::a29f:26e3🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRanastasia.ns.cloudflare.com
A2803:f800:50::6ca2:c2e3🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRanastasia.ns.cloudflare.com
A2a06:98c1:50::ac40:22e3🇺🇸 Cloudflare2a06:98c1:50::/45
PTRanastasia.ns.cloudflare.com
A108.162.194.227🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRanastasia.ns.cloudflare.com
A162.159.38.227Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRanastasia.ns.cloudflare.com
A172.64.34.227🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRanastasia.ns.cloudflare.com
NSed.ns.cloudflare.com
A2606:4700:58::adf5:3b6f🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRed.ns.cloudflare.com
A2803:f800:50::6ca2:c16f🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRed.ns.cloudflare.com
A2a06:98c1:50::ac40:216f🇺🇸 Cloudflare2a06:98c1:50::/45
PTRed.ns.cloudflare.com
A108.162.193.111🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRed.ns.cloudflare.com
A172.64.33.111🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRed.ns.cloudflare.com
A173.245.59.111🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRed.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.48.67, 172.67.180.81
IPv6 hints2606:4700:3033::ac43:b451, 2606:4700:3034::6815:3043
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=254, name=cloudflare-ech.com
SOAanastasia.ns.cloudflare.comdns@cloudflare.com serial=2407157316

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1785949379

Previously MX for

cert-prep.com

Same first word

cert-prep.com

DNS History

16 records (6 active, 10 former)

20162017201820192020202120222023202420252026NSanastasia.ns.cloudflare.comed.ns.cloudflare.comns931.websitewelcome.comns932.websitewelcome.comMXcert-prep.comA104.21.48.67172.67.180.812606:4700:3033::ac43:b4512606:4700:3034::6815:3043188.114.96.0188.114.97.0192.185.194.1362606:4700:3030::ac43:b4512606:4700:3035::6815:30432a06:98c1:3120::2a06:98c1:3121::
●NSanastasia.ns.cloudflare.com2026-03-13 → 2026-08-05 · 3 obs
○ 2017-10-18 21:05:42
● 2026-03-13 09:38:50
● 2026-08-05 17:24:38
●NSed.ns.cloudflare.com2026-03-13 → 2026-08-05 · 3 obs
○ 2017-10-18 21:05:42
● 2026-03-13 09:38:50
● 2026-08-05 17:24:38
○NSns931.websitewelcome.com2015-05-20 → 2016-07-23 · 4 obs
● 2015-05-20 20:11:26
● 2016-07-23 11:39:46
○ 2017-10-18 21:05:42
○ 2026-08-05 17:24:38
○NSns932.websitewelcome.com2015-05-20 → 2016-07-23 · 4 obs
● 2015-05-20 20:11:26
● 2016-07-23 11:39:46
○ 2017-10-18 21:05:42
○ 2026-08-05 17:24:38
○MXcert-prep.com2015-05-20 → 2016-07-23 · 4 obs
● 2015-05-20 20:11:26
● 2016-07-23 11:39:46
○ 2017-10-18 21:05:42
○ 2026-08-05 17:24:38
●A104.21.48.672026-03-13 → 2026-08-05 · 9 obs
○ 2017-10-18 21:05:42
● 2026-03-13 09:38:50
● 2026-04-13 14:03:58
○ 2026-04-24 06:07:20
○ 2026-05-01 11:15:08
● 2026-06-13 02:00:50
○ 2026-06-15 11:48:14
● 2026-07-21 07:55:28
● 2026-08-05 17:24:38
●A172.67.180.812026-03-13 → 2026-08-05 · 9 obs
○ 2017-10-18 21:05:42
● 2026-03-13 09:38:50
● 2026-04-13 14:03:58
○ 2026-04-24 06:07:20
○ 2026-05-01 11:15:08
● 2026-06-13 02:00:50
○ 2026-06-15 11:48:14
● 2026-07-21 07:55:28
● 2026-08-05 17:24:38
○A188.114.96.02026-04-24 → 2026-06-15 · 7 obs
○ 2026-04-13 14:03:58
● 2026-04-24 06:07:20
● 2026-05-01 11:15:08
○ 2026-06-13 02:00:50
● 2026-06-15 11:48:14
○ 2026-07-21 07:55:28
○ 2026-08-05 17:24:38
○A188.114.97.02026-04-24 → 2026-06-15 · 7 obs
○ 2026-04-13 14:03:58
● 2026-04-24 06:07:20
● 2026-05-01 11:15:08
○ 2026-06-13 02:00:50
● 2026-06-15 11:48:14
○ 2026-07-21 07:55:28
○ 2026-08-05 17:24:38
○A192.185.194.1362015-05-20 → 2016-07-23 · 4 obs
● 2015-05-20 20:11:26
● 2016-07-23 11:39:46
○ 2017-10-18 21:05:42
○ 2026-08-05 17:24:38
○A2606:4700:3030::ac43:b4512026-03-13 → 2026-06-13 · 8 obs
○ 2017-10-18 21:05:42
● 2026-03-13 09:38:50
● 2026-04-13 14:03:58
○ 2026-04-24 06:07:20
○ 2026-05-01 11:15:08
● 2026-06-13 02:00:50
○ 2026-06-15 11:48:14
○ 2026-08-05 17:24:38
●A2606:4700:3033::ac43:b4512026-07-21 → 2026-08-05 · 3 obs
○ 2026-06-15 11:48:14
● 2026-07-21 07:55:28
● 2026-08-05 17:24:38
●A2606:4700:3034::6815:30432026-07-21 → 2026-08-05 · 3 obs
○ 2026-06-15 11:48:14
● 2026-07-21 07:55:28
● 2026-08-05 17:24:38
○A2606:4700:3035::6815:30432026-03-13 → 2026-06-13 · 8 obs
○ 2017-10-18 21:05:42
● 2026-03-13 09:38:50
● 2026-04-13 14:03:58
○ 2026-04-24 06:07:20
○ 2026-05-01 11:15:08
● 2026-06-13 02:00:50
○ 2026-06-15 11:48:14
○ 2026-08-05 17:24:38
○A2a06:98c1:3120::2026-04-24 → 2026-06-15 · 7 obs
○ 2026-04-13 14:03:58
● 2026-04-24 06:07:20
● 2026-05-01 11:15:08
○ 2026-06-13 02:00:50
● 2026-06-15 11:48:14
○ 2026-07-21 07:55:28
○ 2026-08-05 17:24:38
○A2a06:98c1:3121::2026-04-24 → 2026-06-15 · 7 obs
○ 2026-04-13 14:03:58
● 2026-04-24 06:07:20
● 2026-05-01 11:15:08
○ 2026-06-13 02:00:50
● 2026-06-15 11:48:14
○ 2026-07-21 07:55:28
○ 2026-08-05 17:24:38

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
cert-prep.comed.ns.cloudflare.com, anastasia.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.227

NS records: ed.ns.cloudflare.com, anastasia.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cert-prep.com (unsigned zone)

⏱️ Timing

Total: 122ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.48.67, 172.67.180.81
AAAA22606:4700:3034::6815:3043, 2606:4700:3033::ac43:b451
NS2anastasia.ns.cloudflare.com, ed.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1anastasia.ns.cloudflare.com dns.cloudfla

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

cert-prep.com points to the four IP addresses 104.21.48.67, 172.67.180.81, 2606:4700:3033::ac43:b451 and 2606:4700:3034::6815:3043.

Additional host names — divanpirlanta.com, dcmgroup.ca, daedalus-ug.de and two others — share IP numbers with cert-prep.com.

Name Servers

The NS records for cert-prep.com delegate to anastasia.ns.cloudflare.com and ed.ns.cloudflare.com.

cert-prep.com shares its name server setup with other domains, including gmetrix.dev, battertech.com, fusiontomo.com and two others.

The name servers of cert-prep.com overlap at least partially with those of other domains — among them chcetoprzezyc.pl, luhangairbagfender.com, ceritamu.com and two more.

These name servers commonly appear in combination with the name servers ace.ns.cloudflare.com.

Host names with 6 IP numbers:

anastasia.ns.cloudflare.com maps to 108.162.194.227, 162.159.38.227, 172.64.34.227 and 3 additional IP addresses.

ed.ns.cloudflare.com maps to 108.162.193.111, 172.64.33.111, 173.245.59.111 and 3 additional IP addresses.