cert-prep.com - robtex.com

cert-prep.com

DNSSEC⚠️ Not signed
A2606:4700:3030::ac43:b451🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::6815:3043🇺🇸 Cloudflare2606:4700:3035::/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:26e3Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
A2803:f800:50::6ca2:c2e3Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
A2a06:98c1:50::ac40:22e3Cloudflare2a06:98c1:50::/45
A108.162.194.227Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
A162.159.38.227Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
A172.64.34.227Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
NSed.ns.cloudflare.com
A2606:4700:58::adf5:3b6fCloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
A2803:f800:50::6ca2:c16fCloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
A2a06:98c1:50::ac40:216fCloudflare2a06:98c1:50::/45
A108.162.193.111Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
A172.64.33.111Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
A173.245.59.111Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.48.67, 172.67.180.81
IPv62606:4700:3030::ac43:b451, 2606:4700:3035::6815:3043
SOAanastasia.ns.cloudflare.comdns@cloudflare.com serial=2397145467

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=1771291435

DNS History

10 records (6 active, 4 former)

20162017201820192020202120222023202420252026NSanastasia.ns.cloudflare.comed.ns.cloudflare.comns931.websitewelcome.comns932.websitewelcome.comMXcert-prep.comA104.21.48.67172.67.180.812606:4700:3030::ac43:b4512606:4700:3035::6815:3043192.185.194.136
●NSanastasia.ns.cloudflare.com2026-03-13 → 2026-03-13 · 3 obs
○ 2017-10-18 21:05:42
● 2026-03-13 09:38:50
● 2026-03-13 09:38:54
●NSed.ns.cloudflare.com2026-03-13 → 2026-03-13 · 3 obs
○ 2017-10-18 21:05:42
● 2026-03-13 09:38:50
● 2026-03-13 09:38:54
○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
○ 2026-03-13 09:38:54
○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
○ 2026-03-13 09:38:54
○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
○ 2026-03-13 09:38:54
●A104.21.48.672026-03-13 → 2026-03-13 · 3 obs
○ 2017-10-18 21:05:42
● 2026-03-13 09:38:50
● 2026-03-13 09:38:54
●A172.67.180.812026-03-13 → 2026-03-13 · 3 obs
○ 2017-10-18 21:05:42
● 2026-03-13 09:38:50
● 2026-03-13 09:38:54
○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
○ 2026-03-13 09:38:54
●A2606:4700:3030::ac43:b4512026-03-13 → 2026-03-13 · 3 obs
○ 2017-10-18 21:05:42
● 2026-03-13 09:38:50
● 2026-03-13 09:38:54
●A2606:4700:3035::6815:30432026-03-13 → 2026-03-13 · 3 obs
○ 2017-10-18 21:05:42
● 2026-03-13 09:38:50
● 2026-03-13 09:38:54

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comk.gtld-servers.net, b.gtld-servers.net, g.gtld-servers.net, l.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: 210ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.48.67, 172.67.180.81
AAAA22606:4700:3035::6815:3043, 2606:4700:3030::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 four IP numbers: 2606:4700:3030::ac43:b451, 2606:4700:3035::6815:3043, 104.21.48.67 and 172.67.180.81.

For instance, other host names duckranch.com, valoracentralcapitalco.digital, nexusarcd.top, primatoto.id and sdhaoyang.net share IP numbers with cert-prep.com.

Name Servers

cert-prep.com is delegated to two name servers: anastasia.ns.cloudflare.com and ed.ns.cloudflare.com.

cert-prep.com uses the same name server setup as other domains such as intercom.net.ua, battertech.com, midwestexpressclinic.com, fusiontomo.com and rmhnorthernalberta.org.

cert-prep.com shares name servers with other domains at least partially, for example luhangairbagfender.com, ceritamu.com, 6769.net, ipuremarketing.com and track-your-package.ac.

These name servers are commonly used with the name servers ace.ns.cloudflare.com and wesley.ns.cloudflare.com.

Host names with six IP numbers: host name anastasia.ns.cloudflare.com points to: 2606:4700:50::a29f:26e3, 2803:f800:50::6ca2:c2e3, 2a06:98c1:50::ac40:22e3, 108.162.194.227, 162.159.38.227 and 172.64.34.227; host name ed.ns.cloudflare.com points to: 2606:4700:58::adf5:3b6f, 2803:f800:50::6ca2:c16f, 2a06:98c1:50::ac40:216f, 108.162.193.111, 172.64.33.111 and 173.245.59.111.