certainty.dev - dns.ninja

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certainty.dev

DNSSEC⚠️ Not signed
A2606:4700:3034::ac43:c403🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3035::6815:151a🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.21.26Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.196.3🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSgreg.ns.cloudflare.com ⭐
A2606:4700:58::adf5:3b73🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgreg.ns.cloudflare.com
A2803:f800:50::6ca2:c173🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRgreg.ns.cloudflare.com
A2a06:98c1:50::ac40:2173🇺🇸 Cloudflare2a06:98c1:50::/45
PTRgreg.ns.cloudflare.com
A108.162.193.115🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgreg.ns.cloudflare.com
A172.64.33.115🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgreg.ns.cloudflare.com
A173.245.59.115🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgreg.ns.cloudflare.com
NSpam.ns.cloudflare.com
A2606:4700:50::adf5:3a8a🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRpam.ns.cloudflare.com
A2803:f800:50::6ca2:c08a🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRpam.ns.cloudflare.com
A2a06:98c1:50::ac40:208a🇺🇸 Cloudflare2a06:98c1:50::/45
PTRpam.ns.cloudflare.com
A108.162.192.138🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRpam.ns.cloudflare.com
A172.64.32.138🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRpam.ns.cloudflare.com
A173.245.58.138🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRpam.ns.cloudflare.com
MXaspmx.l.google.com ⭐
A2607:f8b0:4004:c25::1a🇺🇸 Google2607:f8b0:4004::/48
PTRyuiadtq-in-f26.1e100.net
A142.251.16.27🇺🇸 Google142.251.16.0/24
PTRbl-in-f27.1e100.net
MXsmtp.google.com ⭐
A2607:f8b0:4004:c1f::1a🇺🇸 Google2607:f8b0:4004::/48
PTRpd-in-f26.1e100.net
A2607:f8b0:4004:c21::1a🇺🇸 Google2607:f8b0:4004::/48
PTRpe-in-f26.1e100.net
A2607:f8b0:4004:c21::1b🇺🇸 Google2607:f8b0:4004::/48
PTRpe-in-f27.1e100.net
A2607:f8b0:4004:c23::1a🇺🇸 Google2607:f8b0:4004::/48
PTRyuiadrs-in-f26.1e100.net
A64.233.180.26🇺🇸 Google64.233.180.0/24
PTRon-in-f26.1e100.net
PTRpe-in-f26.1e100.net
A64.233.180.27🇺🇸 Google64.233.180.0/24
PTRon-in-f27.1e100.net
PTRpe-in-f27.1e100.net
A142.251.179.27🇺🇸 Google142.251.179.0/24
PTRpd-in-f27.1e100.net
A192.178.155.26🇺🇸 Google192.178.155.0/24
PTRyuiadrs-in-f26.1e100.net
A192.178.155.27🇺🇸 Google192.178.155.0/24
PTRyuiadrs-in-f27.1e100.net
MXalt2.aspmx.l.google.com(5)
A2a00:1450:400b:c02::1b🇮🇪 Google2a00:1450:400b::/48
PTRdj-in-f27.1e100.net
A172.253.116.27🇺🇸 Google172.253.116.0/24
PTRdj-in-f27.1e100.net
TXTgoogle-site-verification=OFw4vLr_2_lAyj9KYkV_5xEsLFIvSQArYQjyu58-GIk
TXTv=spf1 include:_spf.google.com -all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.21.26, 172.67.196.3
IPv6 hints2606:4700:3034::ac43:c403, 2606:4700:3035::6815:151a
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=178, name=cloudflare-ech.com
SOAgreg.ns.cloudflare.comdns@cloudflare.com serial=2413104958

dev

DNSSEC🔒 Signed (DS record present)
NSns-tld1.charlestonroadregistry.com ⭐
NSns-tld2.charlestonroadregistry.com
NSns-tld3.charlestonroadregistry.com
NSns-tld4.charlestonroadregistry.com
NSns-tld5.charlestonroadregistry.com
SOAns-tld1.charlestonroadregistry.comcloud-dns-hostmaster@google.com serial=1
🔒 HSTS Preload (+subdomains)

Same first word

certainty.online
certainty.org
certainty.asia
certainty.top
certainty.dk
certainty.ru
certainty.systems
certainty.mobi
certainty.com
certainty.it
certainty.co.nz
certainty.legal
certainty.is
certainty.biz
certainty.xyz
certainty.com.my
certainty.org.uk
certainty.io
certainty.net
certainty.center
certainty.vc
certainty.live
certainty.net.au
certainty.life
certainty.co.uk
certainty.ca
certainty.no
certainty.pl
certainty.si
certainty.loans
certainty.tech
certainty.de
certainty.global
certainty.dev
certainty.se
certainty.page
certainty.in
certainty.nl
certainty.co.in
certainty.com.au
certainty.co
certainty.eu
certainty.cc
certainty.info
certainty.ph
certainty.co.th

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Previous names

ceroone.dev
ceropapel.dev
ceros-system.dev
ceros.dev
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ceroz.dev
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cerro.dev
cerroserver.dev
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certain.dev
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Next names

certali.dev
certan.dev
certania.dev
certas.dev
certauth.dev
certbench.dev
certbot.dev
certbroker.dev
certbuddy.dev
certcrypt.dev
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certex.dev
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certia.dev

DNS History

9 records (9 active, 0 former)

NSgreg.ns.cloudflare.compam.ns.cloudflare.comMXalt2.aspmx.l.google.comaspmx.l.google.comsmtp.google.comA104.21.21.26172.67.196.32606:4700:3034::ac43:c4032606:4700:3035::6815:151a
●NSgreg.ns.cloudflare.com2026-09-10 → 2026-09-12 · 2 obs
● 2026-09-10 22:23:28
● 2026-09-12 20:11:52
●NSpam.ns.cloudflare.com2026-09-10 → 2026-09-12 · 2 obs
● 2026-09-10 22:23:28
● 2026-09-12 20:11:52
●MXalt2.aspmx.l.google.com2026-09-10 → 2026-09-12 · 2 obs
● 2026-09-10 22:23:28
● 2026-09-12 20:11:52
●MXaspmx.l.google.com2026-09-10 → 2026-09-12 · 2 obs
● 2026-09-10 22:23:28
● 2026-09-12 20:11:52
●MXsmtp.google.com2026-09-10 → 2026-09-12 · 2 obs
● 2026-09-10 22:23:28
● 2026-09-12 20:11:52
●A104.21.21.262026-09-10 → 2026-09-12 · 2 obs
● 2026-09-10 22:23:28
● 2026-09-12 20:11:52
●A172.67.196.32026-09-10 → 2026-09-12 · 2 obs
● 2026-09-10 22:23:28
● 2026-09-12 20:11:52
●A2606:4700:3034::ac43:c4032026-09-10 → 2026-09-12 · 2 obs
● 2026-09-10 22:23:28
● 2026-09-12 20:11:52
●A2606:4700:3035::6815:151a2026-09-10 → 2026-09-12 · 2 obs
● 2026-09-10 22:23:28
● 2026-09-12 20:11:52

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
devns-tld1.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld5.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com...-
certainty.devgreg.ns.cloudflare.com, pam.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.33.115

NS records: greg.ns.cloudflare.com, pam.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for certainty.dev (unsigned zone)

⏱️ Timing

Total: 1029ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.21.26, 172.67.196.3
AAAA22606:4700:3035::6815:151a, 2606:4700:3034::ac43:c403
NS2greg.ns.cloudflare.com, pam.ns.cloudflare.com
MX3aspmx.l.google.com (pri: 1), smtp.google.com (pri: 1)...
TXT2google-site-verification=OFw4vLr_2_lAyj9, v=spf1 include:_spf.google.com -all
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1greg.ns.cloudflare.com dns.cloudflare.co

Analysis

IP Addresses

certainty.dev directs to four IP numbers, which are 104.21.21.26, 172.67.196.3, 2606:4700:3034::ac43:c403 and 2606:4700:3035::6815:151a.

srmssrc.com, selectvaluecloud.com, poltardunia.dev plus two other host names have IP numbers in common with certainty.dev.

Name Servers

The NS records for certainty.dev delegate to greg.ns.cloudflare.com and pam.ns.cloudflare.com.

The name server configuration of certainty.dev is shared with other domains, for instance piclead.com, phoneme-synthesis.pages.dev, terrae.my and two others.

The name servers of certainty.dev overlap at least partially with those of other domains — among them narrowmode.com, putrirahsia.com, die-ky-gruppe.de and two more.

These name servers commonly appear alongside the name servers adaline.ns.cloudflare.com and vasilii.ns.cloudflare.com.

Hosts with 6 IP addresses each:

greg.ns.cloudflare.com maps to 108.162.193.115, 172.64.33.115, 173.245.59.115 and 3 additional IP addresses.

pam.ns.cloudflare.com maps to 108.162.192.138, 172.64.32.138, 173.245.58.138 and 3 additional IP addresses.

Mail Servers

Mail for certainty.dev is routed through three mail servers — smtp.google.com, aspmx.l.google.com and alt2.aspmx.l.google.com.

At least some of the mail servers used by certainty.dev are shared with other domains: puja-patel.com, studioh-hospitality.com, jarassier.info and two others among them.

It is common to find these mail servers paired with the mail servers alt1.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com, as well as two others.

Hosts with 9 IP addresses each:

smtp.google.com maps to 64.233.180.26, 64.233.180.27, 142.251.179.27 and 6 additional IP addresses.

Host names pointing to two IP addresses:

The A records for aspmx.l.google.com return 142.251.16.27 and 2607:f8b0:4004:c25::1a.

The A records for alt2.aspmx.l.google.com return 172.253.116.27 and 2a00:1450:400b:c02::1b.