certainty.dev - robtex.com

🛡️Domain Reputation CheckBlocklist, phishing & malware status→

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:c07::1a🇺🇸 Google2607:f8b0:4004::/48
PTRbc-in-f26.1e100.net
A172.253.115.26🇺🇸 Google172.253.115.0/24
MXsmtp.google.com ⭐
A2607:f8b0:4004:c23::1a🇺🇸 Google2607:f8b0:4004::/48
PTRyuiadrs-in-f26.1e100.net
A2607:f8b0:4004:c23::1b🇺🇸 Google2607:f8b0:4004::/48
PTRyuiadrs-in-f27.1e100.net
A2607:f8b0:4004:c29::1b🇺🇸 Google2607:f8b0:4004::/48
PTRyuiadum-in-f27.1e100.net
A2607:f8b0:4004:c2d::1a🇺🇸 Google2607:f8b0:4004::/48
PTRry-in-f26.1e100.net
A172.253.62.26🇺🇸 Google172.253.62.0/24
PTRbc-in-f26.1e100.net
A172.253.62.27🇺🇸 Google172.253.62.0/24
PTRbc-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
A192.179.24.27🇺🇸 Google192.178.0.0/15
PTRrz-in-f27.1e100.net
MXalt2.aspmx.l.google.com(5)
A2a00:1450:400b:c02::1a🇮🇪 Google2a00:1450:400b::/48
PTRdj-in-f26.1e100.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=1, name=cloudflare-ech.com
SOAgreg.ns.cloudflare.comdns@cloudflare.com serial=2415613832

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

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certainty.org
certainty.asia
certainty.top
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certainty.lol
certainty.co.th

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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 → 2026-10-07 · 2 obs
● 2026-09-10 22:23:28
● 2026-10-07 10:09:48
●NSpam.ns.cloudflare.com2026-09-10 → 2026-10-07 · 2 obs
● 2026-09-10 22:23:28
● 2026-10-07 10:09:48
●MXalt2.aspmx.l.google.com2026-09-10 → 2026-10-07 · 2 obs
● 2026-09-10 22:23:28
● 2026-10-07 10:09:48
●MXaspmx.l.google.com2026-09-10 → 2026-10-07 · 2 obs
● 2026-09-10 22:23:28
● 2026-10-07 10:09:48
●MXsmtp.google.com2026-09-10 → 2026-10-07 · 2 obs
● 2026-09-10 22:23:28
● 2026-10-07 10:09:48
●A104.21.21.262026-09-10 → 2026-10-07 · 2 obs
● 2026-09-10 22:23:28
● 2026-10-07 10:09:48
●A172.67.196.32026-09-10 → 2026-10-07 · 2 obs
● 2026-09-10 22:23:28
● 2026-10-07 10:09:48
●A2606:4700:3034::ac43:c4032026-09-10 → 2026-10-07 · 2 obs
● 2026-09-10 22:23:28
● 2026-10-07 10:09:48
●A2606:4700:3035::6815:151a2026-09-10 → 2026-10-07 · 2 obs
● 2026-09-10 22:23:28
● 2026-10-07 10:09:48

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
devns-tld1.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld5.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com...-
certainty.devpam.ns.cloudflare.com, greg.ns.cloudflare.com-

✅ Authoritative Response

Server:108.162.192.138

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for certainty.dev (unsigned zone)

⏱️ Timing

Total: 718ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.21.26, 172.67.196.3
AAAA22606:4700:3034::ac43:c403, 2606:4700:3035::6815:151a
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 points to the four IP addresses 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

certainty.dev has two authoritative name servers — 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, hkptest1.com, putrirahsia.com and two more.

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

Hosts with 6 IP addresses each:

greg.ns.cloudflare.com points to 108.162.193.115, 172.64.33.115, 173.245.59.115 and 3 other IP addresses.

pam.ns.cloudflare.com points to 108.162.192.138, 172.64.32.138, 173.245.58.138 and 3 other 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 points to 172.253.62.26, 172.253.62.27, 192.178.155.26 and 6 other IP addresses.

Host names pointing to two IP addresses:

aspmx.l.google.com resolves to 172.253.115.26 and 2607:f8b0:4004:c07::1a.

alt2.aspmx.l.google.com resolves to 172.253.116.27 and 2a00:1450:400b:c02::1a.