mail.cert.dev - robtex.com

mail.cert.dev

DNSSEC⚠️ Not signed
A2a03:6f00:a::1:4004🇷🇺 TimeWeb-AS2a03:6f00:a::/48
PTRmail.cert.dev
A81.19.135.20🇷🇺 TimeWeb-AS81.19.135.0/24
TXTv=spf1 a -all

cert.dev

DNSSEC🔒 Signed (DS record present)
NSdean.ns.cloudflare.com ⭐
NSsimone.ns.cloudflare.com
MXmail.cert.dev ⭐
TXTv=spf1 mx -all
SOAdean.ns.cloudflare.comdns@cloudflare.com serial=2399914119
📈 Tranco rank: #214,485

PTR for

20.135.19.81.in-addr.arpa
4.0.0.4.1.0.0.0.0.0.0.0.0.0.0.0.0.0.0.0.a.0.0.0.0.0.f.6.3.0.a.2.ip6.arpa

MX for

cert.dev

Same first word

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mail.nhs.uk
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mail.as
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mail.org.br
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mail.edu.ru
mail.edu.az
mail.global
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mail.hu.net
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mail.se
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mail.csx.cc
mail.basicserver.io
mail.coupons
mail.js.org
mail.ch
mail.partners
mail.mt
mail.golffan.us
mail.town
mail.sh
mail.nom.za
mail.com.br
mail.com.ph
mail.co.ua
mail.bike
mail.gr
mail.srv.br
mail.dyn-vpn.de
mail.serveminecraft.net
mail.gov.cn
mail.staba.jp
mail.pinoko.jp

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DNS History

2 records (2 active, 0 former)

A2a03:6f00:a::1:400481.19.135.20
●A2a03:6f00:a::1:40042026-03-24 → 2026-03-25 · 2 obs
● 2026-03-24 21:53:40
● 2026-03-25 10:41:28
●A81.19.135.202026-03-24 → 2026-03-25 · 2 obs
● 2026-03-24 21:53:40
● 2026-03-25 10:41:28

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
devns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com...10 records
cert.devdean.ns.cloudflare.com, simone.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.34.26

NS records: dean.ns.cloudflare.com, simone.ns.cloudflare.com

🔒 DNSSEC Status

🔐 Secure (DNSSEC validated)

Chain of trust verified from root to domain

⏱️ Timing

Total: 262ms | Queries: -

📄 Records

TypeCountSample Data
A181.19.135.20
AAAA12a03:6f00:a::1:4004
TXT1v=spf1 a -all

📌 Glue Records Collected

Total: 10

Out-of-bailiwick: 10 (ns-tld5.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com...)

Analysis

Mail Server Role

mail.cert.dev serves as the mail server for cert.dev.

IP Addresses

The entity mail.cert.dev points to two IP numbers: 2a03:6f00:a::1:4004 and 81.19.135.20.