mail.donotopenuntil.com - robtex.com

mail.donotopenuntil.com

CNAMEmail.stackmail.com
DNSSEC⚠️ Not signed
A185.151.28.68🇬🇧 TWENTYI185.151.28.0/24
PTRsmtp.stackmail.com
A185.151.28.84🇬🇧 TWENTYI185.151.28.0/24
A185.151.28.85🇬🇧 TWENTYI185.151.28.0/24

donotopenuntil.com

DNSSEC⚠️ Not signed
A2a07:7800::218🇬🇧 TWENTYI2a07:7800::/48
A185.146.167.202🇬🇧 TWENTYI185.146.167.0/24
NSns1.stackdns.com ⭐
NSns2.stackdns.com
NSns3.stackdns.com
NSns4.stackdns.com
MXmx.stackmail.com ⭐
TXTv=spf1 include:spf.stackmail.com a mx -all
SOAns1.stackdns.comhostmaster@stackdns.com serial=1731632349

Previously MX for

donotopenuntil.com

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DNS History

2 records (1 active, 1 former)

202120222023202420252026A192.185.169.141CNAMEmail.stackmail.com
○A192.185.169.1412020-03-22 → 2020-03-22 · 2 obs
● 2020-03-22 12:29:20
○ 2026-03-27 19:04:10
●CNAMEmail.stackmail.com2026-03-27 → 2026-03-27 · 1 obs
● 2026-03-27 19:04:10

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
donotopenuntil.comns1.stackdns.com, ns2.stackdns.com, ns3.stackdns.com, ns4.stackdns.com4 records

✅ Authoritative Response

Server:104.196.137.209

NS records: ns1.stackdns.com, ns2.stackdns.com, ns3.stackdns.com, ns4.stackdns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for donotopenuntil.com (unsigned zone)

⏱️ Timing

Total: 154ms | Queries: -

📄 Records

TypeCountSample Data
CNAME1mail.stackmail.com

📌 Glue Records Collected

Total: 4

Out-of-bailiwick: 4 (ns1.stackdns.com, ns2.stackdns.com, ns3.stackdns.com...)

Analysis

IP Addresses

mail.donotopenuntil.com points to three IP numbers: 185.151.28.68, 185.151.28.84 and 185.151.28.85.

Other host names including smtp.stackmail.com, imap.stackmail.com, 185-151-28-84.ptr4.stackcp.net, mail.stackmail.com and 185-151-28-85.ptr4.stackcp.net share IP numbers with mail.donotopenuntil.com.