mail.4up.pl - robtex.com

mail.4up.pl

DNSSEC⚠️ Not signed
A91.227.122.57🇵🇱 UNIXSTORM-AS91.227.122.0/23 Unix Storm Michal Gottlieb
PTRk9.unixstorm.org

4up.pl

DNSSEC⚠️ Not signed
A91.227.122.57🇵🇱 UNIXSTORM-AS91.227.122.0/23 Unix Storm Michal Gottlieb
NSns1.unixstorm.org ⭐
NSns2.unixstorm.org
MXmail.4up.pl ⭐
TXTv=spf1 a mx ip4:91.227.122.57 ~all
SOAns1.unixstorm.orghostmaster@4up.pl 2026-05-30 #3

MX for

4up.pl

Same first word

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DNS History

2 records (1 active, 1 former)

20162017201820192020202120222023202420252026A91.227.122.5778.46.37.198
○A78.46.37.1982015-06-17 → 2016-11-24 · 4 obs
● 2015-06-17 14:27:00
● 2016-11-24 18:20:56
○ 2017-01-09 08:01:12
○ 2026-06-19 20:09:12
●A91.227.122.572026-06-10 → 2026-06-19 · 3 obs
○ 2017-01-09 08:01:12
● 2026-06-10 06:02:26
● 2026-06-19 20:09:12

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
pla-dns.pl, b-dns.pl, d-dns.pl, f-dns.pl...-
4up.plns1.unixstorm.org, ns2.unixstorm.org-

✅ Authoritative Response

Server:91.227.123.50

NS records: ns1.unixstorm.org, ns2.unixstorm.org

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for 4up.pl (unsigned zone)

⏱️ Timing

Total: 1079ms | Queries: -

📄 Records

TypeCountSample Data
A191.227.122.57

Analysis

Mail Server Role

The mail server mail.4up.pl processes email for 4up.pl.

IP Addresses

mail.4up.pl resolves to just one IP address, 91.227.122.57.

Two other host names, along with mail.informacje.nl, chodkiewicz.pl and nagraba.pl, also share IP numbers with mail.4up.pl.