f1.szu.pl - robtex.com
f1.szu.pl
| DNSSEC | ⚠️ Not signed | ||||||
| A | 91.234.217.72🇵🇱 SPRINT-SDC91.234.217.0/24 JEE.PL, Zywiec | ||||||
| PTR | srv-91-234-217-72.wilan.pl | ||||||
| NS | dns.szu.pl ⭐ ⚠️ Not in parent delegation | ||||||
| A | 91.234.217.4🇵🇱 SPRINT-SDC91.234.217.0/24 JEE.PL, Zywiec | ||||||
| PTR | srv-91-234-217-4.wilan.pl | ||||||
| NS | ns2.szu.pl ⚠️ Not in parent delegation | ||||||
| A | 91.234.217.86🇵🇱 SPRINT-SDC91.234.217.0/24 JEE.PL, Zywiec | ||||||
| PTR | srv-91-234-217-86.wilan.pl | ||||||
| MX | f1.szu.pl ⭐ | ||||||
| A | 91.234.217.72🇵🇱 SPRINT-SDC91.234.217.0/24 JEE.PL, Zywiec | ||||||
| PTR | srv-91-234-217-72.wilan.pl | ||||||
| TXT | v=spf1 91.234.217.0/24 a mx include:_spf.google.com ~all | ||||||
| SOA | dns.szu.pladmin@szu.pl serial=20111227 | ||||||
szu.pl
| DNSSEC | ⚠️ Not signed | ||||||
| A | 91.234.217.80🇵🇱 SPRINT-SDC91.234.217.0/24 JEE.PL, Zywiec | ||||||
| NS | dns.szu.pl ⭐ | ||||||
| NS | ns2.szu.pl ⚠️ Not in parent delegation | ||||||
| NS | ns3.boo.pl ⚠️ Not in zone NS records | ||||||
| MX | gwmail.wilan.pl ⭐ | ||||||
| SOA | dns.szu.pladmin@szu.pl 2006-03-29 #3 | ||||||
rank #521861 globally
rank #3900 in the tld
WOT: SAFE (61/100)
Previously MX for
f1.szu.pl |
Same first word
Similar names
1f.ca |
1f.co.kr |
1f.ro |
1f.net |
1f.cn |
1f.ws |
1f.su |
1f.eu |
1f.com.cn |
1f.be |
1f.hu |
1f.biz |
1f.pl |
1f.io |
1f.gg |
1f.com |
1f.dk |
1f.com.tw |
1f.pw |
1f.game |
1f.ai |
1f.nl |
1f.ru |
1f.no |
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1f.com.ua |
1f.fi |
DNS History
5 records (4 active, 1 former)
●NSns2.szu.pl2015-06-01 → 2026-05-11 · 5 obs
● 2016-08-04 12:04:10
○ 2026-03-05 01:49:56
● 2026-05-11 15:42:22
● 2026-05-11 15:42:24
●MXf1.szu.pl2015-06-01 → 2026-05-11 · 5 obs
● 2016-08-04 12:04:10
○ 2026-03-05 01:49:56
● 2026-05-11 15:42:22
● 2026-05-11 15:42:24
○A31.135.194.722015-06-01 → 2016-08-04 · 4 obs
● 2016-08-04 12:04:10
○ 2026-03-05 01:49:56
○ 2026-05-11 15:42:24
●A91.234.217.722026-03-05 → 2026-05-11 · 3 obs
● 2026-03-05 01:49:56
● 2026-05-11 15:42:24
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| pl | f-dns.pl, b-dns.pl, j-dns.pl, h-dns.pl... | - |
| szu.pl | ns3.boo.pl, dns.szu.pl | 1 record |
✅ Authoritative Response
Server:91.234.217.4
NS records: ns3.boo.pl, dns.szu.pl
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for szu.pl (unsigned zone)
⏱️ Timing
Total: 430ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 91.234.217.72 |
| NS | 2 | dns.szu.pl, ns2.szu.pl |
| MX | 1 | f1.szu.pl (pri: 10) |
| TXT | 1 | v=spf1 91.234.217.0/24 a mx include:_spf |
| SOA | 1 | dns.szu.pl admin.szu.pl |
📌 Glue Records Collected
Total: 1
In-bailiwick: 1 (dns.szu.pl)
Analysis
IP Addresses
f1.szu.pl points to an IP address: 91.234.217.72.
Name Servers
Two name servers dns.szu.pl and ns2.szu.pl handle the delegation for f1.szu.pl.
f1.szu.pl shares the same name server setup as other domains, for instance u.szu.pl, fifalive.szu.pl, mohaasparingi.szu.pl, sww.w.szu.pl and jamaicainn.szu.pl.
f1.szu.pl at least partially shares name servers with other domains, for instance openkantor.pl, openkontakt.com, bia.pl, szu.pl and biznesoferty.com.
These name servers are commonly used alongside ns3.boo.pl.
Host names with one IP:
dns.szu.pl points to: 91.234.217.4
ns2.szu.pl points to: 91.234.217.86
Mail Servers
f1.szu.pl is handled by a single mail server.
The host name f1.szu.pl points to IP 91.234.217.72.