4usystem.com.pl - robtex.com
4usystem.com.pl
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 85.128.134.239🇵🇱 NETARTGROUP85.128.128.0/17 | ||||||
| PTR | static-akc239.rev.nazwa.pl | ||||||
| NS | ns1.nazwa.pl ⭐ | ||||||
| A | 77.55.125.10🇵🇱 NETARTGROUP77.55.125.0/24 | ||||||
| PTR | ns1.nazwa.pl | ||||||
| NS | ns2.nazwa.pl | ||||||
| A | 77.55.126.10🇵🇱 NETARTGROUP77.55.126.0/24 | ||||||
| PTR | ns2.nazwa.pl | ||||||
| NS | ns3.nazwa.pl | ||||||
| A | 77.55.127.10🇵🇱 NETARTGROUP77.55.127.0/24 | ||||||
| PTR | ns3.nazwa.pl | ||||||
| MX | 4usystem.com.pl ⭐ 🔒 | ||||||
| A | 85.128.134.239🇵🇱 NETARTGROUP85.128.128.0/17 | ||||||
| PTR | static-akc239.rev.nazwa.pl | ||||||
| TXT | v=spf1 mx a ~all | ||||||
| SOA | ns1.nazwa.plbiuro@nazwa.pl serial=2008133200 | ||||||
com.pl
| DNSSEC | ⚠️ Not signed | ||||||
| NS | a-dns.pl ⭐ ⚠️ Not in parent delegation | ||||||
| NS | b-dns.pl ⚠️ Not in parent delegation | ||||||
| NS | d-dns.pl ⚠️ Not in parent delegation | ||||||
| NS | f-dns.pl ⚠️ Not in parent delegation | ||||||
| NS | h-dns.pl ⚠️ Not in parent delegation | ||||||
| NS | j-dns.pl ⚠️ Not in parent delegation | ||||||
| SOA | a-dns.pldnsmaster@nask.pl serial=1776234734 | ||||||
Previously MX for
4usystem.com.pl |
Same first word
Similar names
system4u.eu |
system4u.net |
system4u.co |
system4u.de |
system4u.biz |
system4u.in |
system4u.info |
system4u.co.nz |
system4u.mobi |
system4u.com |
system4u.cz |
DNS History
5 records (5 active, 0 former)
●MX4usystem.com.pl2026-02-16 → 2026-04-15 · 7 obs
● 2026-02-28 08:43:44
○ 2026-03-08 05:42:00
● 2026-03-27 16:56:48
● 2026-04-09 20:41:58
○ 2026-04-12 16:31:20
● 2026-04-15 18:53:14
●A85.128.134.2392026-02-16 → 2026-04-15 · 4 obs
● 2026-04-09 20:41:58
○ 2026-04-12 16:31:20
● 2026-04-15 18:53:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| pl | f-dns.pl, b-dns.pl, j-dns.pl, h-dns.pl... | - |
| 4usystem.com.pl | ns3.nazwa.pl, ns2.nazwa.pl, ns1.nazwa.pl | - |
✅ Authoritative Response
Server:77.55.126.10
NS records: ns3.nazwa.pl, ns2.nazwa.pl, ns1.nazwa.pl
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 598ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 85.128.134.239 |
| NS | 3 | ns2.nazwa.pl, ns1.nazwa.pl... |
| MX | 1 | 4usystem.com.pl (pri: 10) |
| TXT | 1 | v=spf1 mx a ~all |
| SOA | 1 | ns1.nazwa.pl biuro.nazwa.pl |
Analysis
IP Addresses
4usystem.com.pl points to IP number: 85.128.134.239.
Other host names such as hinduja.pl, woldar.com, tri-magic.com, clubkeno.eu and adtaily.pl share IPs with 4usystem.com.pl.
Name Servers
4usystem.com.pl is delegated to three name servers: ns1.nazwa.pl, ns2.nazwa.pl and ns3.nazwa.pl.
4usystem.com.pl at least partially shares name servers with other domains, for instance ejubiler.net, anplus.com.pl, play-internet.com, factory-pozn.nazwa.pl and abbyy.pl.
These name servers are commonly used together with ns1.netart.pl, ns2.netart.pl and ns3.netart.pl.
Host names with a single IP:
ns1.nazwa.pl points to: 77.55.125.10.
ns2.nazwa.pl points to: 77.55.126.10.
ns3.nazwa.pl points to: 77.55.127.10.
Mail Servers
4usystem.com.pl is handled by a single mail server, 4usystem.com.pl.
4usystem.com.pl points to a single IP: 85.128.134.239.