serczer.pl - robtex.com
serczer.pl
| DNSSEC | ⚠️ Not signed | ||||||
| A | 178.21.137.138🇵🇱 SerczerNET178.21.136.0/21 SERCZERNET-IP | ||||||
| PTR | dns1.serczer.pl | ||||||
| NS | dns1.serczer.pl ⭐ | ||||||
| A | 178.21.137.138🇵🇱 SerczerNET178.21.136.0/21 SERCZERNET-IP | ||||||
| PTR | dns1.serczer.pl | ||||||
| NS | fns1.42.pl | ||||||
| A | 79.98.145.34🇵🇱 NitroNet79.98.144.0/21 Nitronet Sp. z o.o. | ||||||
| NS | fns2.42.pl | ||||||
| A | 2001:41d0:701:1100::66c🇩🇪 OVH2001:41d0::/32 IPv6 | ||||||
| PTR | fns2.42.pl | ||||||
| A | 51.38.99.90🇫🇷 OVH51.38.0.0/16 | ||||||
| PTR | fns2.42.pl | ||||||
| MX | mail1.serczer.pl ⭐ | ||||||
| A | 178.21.137.140🇵🇱 SerczerNET178.21.136.0/21 SERCZERNET-IP | ||||||
| PTR | mail1.serczer.pl | ||||||
| TXT | google-site-verification=p4xSjDU3ZsBwLcdbryzVSELrG5H822IY8bvJcDl0uP0 | ||||||
| TXT | v=spf1 mx ip4:178.21.137.140 a:mail1.serczer.pl include:_spf.google.com ~all | ||||||
| SOA | dns1.serczer.plroot@dns1.serczer.pl 2025-05-08 #1 | ||||||
pl
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a-dns.pl ⭐ | ||||||
| NS | b-dns.pl | ||||||
| NS | d-dns.pl | ||||||
| NS | f-dns.pl | ||||||
| NS | h-dns.pl | ||||||
| NS | j-dns.pl | ||||||
| TXT | ccTLD of Poland | ||||||
| SOA | a-dns.pldnsmaster@nask.pl serial=1778654117 | ||||||
Subdomains
serczernet-cynk-fe2-178-21-136-82.serczer.pl |
neo.serczer.pl |
yama.serczer.pl |
mail1.serczer.pl |
dns1.serczer.pl |
Same first word
serczer.pl |
DNS History
9 records (5 active, 4 former)
●NSdns1.serczer.pl2009-01-22 → 2026-05-14 · 2 obs
● 2026-05-14 10:26:28
○NSdsr.serczer.pl2009-01-22 → 2009-01-22 · 3 obs
○ 2015-06-30 05:50:18
○ 2026-05-14 10:26:28
●NSfns1.42.pl2015-06-30 → 2026-05-14 · 3 obs
● 2015-06-30 05:50:18
● 2026-05-14 10:26:28
●NSfns2.42.pl2015-06-30 → 2026-05-14 · 3 obs
● 2015-06-30 05:50:18
● 2026-05-14 10:26:28
○NSleon.biatel.com.pl2009-01-22 → 2009-01-22 · 3 obs
○ 2015-06-30 05:50:18
○ 2026-05-14 10:26:28
○NSns.tpnet.pl2009-01-22 → 2009-01-22 · 3 obs
○ 2015-06-30 05:50:18
○ 2026-05-14 10:26:28
●MXmail1.serczer.pl2009-01-22 → 2026-05-14 · 2 obs
● 2026-05-14 10:26:28
●A178.21.137.1382015-06-30 → 2026-05-14 · 3 obs
● 2015-06-30 05:50:18
● 2026-05-14 10:26:28
○A80.51.160.852009-01-22 → 2009-01-22 · 3 obs
○ 2015-06-30 05:50:18
○ 2026-05-14 10:26:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| pl | a-dns.pl, b-dns.pl, d-dns.pl, f-dns.pl... | - |
| serczer.pl | dns1.serczer.pl, fns1.42.pl, fns2.42.pl | 4 records |
✅ Authoritative Response
Server:178.21.137.138
NS records: dns1.serczer.pl, fns1.42.pl, fns2.42.pl
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for serczer.pl (unsigned zone)
⏱️ Timing
Total: 497ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 178.21.137.138 |
| NS | 3 | fns1.42.pl, dns1.serczer.pl... |
| MX | 1 | mail1.serczer.pl (pri: 10) |
| TXT | 2 | v=spf1 mx ip4:178.21.137.140 a:mail1.ser, google-site-verification=p4xSjDU3ZsBwLcd |
| SOA | 1 | dns1.serczer.pl root.dns1.serczer.pl |
📌 Glue Records Collected
Total: 4
In-bailiwick: 1 (dns1.serczer.pl)
Out-of-bailiwick: 3 (fns1.42.pl, fns2.42.pl, fns2.42.pl)
Analysis
Hierarchy
serczer.pl is a parent of serczernet-cynk-fe2-178-21-136-82.serczer.pl, neo.serczer.pl, yama.serczer.pl, mail1.serczer.pl and dns1.serczer.pl.
IP Addresses
serczer.pl resolves to a single IP: 178.21.137.138.
Other host names, for instance, serczernet.pl, dns1.serczer.pl, neo.serczer.pl and dns1.serczernet.pl share IP numbers with serczer.pl.
Name Servers
serczer.pl delegates to three name servers: fns1.42.pl, fns2.42.pl and dns1.serczer.pl.
serczer.pl shares some name servers with other domains, for example leonek.org, paulus-foto.pl, rwd195.prospect.pl, pocztaksiazkowa.pl and maximo.pl.
These name servers are often used together with ns1.he.net, ns2.afraid.org, ns2.he.net, ns3.he.net, ns4.he.net, ns5.he.net, ns1.itservice4u.pl, ns.tvk.pl and ns.tvk.wroc.pl.
Host names with two IP numbers: fns2.42.pl points to 2001:41d0:701:1100::66c and 51.38.99.90.
Host names with one IP number: fns1.42.pl points to 79.98.145.34 and dns1.serczer.pl points to 178.21.137.138.
Mail Servers
serczer.pl is handled by a single mail server, mail1.serczer.pl.
Host name mail1.serczer.pl points to IP 178.21.137.140.