jrcomputer.pl - robtex.com
jrcomputer.pl
| DNSSEC | ⚠️ Not signed | ||||||
| A | 136.243.254.121🇩🇪 Hetzner136.243.0.0/16 HETZNER-RZ-BLK-ERX3 | ||||||
| PTR | s602.calserver.eu | ||||||
| NS | ns1.cal.pl ⭐ | ||||||
| A | 45.138.106.10🇨🇿 WEDOS-GLOBAL45.138.106.0/24 WEDOS Global | ||||||
| PTR | ns1.cal.pl | ||||||
| NS | ns2.cal.pl | ||||||
| A | 185.8.238.10🇨🇿 WEDOS-GLOBAL185.8.238.0/24 WEDOS Global | ||||||
| PTR | ns2.cal.pl | ||||||
| MX | mail.jrcomputer.pl ⭐ | ||||||
| A | 136.243.254.121🇩🇪 Hetzner136.243.0.0/16 HETZNER-RZ-BLK-ERX3 | ||||||
| PTR | s602.calserver.eu | ||||||
| TXT | v=spf1 a mx ip4:167.235.187.71 include:_spf.cal.pl -all | ||||||
| SOA | ns1.cal.plhostmaster@jrcomputer.pl 2025-10-09 #5 | ||||||
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=1773473727 | ||||||
Previously MX for
jrcomputer.pl |
Subdomains
mail.jrcomputer.pl |
Same first word
jrcomputer.com.br |
jrcomputer.pl |
Similar names
DNS History
9 records (4 active, 5 former)
○NSdns.home.pl2015-05-29 → 2018-10-08 · 4 obs
● 2018-10-08 23:18:44
○ 2026-02-15 22:10:58
○ 2026-03-23 14:33:48
○NSdns2.home.pl2015-05-29 → 2018-10-08 · 4 obs
● 2018-10-08 23:18:44
○ 2026-02-15 22:10:58
○ 2026-03-23 14:33:48
○NSdns3.home.pl2015-05-29 → 2018-10-08 · 4 obs
● 2018-10-08 23:18:44
○ 2026-02-15 22:10:58
○ 2026-03-23 14:33:48
●NSns1.cal.pl2026-02-15 → 2026-03-23 · 3 obs
● 2026-02-15 22:10:58
● 2026-03-23 14:33:48
●NSns2.cal.pl2026-02-15 → 2026-03-23 · 3 obs
● 2026-02-15 22:10:58
● 2026-03-23 14:33:48
○MXjrcomputer.pl2015-05-29 → 2018-10-08 · 4 obs
● 2018-10-08 23:18:44
○ 2026-02-15 22:10:58
○ 2026-03-23 14:33:48
●MXmail.jrcomputer.pl2026-02-15 → 2026-03-23 · 3 obs
● 2026-02-15 22:10:58
● 2026-03-23 14:33:48
●A136.243.254.1212026-02-15 → 2026-03-23 · 3 obs
● 2026-02-15 22:10:58
● 2026-03-23 14:33:48
○A79.96.92.612015-05-29 → 2018-10-08 · 4 obs
● 2018-10-08 23:18:44
○ 2026-02-15 22:10:58
○ 2026-03-23 14:33:48
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| pl | h-dns.pl, d-dns.pl, a-dns.pl, b-dns.pl... | - |
| jrcomputer.pl | ns1.cal.pl, ns2.cal.pl | 2 records |
✅ Authoritative Response
Server:185.8.238.10
NS records: ns1.cal.pl, ns2.cal.pl
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for jrcomputer.pl (unsigned zone)
⏱️ Timing
Total: 304ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 136.243.254.121 |
| NS | 2 | ns2.cal.pl, ns1.cal.pl |
| MX | 1 | mail.jrcomputer.pl (pri: 10) |
| TXT | 1 | v=spf1 a mx ip4:167.235.187.71 include:_ |
| SOA | 1 | ns1.cal.pl hostmaster.jrcomputer.pl |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns1.cal.pl, ns2.cal.pl)
Analysis
Hierarchy
jrcomputer.pl is the parent of mail.jrcomputer.pl.
IP Addresses
jrcomputer.pl points to IP number 136.243.254.121.
For instance, other host names mail.trueblue.pl, mail.spala.info.pl, mail.aivento.com, mail.swiatalkoholipolska.pl and mail.fototeam.pl share IP numbers with jrcomputer.pl.
Name Servers
jrcomputer.pl is delegated to two name servers: ns1.cal.pl and ns2.cal.pl.
jrcomputer.pl uses the same name server setup as other domains such as rakus.pl, ewd.com.pl, elbet.net.pl, ptpaio.pl and naszdom.edu.pl.
jrcomputer.pl shares name servers with other domains at least partially, for instance strellas.com, fabrykafilmowa.pl and ares.cal.pl.
Host names with one IP number:
ns1.cal.pl points to: 45.138.106.10.
ns2.cal.pl points to: 185.8.238.10.
Mail Servers
jrcomputer.pl is handled by a single mail server, mail.jrcomputer.pl.
mail.jrcomputer.pl points to a single IP: 136.243.254.121.