gnu.org.pl - dns.ninja
gnu.org.pl
| DNSSEC | ⚠️ Not signed | ||||||
| A | 217.73.31.133🇸🇰 VNET-AS217.73.16.0/20 VNET a.s. | ||||||
| PTR | mordor.linux.net.pl | ||||||
| NS | fns1.42.pl ⭐ | ||||||
| A | 79.98.145.34🇵🇱 NitroNet79.98.144.0/21 Nitronet Sp. z o.o. | ||||||
| NS | fns2.42.pl ⚠️ Not in parent delegation | ||||||
| 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 | ||||||
| NS | ns1.he.net | ||||||
| A | 2001:470:100::2🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | ns1.he.net | ||||||
| A | 216.218.130.2🇺🇸 HURRICANE216.218.128.0/17 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | ns1.he.net | ||||||
| NS | ns2.he.net | ||||||
| A | 2001:470:200::2🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | ns2.he.net | ||||||
| A | 216.218.131.2🇺🇸 HURRICANE216.218.128.0/17 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | ns2.he.net | ||||||
| NS | ns3.he.net | ||||||
| A | 2001:470:300::2🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | ns3.he.net | ||||||
| A | 216.218.132.2🇺🇸 HURRICANE216.218.128.0/17 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | ns3.he.net | ||||||
| NS | ns4.he.net | ||||||
| A | 2001:470:400::2🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | ns4.he.net | ||||||
| A | 216.66.1.2🇺🇸 HURRICANE216.66.0.0/19 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | ns4.he.net | ||||||
| NS | ns5.he.net | ||||||
| A | 2001:470:500::2🇺🇸 HURRICANE2001:470::/32 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | ns5.he.net | ||||||
| A | 216.66.80.18🇺🇸 HURRICANE216.66.80.0/20 Hurricane Electric 55 South Market St San Jose, CA | ||||||
| PTR | ns5.he.net | ||||||
| MX | vmx.kernel.net.pl ⭐ | ||||||
| A | 217.73.31.12🇸🇰 VNET-AS217.73.16.0/20 VNET a.s. | ||||||
| PTR | vmx.kernel.net.pl | ||||||
| TXT | v=spf1 ip4:217.73.31.12 ip4:82.177.112.45 include:_spf.google.com ~all | ||||||
| SOA | fns1.42.plfreedns-admin+191635@42.pl 2100-01-25 #19 | ||||||
org.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=1786861867 | ||||||
WOT: SAFE (50/100)
Same first word
Similar names
DNS History
11 records (9 active, 2 former)
○NSdns.kernel.net.pl2015-08-22 → 2017-01-16 · 4 obs
● 2017-01-16 09:48:54
○ 2018-07-19 11:58:26
○ 2026-08-17 04:17:42
●NSfns1.42.pl2018-07-19 → 2026-08-17 · 3 obs
● 2018-07-19 11:58:26
● 2026-08-17 04:17:42
●NSfns2.42.pl2018-07-19 → 2026-08-17 · 3 obs
● 2018-07-19 11:58:26
● 2026-08-17 04:17:42
●NSns1.he.net2026-02-17 → 2026-08-17 · 3 obs
● 2026-02-17 14:21:42
● 2026-08-17 04:17:42
●NSns2.he.net2026-02-17 → 2026-08-17 · 3 obs
● 2026-02-17 14:21:42
● 2026-08-17 04:17:42
●NSns3.he.net2026-02-17 → 2026-08-17 · 3 obs
● 2026-02-17 14:21:42
● 2026-08-17 04:17:42
●NSns4.he.net2026-02-17 → 2026-08-17 · 3 obs
● 2026-02-17 14:21:42
● 2026-08-17 04:17:42
●NSns5.he.net2026-02-17 → 2026-08-17 · 3 obs
● 2026-02-17 14:21:42
● 2026-08-17 04:17:42
○NSvenus.wis.pk.edu.pl2015-08-22 → 2017-01-16 · 4 obs
● 2017-01-16 09:48:54
○ 2018-07-19 11:58:26
○ 2026-08-17 04:17:42
●MXvmx.kernel.net.pl2015-08-22 → 2026-08-17 · 2 obs
● 2026-08-17 04:17:42
●A217.73.31.1332015-08-22 → 2026-08-17 · 2 obs
● 2026-08-17 04:17:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| pl | f-dns.pl, d-dns.pl, j-dns.pl, a-dns.pl... | - |
| gnu.org.pl | ns4.he.net, ns1.he.net, fns1.42.pl, ns2.he.net... | - |
✅ Authoritative Response
Server:216.66.1.2
NS records: ns4.he.net, ns1.he.net, fns1.42.pl, ns2.he.net, ns3.he.net, ns5.he.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for gnu.org.pl (unsigned zone)
⏱️ Timing
Total: 712ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 217.73.31.133 |
| NS | 7 | fns1.42.pl, ns1.he.net... |
| MX | 1 | vmx.kernel.net.pl (pri: 10) |
| TXT | 1 | v=spf1 ip4:217.73.31.12 ip4:82.177.112.4 |
| SOA | 1 | fns1.42.pl freedns-admin+191635.42.pl |
Analysis
IP Addresses
gnu.org.pl directs to one IP number, which is 217.73.31.133.
Among the host names that share IP numbers with gnu.org.pl are janosik.net, mordor.linux.net.pl, linux.net.pl and two others.
Name Servers
gnu.org.pl carries NS records listing 7 name servers — ns1.he.net, ns2.he.net, ns3.he.net and 4 others.
There is at least partial name server overlap between gnu.org.pl and other domains — 19.186.185.in-addr.arpa, jenkins.se, turing.org and two more among them.
These name servers tend to appear in combination with the name servers ns5.he.net, ns4.he.net, fns1.42.pl and fns2.42.pl.
Hosts with two IP numbers each:
The A records for ns1.he.net return 216.218.130.2 and 2001:470:100::2.
The A records for ns2.he.net return 216.218.131.2 and 2001:470:200::2.
The A records for ns3.he.net return 216.218.132.2 and 2001:470:300::2.
The A records for ns4.he.net return 216.66.1.2 and 2001:470:400::2.
The A records for ns5.he.net return 216.66.80.18 and 2001:470:500::2.
The A records for fns2.42.pl return 51.38.99.90 and 2001:41d0:701:1100::66c.
Hosts that resolve to one IP address:
fns1.42.pl resolves to the IP address 79.98.145.34.
Mail Servers
gnu.org.pl routes its mail through a single mail server, vmx.kernel.net.pl.
gnu.org.pl and other domains — 7thguard.com for instance — share at least some mail servers.
It is common to find these mail servers paired with the mail servers an2.kernel.pl.
vmx.kernel.net.pl resolves to 217.73.31.12 and no other IP number.