rtfm.dk - dns.ninja
rtfm.dk
dk
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | b.nic.dk ⭐ | ||||||
| NS | c.nic.dk | ||||||
| NS | h.nic.dk | ||||||
| NS | l.nic.dk | ||||||
| NS | s.nic.dk | ||||||
| NS | t.nic.dk | ||||||
| TXT | DK zone updateEpoch 1785961801localtime Wed Aug 5 22:30:01 2026gmtime Wed Au... | ||||||
| SOA | b.nic.dktech@punktum.dk serial=1785961981 | ||||||
Same first word
Similar names
DNS History
17 records (13 active, 4 former)
○NScaptus.tkw.dk2008-01-26 → 2008-01-26 · 3 obs
○ 2015-08-23 10:36:12
○ 2026-08-05 20:55:36
●NSns1.quickdns.dk2015-08-23 → 2026-08-05 · 3 obs
● 2015-08-23 10:36:12
● 2026-08-05 20:55:36
●NSns2.quickdns.dk2015-08-23 → 2026-08-05 · 3 obs
● 2015-08-23 10:36:12
● 2026-08-05 20:55:36
○NSns2.tkw.dk2008-01-26 → 2008-01-26 · 3 obs
○ 2015-08-23 10:36:12
○ 2026-08-05 20:55:36
●NSns3.quickdns.dk2015-08-23 → 2026-08-05 · 3 obs
● 2015-08-23 10:36:12
● 2026-08-05 20:55:36
●NSns4.quickdns.dk2015-08-23 → 2026-08-05 · 3 obs
● 2015-08-23 10:36:12
● 2026-08-05 20:55:36
●MXalt1.aspmx.l.google.com2015-08-23 → 2026-08-05 · 3 obs
● 2015-08-23 10:36:12
● 2026-08-05 20:55:36
●MXalt2.aspmx.l.google.com2015-08-23 → 2026-08-05 · 3 obs
● 2015-08-23 10:36:12
● 2026-08-05 20:55:36
●MXaspmx.l.google.com2015-08-23 → 2026-08-05 · 3 obs
● 2015-08-23 10:36:12
● 2026-08-05 20:55:36
●MXaspmx2.googlemail.com2015-08-23 → 2026-08-05 · 3 obs
● 2015-08-23 10:36:12
● 2026-08-05 20:55:36
●MXaspmx3.googlemail.com2015-08-23 → 2026-08-05 · 3 obs
● 2015-08-23 10:36:12
● 2026-08-05 20:55:36
●MXaspmx4.googlemail.com2015-08-23 → 2026-08-05 · 3 obs
● 2015-08-23 10:36:12
● 2026-08-05 20:55:36
●MXaspmx5.googlemail.com2015-08-23 → 2026-08-05 · 3 obs
● 2015-08-23 10:36:12
● 2026-08-05 20:55:36
○MXio.stderr.net2008-01-26 → 2008-01-26 · 3 obs
○ 2015-08-23 10:36:12
○ 2026-08-05 20:55:36
●MXpasiphae.stderr.net2015-08-23 → 2026-08-05 · 3 obs
● 2015-08-23 10:36:12
● 2026-08-05 20:55:36
●A173.8.116.1222015-08-23 → 2026-08-05 · 3 obs
● 2015-08-23 10:36:12
● 2026-08-05 20:55:36
○A194.255.237.1672008-01-26 → 2008-01-26 · 3 obs
○ 2015-08-23 10:36:12
○ 2026-08-05 20:55:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| dk | c.nic.dk, b.nic.dk, l.nic.dk, s.nic.dk... | - |
| rtfm.dk | ns1.quickdns.dk, ns2.quickdns.dk, ns3.quickdns.dk, ns4.quickdns.dk | 6 records |
✅ Authoritative Response
Server:185.126.153.42
NS records: ns1.quickdns.dk, ns2.quickdns.dk, ns3.quickdns.dk, ns4.quickdns.dk
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for rtfm.dk (unsigned zone)
⏱️ Timing
Total: 593ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 173.8.116.122 |
| NS | 4 | ns4.quickdns.dk, ns1.quickdns.dk... |
| MX | 8 | alt2.aspmx.l.google.com (pri: 5), aspmx2.googlemail.com (pri: 10)... |
| SOA | 1 | ns1.quickdns.dk hostmaster.quickdns.dk |
📌 Glue Records Collected
Total: 6
Out-of-bailiwick: 6 (ns1.quickdns.dk, ns1.quickdns.dk, ns2.quickdns.dk...)
Analysis
IP Addresses
rtfm.dk points to a single IP number: 173.8.116.122.
Other host names, such as hyperion.stderr.net, share IP numbers with rtfm.dk.
Name Servers
rtfm.dk has four authoritative name servers: ns1.quickdns.dk, ns2.quickdns.dk, ns3.quickdns.dk and ns4.quickdns.dk.
The name servers of rtfm.dk overlap at least partially with those of other domains — among them stderr.net, dokiol.dk, gw1.dk and two more.
Host names with two IP numbers:
ns1.quickdns.dk points to 178.62.214.234 and 2a03:b0c0:2:d0::552:9001.
ns3.quickdns.dk points to 178.62.214.234 and 2a03:b0c0:2:d0::552:9001.
Host names pointing to a single IP address:
ns2.quickdns.dk points to 185.126.153.42.
ns4.quickdns.dk points to 185.126.153.42.
ns1.quickdns.dk and ns3.quickdns.dk are host names that each point to 2a03:b0c0:2:d0::552:9001 IP addresses.
ns1.quickdns.dk and ns3.quickdns.dk are host names that each point to 178.62.214.234 IP addresses.
ns2.quickdns.dk and ns4.quickdns.dk are host names that each point to 185.126.153.42 IP addresses.
Mail Servers
rtfm.dk has 8 mail servers — aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com plus 5 other.
rtfm.dk shares mail servers — at least in part — with other domains, including joetsutj.com, ns500671.ns500754.ns500754.ns500671.ns500688.ns500688.ns500705.ns500688.ns500649.ns500291.ns500153.tenderladiesbz.com, ns500731.ns500742.ns500671.ns500742.ns500754.ns500731.ns500742.ns500671.ns500671.ns500705.ns500688.ns500704.ns500671.ns500671.lusty(0x736c7574)z.com and two others.
These mail servers are frequently used alongside mail servers alt2.aspmx.l.google.com, alt1.aspmx.l.google.com, aspmx.l.google.com and 3 other.
Host names with two IP numbers:
aspmx2.googlemail.com points to 108.177.123.27 and 2800:3f0:4003:c0f::1b.
aspmx3.googlemail.com points to 172.253.116.26 and 2a00:1450:400b:c02::1b.
aspmx4.googlemail.com points to 192.178.223.26 and 2a00:1450:4009:c0f::1a.
aspmx5.googlemail.com points to 172.253.157.26 and 2a00:1450:400c:c23::1b.
aspmx.l.google.com points to 142.250.31.26 and 2607:f8b0:4004:c29::1a.
alt1.aspmx.l.google.com points to 108.177.123.26 and 2800:3f0:4003:c0f::1a.
alt2.aspmx.l.google.com points to 172.253.116.26 and 2a00:1450:400b:c02::1a.
Host names pointing to a single IP address:
pasiphae.stderr.net points to 173.8.116.123.
aspmx3.googlemail.com and alt2.aspmx.l.google.com are host names that each point to 172.253.116.26 IP addresses.