rtfm.cz - robtex.com
rtfm.cz
cz
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.ns.nic.cz ⭐ 🔒 | ||||||
| NS | b.ns.nic.cz 🔒 | ||||||
| NS | c.ns.nic.cz 🔒 | ||||||
| NS | d.ns.nic.cz 🔒 | ||||||
| SOA | a.ns.nic.czhostmaster@nic.cz serial=1771291036 | ||||||
Same first word
Similar names
DNS History
13 records (5 active, 8 former)
○NSns.actumg2.cz2015-06-22 → 2017-06-20 · 4 obs
● 2015-06-22 00:37:20
● 2017-06-20 03:21:38
○ 2026-03-23 14:01:40
○NSns.ilikethis.cz2009-01-25 → 2009-01-25 · 3 obs
○ 2015-06-22 00:37:20
○ 2026-03-23 14:01:40
○NSns2.actumg2.cz2015-06-22 → 2017-06-20 · 4 obs
● 2015-06-22 00:37:20
● 2017-06-20 03:21:38
○ 2026-03-23 14:01:40
○NSns2.ilikethis.cz2009-01-25 → 2009-01-25 · 3 obs
○ 2015-06-22 00:37:20
○ 2026-03-23 14:01:40
○MXns.actumg2.cz2015-06-22 → 2017-06-20 · 4 obs
● 2015-06-22 00:37:20
● 2017-06-20 03:21:38
○ 2026-03-23 14:01:40
○MXns.ilikethis.cz2009-01-25 → 2009-01-25 · 3 obs
○ 2015-06-22 00:37:20
○ 2026-03-23 14:01:40
●MXrtfm-cz.mail.protection.outlook.com2026-03-23 → 2026-03-23 · 2 obs
● 2026-03-23 14:01:40
○A213.220.230.532015-06-22 → 2017-06-20 · 4 obs
● 2015-06-22 00:37:20
● 2017-06-20 03:21:38
○ 2026-03-23 14:01:40
○A213.220.232.2392009-01-25 → 2009-01-25 · 3 obs
○ 2015-06-22 00:37:20
○ 2026-03-23 14:01:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cz | c.ns.nic.cz, d.ns.nic.cz, a.ns.nic.cz, b.ns.nic.cz | - |
| rtfm.cz | ns.wedos.cz, ns.wedos.eu, ns.wedos.com, ns.wedos.net | 4 records |
✅ Authoritative Response
Server:99.83.142.9
NS records: ns.wedos.cz, ns.wedos.eu, ns.wedos.com, ns.wedos.net
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 1023ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | ns.wedos.cz, ns.wedos.eu... |
| MX | 1 | rtfm-cz.mail.protection.outlook.com (pri |
| TXT | 1 | v=spf1 include:spf.protection.outlook.co |
| SOA | 1 | ns.wedos.net wedos.wedos.com |
📌 Glue Records Collected
Total: 4
Out-of-bailiwick: 4 (ns.wedos.cz, ns.wedos.cz, ns.wedos.cz...)
Analysis
Name Servers
rtfm.cz is delegated to four name servers: ns.wedos.com, ns.wedos.cz, ns.wedos.eu and ns.wedos.net.
rtfm.cz at least partially shares name servers with other domains, for instance zih.cz, darabags.eu, bartipan.net, benicek.cz and tribunal.cz.
Host names with four IP numbers:
ns.wedos.cz points to: 2a0e:acc0:1::caff:caff:cafb, 2a0e:acc0:2::c:1:c1, 45.138.106.1 and 185.8.238.1
ns.wedos.net points to: 2600:9000:a419:5a54:19f7:a614:36fd:2825, 2600:9000:a705:25bb:c632:5e5a:dd9c:1e46, 75.2.92.86 and 99.83.142.9
Host names with two IP numbers:
ns.wedos.com points to: 2a0e:acc0:1::cafe:cafe:cafe and 45.138.106.0
ns.wedos.eu points to: 2a0e:acc0:2::b:1:b1 and 185.8.238.0
Mail Servers
rtfm.cz is handled by a single mail server, rtfm-cz.mail.protection.outlook.com.
rtfm-cz.mail.protection.outlook.com resolves to eight IP addresses: 2a01:111:f403:ca04::b, 2a01:111:f403:ca04::e, 2a01:111:f403:ca09::1, 2a01:111:f403:ca09::20, 52.101.68.10, 52.101.68.15, 52.101.68.18 and 52.101.73.28.