katedra.info - robtex.com
katedra.info
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 81.2.196.19🇨🇿 INTERNET-CZ81.2.192.0/18 INTERNET CZ, a.s. | ||||||
| PTR | 19.196.forpsi.net | ||||||
| NS | ns.forpsi.net ⭐ | ||||||
| A | 2001:15e8:101:1::c282🇨🇿 INTERNET-CZ2001:15e8::/32 | ||||||
| PTR | ns.forpsi.net | ||||||
| A | 81.2.194.130🇨🇿 INTERNET-CZ81.2.192.0/18 INTERNET CZ, a.s. | ||||||
| PTR | ns.forpsi.net | ||||||
| NS | ns.forpsi.cz | ||||||
| A | 2001:15e8:201:1::d1b9🇨🇿 INTERNET-CZ2001:15e8::/32 | ||||||
| PTR | ns.forpsi.cz | ||||||
| A | 81.2.209.185🇨🇿 INTERNET-CZ81.2.209.0/24 | ||||||
| PTR | ns.forpsi.cz | ||||||
| NS | ns.forpsi.it | ||||||
| A | 2a00:6d41:2:1::5🇮🇹 ARUBA-ASN2a00:6d41::/32 Aruba S.p.A. IPv6 Network | ||||||
| PTR | ns.forpsi.it | ||||||
| A | 95.110.254.165🇮🇹 ARUBA-ASN95.110.192.0/18 Aruba S.p.A. Network | ||||||
| PTR | host165-254-110-95.serverdedicati.aruba.it | ||||||
| SOA | ns.forpsi.netadmin@forpsi.com 2026-03-13 #2 | ||||||
info
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.info.afilias-nst.info ⭐ | ||||||
| NS | a2.info.afilias-nst.info | ||||||
| NS | b0.info.afilias-nst.org ⚠️ Not in parent delegation | ||||||
| NS | b2.info.afilias-nst.org ⚠️ Not in parent delegation | ||||||
| NS | c0.info.afilias-nst.info | ||||||
| NS | d0.info.afilias-nst.org ⚠️ Not in parent delegation | ||||||
| SOA | a0.info.afilias-nst.infohostmaster@donuts.email serial=1774784431 | ||||||
Previously MX for
katedra.info |
Same first word
Similar names
DNS History
14 records (4 active, 10 former)
●NSns.forpsi.cz2026-03-27 → 2026-03-29 · 3 obs
● 2026-03-27 15:10:22
● 2026-03-29 12:11:00
●NSns.forpsi.it2026-03-27 → 2026-03-29 · 3 obs
● 2026-03-27 15:10:22
● 2026-03-29 12:11:00
●NSns.forpsi.net2026-03-27 → 2026-03-29 · 3 obs
● 2026-03-27 15:10:22
● 2026-03-29 12:11:00
○NSns1.md-pb-iqsv.com2015-07-01 → 2015-07-01 · 3 obs
○ 2015-11-06 21:46:16
○ 2026-03-29 12:11:00
○NSns1.nazwa.pl2016-02-24 → 2016-07-08 · 5 obs
● 2016-02-24 19:13:04
● 2016-07-08 16:41:06
○ 2026-03-27 15:10:22
○ 2026-03-29 12:11:00
○NSns2.md-pb-iqsv.com2015-07-01 → 2015-07-01 · 3 obs
○ 2015-11-06 21:46:16
○ 2026-03-29 12:11:00
○NSns2.nazwa.pl2016-02-24 → 2016-07-08 · 5 obs
● 2016-02-24 19:13:04
● 2016-07-08 16:41:06
○ 2026-03-27 15:10:22
○ 2026-03-29 12:11:00
○NSns3.nazwa.pl2016-02-24 → 2016-07-08 · 5 obs
● 2016-02-24 19:13:04
● 2016-07-08 16:41:06
○ 2026-03-27 15:10:22
○ 2026-03-29 12:11:00
○MXkatedra.info2015-07-01 → 2016-02-24 · 5 obs
○ 2015-11-06 21:46:16
● 2016-02-24 19:13:04
○ 2016-07-08 16:41:06
○ 2026-03-29 12:11:00
○MXmail.katedra.info2016-07-08 → 2016-07-08 · 4 obs
● 2016-07-08 16:41:06
○ 2026-03-27 15:10:22
○ 2026-03-29 12:11:00
○A69.13.58.502015-07-01 → 2015-07-01 · 3 obs
○ 2015-11-06 21:46:16
○ 2026-03-29 12:11:00
○A77.55.254.1192016-07-08 → 2016-07-08 · 4 obs
● 2016-07-08 16:41:06
○ 2026-03-27 15:10:22
○ 2026-03-29 12:11:00
●A81.2.196.192026-03-27 → 2026-03-29 · 3 obs
● 2026-03-27 15:10:22
● 2026-03-29 12:11:00
○A85.128.134.2432016-02-24 → 2016-02-24 · 4 obs
● 2016-02-24 19:13:04
○ 2016-07-08 16:41:06
○ 2026-03-29 12:11:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| info | a2.info.afilias-nst.info, c0.info.afilias-nst.info, a0.info.afilias-nst.info | - |
| katedra.info | ns.forpsi.net, ns.forpsi.it, ns.forpsi.cz | - |
✅ Authoritative Response
Server:81.2.194.130
NS records: ns.forpsi.net, ns.forpsi.it, ns.forpsi.cz
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 920ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 81.2.196.19 |
| NS | 3 | ns.forpsi.cz, ns.forpsi.it... |
| SOA | 1 | ns.forpsi.net admin.forpsi.com |
Analysis
IP Addresses
katedra.info points to a single IP number: 81.2.196.19.
other host names for instance amivit.com, autobook.cz, mlazice.cz, upbeat.cz and bbsstyle.com share IP numbers with katedra.info.
Name Servers
katedra.info is delegated to three name servers: ns.forpsi.cz, ns.forpsi.it and ns.forpsi.net.
katedra.info at least partially shares name servers with other domains, for instance bgbit.hu, cens.cz, travelwithtoby.com, obste.cz and kieras.com.
These name servers are often used with ns.forpsi.us and ns.forpsi.cn.
Host names with two IP numbers:
Host ns.forpsi.cz points to 2001:15e8:201:1::d1b9 and 81.2.209.185.
Host ns.forpsi.it points to 2a00:6d41:2:1::5 and 95.110.254.165.
Host ns.forpsi.net points to 2001:15e8:101:1::c282 and 81.2.194.130.