sci4u.info - robtex.com
sci4u.info
| DNSSEC | ⚠️ Not signed | ||||||
| A | 217.31.49.20🇨🇿 IGNUM-AS217.31.48.0/20 Network of Ignum s.r.o. Czech Republic http://www.ignum.cz/ | ||||||
| PTR | redir-proxy.core.ignum.cz | ||||||
| NS | ns1.ignum.com ⭐ | ||||||
| A | 2a00:1e40:a:53::5🇸🇰 IGNUM-AS2a00:1e40:a::/48 | ||||||
| PTR | ns1-bra.core.webglobe.com | ||||||
| A | 185.65.223.35🇸🇰 IGNUM-AS185.65.223.0/24 | ||||||
| PTR | ns1-bra.core.webglobe.com | ||||||
| NS | ns2.ignum.cz | ||||||
| A | 2001:1ab0:7e1e:2::5🇨🇿 IGNUM-AS2001:1ab0::/32 Network of Ignum s.r.o. Czech Republic http://www.ignum.cz/ | ||||||
| PTR | ns2-prg.core.webglobe.com | ||||||
| A | 217.31.48.201🇨🇿 IGNUM-AS217.31.48.0/20 Network of Ignum s.r.o. Czech Republic http://www.ignum.cz/ | ||||||
| PTR | ns2-prg.core.webglobe.com | ||||||
| MX | mail3.ignum.cz ⭐ | ||||||
| A | 62.109.151.89🇨🇿 IGNUM-AS62.109.128.0/19 Network of Ignum s.r.o. Czech Republic http://www.ignum.cz/ | ||||||
| MX | mail2.ignum.cz(20) | ||||||
| A | 62.109.128.119🇨🇿 IGNUM-AS62.109.128.0/19 Network of Ignum s.r.o. Czech Republic http://www.ignum.cz/ | ||||||
| PTR | mx-lb.core.webglobe.com | ||||||
| SOA | ns1.ignum.comhostmaster@ignum.cz 2020-12-05 #1 | ||||||
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=1774399729 | ||||||
Same first word
Similar names
DNS History
5 records (5 active, 0 former)
●A217.31.49.202015-05-06 → 2026-03-25 · 2 obs
● 2026-03-25 01:18:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| info | a0.info.afilias-nst.info, a2.info.afilias-nst.info, c0.info.afilias-nst.info | - |
| sci4u.info | ns1.ignum.com, ns2.ignum.cz | - |
✅ Authoritative Response
Server:217.31.48.201
NS records: ns1.ignum.com, ns2.ignum.cz
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for sci4u.info (unsigned zone)
⏱️ Timing
Total: 1004ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 217.31.49.20 |
| NS | 2 | ns1.ignum.com, ns2.ignum.cz |
| MX | 2 | mail3.ignum.cz (pri: 10), mail2.ignum.cz (pri: 20) |
| SOA | 1 | ns1.ignum.com hostmaster.ignum.cz |
Analysis
IP Addresses
sci4u.info resolves to one IP number: 217.31.49.20.
other host names including medlanky.eu, tecnocasa.cz, imap.zoodk.cz, lululemon.cz and aneco.cz share IP numbers with sci4u.info.
Name Servers
sci4u.info is delegated to two name servers ns1.ignum.com and ns2.ignum.cz.
sci4u.info shares the same name server setup as other domains, for instance ibelami.eu, autoplachty.com, tachtech.cz, control4.sk and brany.cz.
sci4u.info at least partially shares name servers with other domains, for instance vtkpi.com, vapas.com, exekuce-majetku.cz, sev.cz and servis4all.com.
Host names with two IP numbers:
The host name ns1.ignum.com points to 2a00:1e40:a:53::5 and 185.65.223.35; the host name ns2.ignum.cz points to 2001:1ab0:7e1e:2::5 and 217.31.48.201.
Mail Servers
Two mail servers handle sci4u.info: mail2.ignum.cz and mail3.ignum.cz.
sci4u.info shares the same mail server setup as other domains, for instance sci4u.us, busbazar.cz, regionservis.com, reportaze.cz and regionservis.org.
sci4u.info shares some mail servers with other domains, at least partially, for instance waremax.eu, doucovani.info, mandala.eu, hovado.eu and sleepwell.cz.
these mail servers are often used together with mail servers mail12.ignum.cz, mail11.ignum.cz, mail5.ignum.cz, mail8.ignum.cz and mail6.ignum.cz.
Host names with one IP number:
mail2.ignum.cz points to 62.109.128.119
mail3.ignum.cz points to 62.109.151.89