knowstudents.org - robtex.com
knowstudents.org
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1774830216 | ||||||
MX for
knowstudents.org |
Same first word
knowstudents.org |
DNS History
6 records (6 active, 0 former)
●NSdns.smarthost.pl2026-03-14 → 2026-03-30 · 2 obs
● 2026-03-30 00:47:50
●NSdns2.smarthost.pl2026-03-14 → 2026-03-30 · 2 obs
● 2026-03-30 00:47:50
●NSdns3.smarthost.pl2026-03-14 → 2026-03-30 · 2 obs
● 2026-03-30 00:47:50
●MXknowstudents.org2026-03-14 → 2026-03-30 · 2 obs
● 2026-03-30 00:47:50
●A2001:678:63c:0:9:5bd3:dc6e:12026-03-14 → 2026-03-30 · 2 obs
● 2026-03-30 00:47:50
●A91.211.221.1192026-03-14 → 2026-03-30 · 2 obs
● 2026-03-30 00:47:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| knowstudents.org | dns.smarthost.pl, dns2.smarthost.pl, dns3.smarthost.pl | - |
✅ Authoritative Response
Server:51.91.27.195
NS records: dns.smarthost.pl, dns2.smarthost.pl, dns3.smarthost.pl
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 752ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 91.211.221.119 |
| AAAA | 1 | 2001:678:63c:0:9:5bd3:dc6e:1 |
| NS | 3 | dns3.smarthost.pl, dns2.smarthost.pl... |
| MX | 1 | knowstudents.org (pri: 0) |
| TXT | 1 | v=spf1 ip4:91.211.220.110 ip4:91.211.221 |
| SOA | 1 | dns.smarthost.pl sysadmin.smarthost.pl |
Analysis
Mail Server Role
The mail server for knowstudents.org is knowstudents.org.
IP Addresses
knowstudents.org points to two IP numbers: 2001:678:63c:0:9:5bd3:dc6e:1 and 91.211.221.119.
Other host names such as arex-sruby.pl, richmann.pl, sportbober.com, wadowiceonline.pl and python.szkola.pl share IPs with knowstudents.org.
Name Servers
knowstudents.org is delegated to three name servers: dns2.smarthost.pl, dns3.smarthost.pl and dns.smarthost.pl.
knowstudents.org at least partially shares name servers with other domains, for example simpla.pl, martaurbaniak.com, blogi.zpazurem.pl, agrinatura.pl and slavo-mir.com.
Host names with two IP numbers:
dns2.smarthost.pl points to 2001:678:63c:0:9:c15d:580a:1 and 193.93.88.10
dns3.smarthost.pl points to 2001:41d0:203:58c3:0:335b:1bc3:1 and 51.91.27.195
dns.smarthost.pl points to 2001:678:63c:0:9:5bd3:dc0a:1 and 91.211.220.10
Mail Servers
One mail server handles knowstudents.org; that server is knowstudents.org.
knowstudents.org points to two IP numbers: 2001:678:63c:0:9:5bd3:dc6e:1 and 91.211.221.119.