study.nu - robtex.com
study.nu
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 94.231.103.100🇩🇰 team-blue-denmark94.231.96.0/20 ZITCOM A/S | ||||||
| PTR | dnsforward.simply.com | ||||||
| NS | ns1.simply.com ⭐ | ||||||
| A | 2a02:2339:1:15c::4562:4562🇩🇰 team-blue-denmark2a02:2339::/36 | ||||||
| PTR | ns1.simply.com | ||||||
| A | 91.197.248.78🇩🇰 team-blue-denmark91.197.248.0/22 | ||||||
| PTR | ns1.simply.com | ||||||
| NS | ns2.simply.com | ||||||
| A | 2a02:2339:4006:101::4562:4562🇩🇰 team-blue-denmark2a02:2339:4000::/34 | ||||||
| PTR | ns2.simply.com | ||||||
| A | 185.25.141.15🇩🇰 team-blue-denmark185.25.141.0/24 Zitcom A/S | ||||||
| PTR | ns2.simply.com | ||||||
| NS | ns3.simply.com | ||||||
| A | 91.197.248.79🇩🇰 team-blue-denmark91.197.248.0/22 | ||||||
| PTR | ns3.simply.com | ||||||
| SOA | ns1.simply.comhostmaster@simply.com 2026-07-02 #2 | ||||||
nu
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | catcher-in-the-rye.nic.nu ⭐ | ||||||
| NS | a.ns.nu | ||||||
| NS | c.ns.nu | ||||||
| NS | d.ns.nu | ||||||
| NS | m.ns.nu | ||||||
| NS | y.ns.nu | ||||||
| NS | z.ns.nu | ||||||
| TXT | id:7fd11d19-41ce-4759-aa42-54374dadb961 | ||||||
| TXT | NU zone update: 2026-08-13 18:21:37 +0000 (EPOCH 1786645297) (auto) | ||||||
| SOA | catcher-in-the-rye.nic.nuhostmaster@nic.nu serial=1786645348 | ||||||
Same first word
Similar names
DNS History
9 records (4 active, 5 former)
○NSns1.hyp.net2015-05-22 → 2026-02-16 · 4 obs
● 2026-02-16 22:31:40
○ 2026-08-09 16:08:00
○ 2026-08-13 18:37:28
●NSns1.simply.com2026-08-09 → 2026-08-13 · 3 obs
● 2026-08-09 16:08:00
● 2026-08-13 18:37:28
○NSns2.hyp.net2015-05-22 → 2026-02-16 · 4 obs
● 2026-02-16 22:31:40
○ 2026-08-09 16:08:00
○ 2026-08-13 18:37:28
●NSns2.simply.com2026-08-09 → 2026-08-13 · 3 obs
● 2026-08-09 16:08:00
● 2026-08-13 18:37:28
○NSns3.hyp.net2015-05-22 → 2026-02-16 · 4 obs
● 2026-02-16 22:31:40
○ 2026-08-09 16:08:00
○ 2026-08-13 18:37:28
●NSns3.simply.com2026-08-09 → 2026-08-13 · 3 obs
● 2026-08-09 16:08:00
● 2026-08-13 18:37:28
○A194.63.248.702016-03-30 → 2026-02-16 · 4 obs
● 2026-02-16 22:31:40
○ 2026-08-09 16:08:00
○ 2026-08-13 18:37:28
○A2a01:5b40:0:4070::12016-03-30 → 2026-02-16 · 4 obs
● 2026-02-16 22:31:40
○ 2026-08-09 16:08:00
○ 2026-08-13 18:37:28
●A94.231.103.1002026-08-09 → 2026-08-13 · 3 obs
● 2026-08-09 16:08:00
● 2026-08-13 18:37:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| nu | m.ns.nu, z.ns.nu, c.ns.nu, d.ns.nu... | 12 records |
| study.nu | ns1.simply.com, ns2.simply.com, ns3.simply.com | - |
✅ Authoritative Response
Server:91.197.248.79
NS records: ns1.simply.com, ns2.simply.com, ns3.simply.com
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 1267ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 94.231.103.100 |
| NS | 3 | ns1.simply.com, ns3.simply.com... |
| SOA | 1 | ns1.simply.com hostmaster.simply.com |
📌 Glue Records Collected
Total: 12
In-bailiwick: 12 (m.ns.nu, m.ns.nu, z.ns.nu...)
Analysis
IP Addresses
study.nu resolves to one IP address: 94.231.103.100.
ingredien.eu, gm-plast.dk, alu-comp.com and two other host names share IP numbers with study.nu.
Name Servers
Three name servers are authoritative for study.nu: ns1.simply.com, ns2.simply.com and ns3.simply.com.
At least some of study.nu's name servers are shared with other domains, for example clauseriksen.net, dansis.dk, breitholtz.org and two more.
These name servers tend to be used in conjunction with the name servers ns4.simply.com.
Hostnames that resolve to two IP addresses:
ns1.simply.com maps to two IP addresses — 91.197.248.78 and 2a02:2339:1:15c::4562:4562.
ns2.simply.com maps to two IP addresses — 185.25.141.15 and 2a02:2339:4006:101::4562:4562.
Hosts with just one IP address:
ns3.simply.com points to the IP address 91.197.248.79.