otutorial.com - robtex.com
otutorial.com
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1788205625 | ||||||
Same first word
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DNS History
6 records (6 active, 0 former)
●NSns1.nbcuni.com2026-04-09 → 2026-08-31 · 2 obs
● 2026-08-31 19:50:40
●NSns2.nbcuni.com2026-04-09 → 2026-08-31 · 2 obs
● 2026-08-31 19:50:40
●NSns3.nbcuni.com2026-04-09 → 2026-08-31 · 2 obs
● 2026-08-31 19:50:40
●NSns4.nbcuni.com2026-04-09 → 2026-08-31 · 2 obs
● 2026-08-31 19:50:40
●NSns5.nbcuni.com2026-04-09 → 2026-08-31 · 2 obs
● 2026-08-31 19:50:40
●NSns6.nbcuni.com2026-04-09 → 2026-08-31 · 2 obs
● 2026-08-31 19:50:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| otutorial.com | ns1.nbcuni.com, ns2.nbcuni.com, ns3.nbcuni.com, ns4.nbcuni.com... | 6 records |
✅ Authoritative Response
Server:156.154.68.31
NS records: ns1.nbcuni.com, ns2.nbcuni.com, ns3.nbcuni.com, ns4.nbcuni.com, ns5.nbcuni.com, ns6.nbcuni.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for otutorial.com (unsigned zone)
⏱️ Timing
Total: 237ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 6 | ns1.nbcuni.com, ns2.nbcuni.com... |
| TXT | 1 | v=spf1 include:%{ir}.%{v}.%{d}.spf.has.p |
| SOA | 1 | ns1.nbcuni.com domain\.admin.nbcuni.com |
📌 Glue Records Collected
Total: 6
Out-of-bailiwick: 6 (ns1.nbcuni.com, ns2.nbcuni.com, ns3.nbcuni.com...)
Analysis
Name Servers
otutorial.com is served by 6 authoritative name servers — among them ns1.nbcuni.com, ns2.nbcuni.com, ns3.nbcuni.com and 3 others.
otutorial.com shares at least some of its name servers with other domains, including columbuslocalsonly.com, gifocus.info, nbcuniversaltips.com and two others.
These name servers are frequently paired with the name servers ns4.nbcuni.com, ns5.nbcuni.com and ns6.nbcuni.com.
Hosts with two IP numbers each:
ns1.nbcuni.com resolves to two addresses: 156.154.64.31 and 2001:502:f3ff::31.
ns2.nbcuni.com resolves to two addresses: 156.154.65.31 and 2610:a1:1014::31.
ns3.nbcuni.com resolves to two addresses: 156.154.66.31 and 2610:a1:1015::31.
ns4.nbcuni.com resolves to two addresses: 156.154.67.31 and 2001:502:4612::31.
ns5.nbcuni.com resolves to two addresses: 156.154.68.31 and 2610:a1:1016::31.
ns6.nbcuni.com resolves to two addresses: 156.154.69.31 and 2610:a1:1017::31.