duo.io - robtex.com
duo.io
io
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.nic.io ⭐ | ||||||
| NS | a2.nic.io | ||||||
| NS | b0.nic.io | ||||||
| NS | c0.nic.io | ||||||
| SOA | a0.nic.iohostmaster@donuts.email serial=1776204655 | ||||||
Same first word
Similar names
DNS History
5 records (2 active, 3 former)
●NSdns1.cscdns.net2019-01-15 → 2026-04-14 · 2 obs
● 2026-04-14 22:44:20
●NSdns2.cscdns.net2019-01-15 → 2026-04-14 · 2 obs
● 2026-04-14 22:44:20
○MXcustmx.cscdns.net2019-01-15 → 2019-01-15 · 3 obs
○ 2026-03-31 13:58:04
○ 2026-04-14 22:44:20
○A165.160.13.202019-01-15 → 2019-01-15 · 3 obs
○ 2026-03-31 13:58:04
○ 2026-04-14 22:44:20
○A165.160.15.202019-01-15 → 2019-01-15 · 3 obs
○ 2026-03-31 13:58:04
○ 2026-04-14 22:44:20
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| io | c0.nic.io, a2.nic.io, a0.nic.io, b0.nic.io | - |
| duo.io | dns1.cscdns.net, dns2.cscdns.net | - |
✅ Authoritative Response
Server:156.154.131.100
NS records: dns1.cscdns.net, dns2.cscdns.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for duo.io (unsigned zone)
⏱️ Timing
Total: 416ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
Analysis
Name Servers
duo.io is delegated to two name servers dns1.cscdns.net and dns2.cscdns.net.
duo.io shares the same name server setup as other domains, for instance holcim.group, roundupweathermax.com, camembert.com.au, bazz.space and bmwgroup.ac.
duo.io at least partially shares name servers with other domains, for instance mapic.moscow, countrywidecreditguard.com, saxobank.com.ng and countrywidealliancejv.com.
Host names with two IP numbers:
The host name dns1.cscdns.net points to 2610:a1:1022::100 and 156.154.130.100; the host name dns2.cscdns.net points to 2610:a1:1023::100 and 156.154.131.100.