duoled.com - dns.ninja
duoled.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 164.138.209.15🇪🇸 CYBERNETICOS164.138.208.0/22 abuse@cyberneticos.com cyberneticos bgp c1 | ||||||
| PTR | comp13plus.cyberneticos.com | ||||||
| NS | ns13plusa.cyberneticos.com ⭐ | ||||||
| A | 164.138.209.15🇪🇸 CYBERNETICOS164.138.208.0/22 abuse@cyberneticos.com cyberneticos bgp c1 | ||||||
| PTR | comp13plus.cyberneticos.com | ||||||
| NS | ns13plusb.cyberneticos.com | ||||||
| A | 85.17.14.30🇳🇱 LEASEWEB-NL-AMS-0185.17.0.0/16 LEASEWEB | ||||||
| PTR | nameserver1.cyberneticos.com | ||||||
| MX | mail.duoled.com ⭐ | ||||||
| A | 164.138.209.15🇪🇸 CYBERNETICOS164.138.208.0/22 abuse@cyberneticos.com cyberneticos bgp c1 | ||||||
| PTR | comp13plus.cyberneticos.com | ||||||
| TXT | v=spf1 include:spf.ipzmarketing.com a mx ?all | ||||||
| TXT | google-site-verification=yu7zmUqnCIUM7h187DmxLERsYGwfVeiN4_0FIUj3uQk | ||||||
| SOA | ns13plusA.cyberneticos.comhostmaster@duoled.com 2026-03-04 #1 | ||||||
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=1783212541 | ||||||
Subdomains
mail.duoled.com |
Same first word
Similar names
deldou.de |
duodel.com |
edudol.com |
oldedu.com |
duodle.com |
duledo.com |
deloud.com |
lduode.com |
dedolu.com |
louded.com |
duledo.de |
oudled.com |
dudelo.com |
doudle.com |
ledodu.com |
DNS History
9 records (4 active, 5 former)
○NSdns7.cyberneticos.com2015-06-08 → 2016-11-25 · 4 obs
● 2016-11-25 16:39:38
○ 2017-10-13 09:29:12
○ 2026-07-05 01:02:52
○NSdns8.cyberneticos.com2015-06-08 → 2016-11-25 · 4 obs
● 2016-11-25 16:39:38
○ 2017-10-13 09:29:12
○ 2026-07-05 01:02:52
●NSns13plusa.cyberneticos.com2026-02-16 → 2026-07-05 · 3 obs
● 2026-02-16 00:15:00
● 2026-07-05 01:02:52
●NSns13plusb.cyberneticos.com2026-02-16 → 2026-07-05 · 3 obs
● 2026-02-16 00:15:00
● 2026-07-05 01:02:52
○NSns25a.cyberneticos.com2017-10-13 → 2017-10-13 · 4 obs
● 2017-10-13 09:29:12
○ 2026-02-16 00:15:00
○ 2026-07-05 01:02:52
○NSns25b.cyberneticos.com2017-10-13 → 2017-10-13 · 4 obs
● 2017-10-13 09:29:12
○ 2026-02-16 00:15:00
○ 2026-07-05 01:02:52
●MXmail.duoled.com2015-06-08 → 2026-07-05 · 2 obs
● 2026-07-05 01:02:52
●A164.138.209.152017-10-13 → 2026-07-05 · 3 obs
● 2017-10-13 09:29:12
● 2026-07-05 01:02:52
○A216.185.152.1592015-06-08 → 2016-11-25 · 4 obs
● 2016-11-25 16:39:38
○ 2017-10-13 09:29:12
○ 2026-07-05 01:02:52
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| duoled.com | ns13plusb.cyberneticos.com, ns13plusa.cyberneticos.com | 2 records |
✅ Authoritative Response
Server:164.138.209.15
NS records: ns13plusb.cyberneticos.com, ns13plusa.cyberneticos.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for duoled.com (unsigned zone)
⏱️ Timing
Total: 373ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 164.138.209.15 |
| NS | 2 | ns13plusA.cyberneticos.com, ns13plusB.cyberneticos.com |
| MX | 1 | mail.duoled.com (pri: 10) |
| TXT | 2 | v=spf1 include:spf.ipzmarketing.com a mx, google-site-verification=yu7zmUqnCIUM7h1 |
| SOA | 1 | ns13plusA.cyberneticos.com hostmaster.du |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns13plusb.cyberneticos.com, ns13plusa.cyberneticos.com)
Analysis
Hierarchy
mail.duoled.com is a subdomain of duoled.com.
IP Addresses
duoled.com directs to one IP number, which is 164.138.209.15.
Among the host names that share IP numbers with duoled.com are escarval.info, embschool.es, mail.aliciacowphotography.com and two others.
Name Servers
The NS records for duoled.com delegate to ns13plusa.cyberneticos.com and ns13plusb.cyberneticos.com.
duoled.com has the same name server delegation as a number of other domains, such as cdcadizcostadelaluz.com, fundacionvipren.com, garindecoracion.com and two more.
duoled.com has overlapping name servers with several other domains — among them ribaforada.eu, mendivil.eu, desguacesquini.com and comp13plus.cyberneticos.com.
These name servers commonly co-occur with the name servers ns25a.cyberneticos.com, ns25b.cyberneticos.com, dns1.cyberneticos.com and dns2.cyberneticos.com.
Both ns13plusa.cyberneticos.com and ns13plusb.cyberneticos.com have a single IP address each — ns13plusa.cyberneticos.com resolves to 164.138.209.15 while ns13plusb.cyberneticos.com resolves to 85.17.14.30.
Mail Servers
duoled.com routes its mail through a single mail server, mail.duoled.com.
mail.duoled.com resolves to 164.138.209.15 and no other IP number.