duo.pt - robtex.com
duo.pt
pt
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | curiosity.dns.pt ⭐ | ||||||
| NS | a.dns.pt | ||||||
| NS | b.dns.pt | ||||||
| NS | c.dns.pt | ||||||
| NS | d.dns.pt | ||||||
| NS | e.dns.pt | ||||||
| NS | g.dns.pt | ||||||
| NS | h.dns.pt | ||||||
| NS | ns.dns.br ⚠️ Not in parent delegation | ||||||
| NS | ns2.nic.fr ⚠️ Not in parent delegation | ||||||
| SOA | curiosity.dns.ptrequest@dns.pt 2026-04-15 #4 | ||||||
Same first word
Similar names
DNS History
9 records (7 active, 2 former)
●NSns1.dnspro.pt2026-03-16 → 2026-04-15 · 3 obs
● 2026-03-16 11:08:30
● 2026-04-15 02:03:50
○NSns1.esoterica.com2015-08-19 → 2017-01-13 · 4 obs
● 2017-01-13 06:23:26
○ 2026-03-16 11:08:30
○ 2026-04-15 02:03:50
●NSns2.dnspro.pt2026-03-16 → 2026-04-15 · 3 obs
● 2026-03-16 11:08:30
● 2026-04-15 02:03:50
○NSns2.esoterica.com2015-08-19 → 2017-01-13 · 4 obs
● 2017-01-13 06:23:26
○ 2026-03-16 11:08:30
○ 2026-04-15 02:03:50
●NSns3.dnspro.pt2026-03-16 → 2026-04-15 · 3 obs
● 2026-03-16 11:08:30
● 2026-04-15 02:03:50
●NSns4.dnspro.pt2026-03-16 → 2026-04-15 · 3 obs
● 2026-03-16 11:08:30
● 2026-04-15 02:03:50
●A213.205.79.732026-03-16 → 2026-04-15 · 2 obs
● 2026-04-15 02:03:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| pt | a.dns.pt, c.dns.pt, e.dns.pt, h.dns.pt... | - |
| duo.pt | ns1.dnspro.pt, ns3.dnspro.pt, ns2.dnspro.pt, ns4.dnspro.pt | 8 records |
✅ Authoritative Response
Server:185.136.99.168
NS records: ns1.dnspro.pt, ns3.dnspro.pt, ns2.dnspro.pt, ns4.dnspro.pt
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for duo.pt (unsigned zone)
⏱️ Timing
Total: 2411ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 213.205.79.73 |
| NS | 4 | ns4.dnspro.pt, ns3.dnspro.pt... |
| MX | 2 | smtpin2.smail.eu (pri: 20), smtpin1.smail.eu (pri: 10) |
| TXT | 2 | DUO-DOMAIN-VERIFICATION=psk:CnnzG4kGgjGg, v=spf1 ip4:195.22.21.13 ip4:195.170.168. |
| SOA | 1 | ns1.dnspro.pt support.sooma.com |
📌 Glue Records Collected
Total: 8
Out-of-bailiwick: 8 (ns4.dnspro.pt, ns3.dnspro.pt, ns2.dnspro.pt...)
Analysis
IP Addresses
duo.pt points to IP number 213.205.79.73.
For instance, other host names globalpark.pt, evergold.pt, oniduo.pt, clmediterraneo.com and oninet.pt share IP numbers with duo.pt.
Name Servers
duo.pt is delegated to four name servers: ns1.dnspro.pt, ns2.dnspro.pt, ns3.dnspro.pt and ns4.dnspro.pt.
duo.pt shares name servers with other domains at least partially, for example intevial.pt, fastio.pt, sonae.com, solinca.pt and iberomoldes.pt.
Host names with two IP numbers:
ns1.dnspro.pt points to: 2a06:fb00:1::1:168 and 185.136.96.168
ns2.dnspro.pt points to: 2a06:fb00:1::2:168 and 185.136.97.168
ns3.dnspro.pt points to: 2a06:fb00:1::3:168 and 185.136.98.168
ns4.dnspro.pt points to: 2a06:fb00:1::4:168 and 185.136.99.168
Mail Servers
Two mail servers smtpin1.smail.eu and smtpin2.smail.eu handle duo.pt.
duo.pt shares the same mail server setup as other domains, for instance inducol.com, jufil.com.pt, labina.com, nrd.pt and appacdm-trofa.org.
duo.pt shares mail servers with other domains at least partially; for instance novisnet.pt, imacustica.pt, outsteam.com, gpab.pt and tetraplano.com.
Host names with one IP number:
smtpin1.smail.eu points to: 195.170.168.49.
smtpin2.smail.eu points to: 195.170.168.53.