host4.ducadu.org - robtex.com
host4.ducadu.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 37.143.170.64🇷🇴 OPTICNET-DUCADU37.143.170.0/24 DUCADU-CLOUD | ||||||
| PTR | host4.ducadu.org | ||||||
| NS | ns1.ducadu.org ⭐ ⚠️ Not in parent delegation | ||||||
| A | 2a03:8f84::947d:baff:fe3a:3433🇷🇴 OPTICNET-DUCADU2a03:8f84::/32 -CLOUD | ||||||
| A | 37.143.167.30🇷🇴 OPTICNET-DUCADU37.143.167.0/24 DUCADU-CLOUD | ||||||
| PTR | ns1.ducadu.org | ||||||
| NS | ns2.ducadu.org ⚠️ Not in parent delegation | ||||||
| A | 2a03:8f84:0:2:4439:f4ff:fe9e:baf🇷🇴 OPTICNET-DUCADU2a03:8f84::/32 -CLOUD | ||||||
| PTR | ns2.ducadu.org | ||||||
| A | 37.143.164.195🇷🇴 OPTICNET-DUCADU37.143.164.0/24 DUCADU-CLOUD | ||||||
| PTR | ns2.ducadu.org | ||||||
| NS | ns3.ducadu.org ⚠️ Not in parent delegation | ||||||
| A | 2a03:8f80:1:8:84dc:9aff:fee8:d224🇷🇴 OPTICNET2a03:8f80::/32 SERV SRL | ||||||
| PTR | ns3.ducadu.org | ||||||
| A | 91.201.78.55🇷🇴 OPTICNET91.201.76.0/22 -NEW | ||||||
| PTR | ns3.ducadu.org | ||||||
| NS | ns4.ducadu.org ⚠️ Not in parent delegation | ||||||
| A | 86.107.57.66🇷🇴 TeenTelecom86.107.57.0/24 | ||||||
| MX | host4.ducadu.org ⭐ | ||||||
| A | 37.143.170.64🇷🇴 OPTICNET-DUCADU37.143.170.0/24 DUCADU-CLOUD | ||||||
| PTR | host4.ducadu.org | ||||||
| TXT | v=spf1 +mx +a +ip4:37.143.170.64 +include:_netblock.opticnet.ro ~all | ||||||
| SOA | ns1.ducadu.orgroot@host4.ducadu.org 2026-06-15 #0 | ||||||
ducadu.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 37.143.166.101🇷🇴 OPTICNET-DUCADU37.143.166.0/24 DUCADU-CLOUD | ||||||
| NS | ns1.ducadu.org ⭐ | ||||||
| NS | ns2.ducadu.org | ||||||
| NS | ns3.ducadu.org | ||||||
| NS | ns4.ducadu.org | ||||||
| MX | ducadu.org ⭐ | ||||||
| TXT | v=spf1 ip4:37.143.170.61 ip4:37.143.166.101 include:_netblock.opticnet.ro ip4... | ||||||
| SOA | ns1.ducadu.orgadmin@ducadu.com 2026-04-22 #0 | ||||||
PTR for
MX for
host4.ducadu.org |
Same first word
host4.org |
host4.net |
host4.com.br |
host4.top |
host4.de |
host4.com |
host4.net.br |
host4.biz |
host4.me |
host4.xyz |
host4.us |
host4.eu |
host4.ch |
host4.pl |
host4.pro |
host4.ru |
host4.be |
Similar names
DNS History
6 records (6 active, 0 former)
●NSns1.ducadu.org2026-02-17 → 2026-07-13 · 2 obs
● 2026-07-13 09:34:06
●NSns2.ducadu.org2026-02-17 → 2026-07-13 · 2 obs
● 2026-07-13 09:34:06
●NSns3.ducadu.org2026-02-17 → 2026-07-13 · 2 obs
● 2026-07-13 09:34:06
●NSns4.ducadu.org2026-02-17 → 2026-07-13 · 2 obs
● 2026-07-13 09:34:06
●MXhost4.ducadu.org2026-02-17 → 2026-07-13 · 2 obs
● 2026-07-13 09:34:06
●A37.143.170.642026-02-17 → 2026-07-13 · 2 obs
● 2026-07-13 09:34:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b2.org.afilias-nst.org, b0.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| ducadu.org | ns3.ducadu.org, ns2.ducadu.org, ns1.ducadu.org, ns4.ducadu.org | 4 records |
✅ Authoritative Response
Server:86.107.57.66
NS records: ns3.ducadu.org, ns2.ducadu.org, ns1.ducadu.org, ns4.ducadu.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for ducadu.org (unsigned zone)
⏱️ Timing
Total: 575ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 37.143.170.64 |
| NS | 4 | ns4.ducadu.org, ns3.ducadu.org... |
| MX | 1 | host4.ducadu.org (pri: 0) |
| TXT | 1 | v=spf1 +mx +a +ip4:37.143.170.64 +includ |
| SOA | 1 | ns1.ducadu.org root.host4.ducadu.org |
📌 Glue Records Collected
Total: 4
In-bailiwick: 4 (ns1.ducadu.org, ns2.ducadu.org, ns3.ducadu.org...)
Analysis
Mail Server Role
host4.ducadu.org handles its own mail, functioning as its own mail server.
IP Addresses
host4.ducadu.org resolves to just one IP address, 37.143.170.64.
Additional host names — including cristivasile.ro and sjup.ro — share IP numbers with host4.ducadu.org.
Name Servers
The NS records for host4.ducadu.org point to four name servers: ns1.ducadu.org, ns2.ducadu.org, ns3.ducadu.org and ns4.ducadu.org.
host4.ducadu.org has at least partial name server overlap with other domains, such as deprahova.ro, dianamihaila.ro, ottorose.ro and two others.
ns3.opticnet.org, ns4.opticnet.org and ns1.mancos.ro — plus 7 other name servers — are commonly paired with these name servers.
Host names that have two IP addresses:
ns1.ducadu.org has two IP addresses: 37.143.167.30 and 2a03:8f84::947d:baff:fe3a:3433.
ns2.ducadu.org has two IP addresses: 37.143.164.195 and 2a03:8f84:0:2:4439:f4ff:fe9e:baf.
ns3.ducadu.org has two IP addresses: 91.201.78.55 and 2a03:8f80:1:8:84dc:9aff:fee8:d224.
Host names that point to one IP address:
ns4.ducadu.org directs to 86.107.57.66.
Mail Servers
host4.ducadu.org is served by just one mail server: host4.ducadu.org.
host4.ducadu.org has exactly one IP number: 37.143.170.64.