congcu.org - robtex.com
congcu.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 45.252.251.17🇻🇳 AZDIGI-AS-VN45.252.248.0/22 AZDIGI-VN | ||||||
| NS | ns3.azdigi.com ⭐ | ||||||
| A | 45.252.248.5🇻🇳 AZDIGI-AS-VN45.252.248.0/22 AZDIGI-VN | ||||||
| NS | ns4.azdigi.com | ||||||
| A | 103.221.222.220🇻🇳 AZDIGI-AS-VN103.221.220.0/22 AZDIGI-VN | ||||||
| MX | congcu.org ⭐ | ||||||
| A | 45.252.251.17🇻🇳 AZDIGI-AS-VN45.252.248.0/22 AZDIGI-VN | ||||||
| SOA | ns3.azdigi.comhosting-admin@azdigi.com 2026-05-06 #1 | ||||||
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1778424709 | ||||||
MX for
congcu.org |
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●NSns3.azdigi.com2026-04-03 → 2026-05-10 · 2 obs
● 2026-05-10 14:57:04
●NSns4.azdigi.com2026-04-03 → 2026-05-10 · 2 obs
● 2026-05-10 14:57:04
●MXcongcu.org2026-04-03 → 2026-05-10 · 2 obs
● 2026-05-10 14:57:04
●A45.252.251.172026-04-03 → 2026-05-10 · 2 obs
● 2026-05-10 14:57:04
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, b2.org.afilias-nst.org, d0.org.afilias-nst.org | - |
| congcu.org | ns3.azdigi.com, ns4.azdigi.com | - |
✅ Authoritative Response
Server:103.221.222.220
NS records: ns3.azdigi.com, ns4.azdigi.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for congcu.org (unsigned zone)
⏱️ Timing
Total: 3858ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 45.252.251.17 |
| NS | 2 | ns4.azdigi.com, ns3.azdigi.com |
| MX | 1 | congcu.org (pri: 0) |
| SOA | 1 | ns3.azdigi.com hosting-admin.azdigi.com |
Analysis
Mail Server Role
congcu.org serves as a mail server for congcu.org.
IP Addresses
congcu.org points to a single IP: 45.252.251.17.
Other host names, for instance ath.edu.vn, webdisk.ath.edu.vn, mbenco.vn, cpcontacts.ath.edu.vn and bb.ccc.dddd.hostmaster.ath.edu.vn share IP numbers with congcu.org.
Name Servers
Two name servers ns3.azdigi.com and ns4.azdigi.com handle delegation for congcu.org.
congcu.org uses the same name server setup as other domains, for example liinsa.com, chithanh.edu.vn, thaiduongetm.vn, kenhvovgiaothong.com and lanhaacademy.vn.
congcu.org partially shares name servers with other domains; examples include toursun.vn, adotools.com, quantripro.com, teramind.com.vn and auviet-tech.com.
These name servers are often used with ns1.dotvndns.vn, nsbak.dotvndns.com, ns3.azdigihost.com, ns4.azdigihost.com, ns1.inet.vn, ns2.inet.vn, ns-master.inet.vn and ns3.zonedns.vn.
Host names with one IP number: The host name ns3.azdigi.com points to 45.252.248.5 and the host name ns4.azdigi.com points to 103.221.222.220.
Mail Servers
congcu.org is handled by a single mail server, congcu.org.
congcu.org points to a single IP: 45.252.251.17.