duupont.cn - robtex.com
duupont.cn
cn
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.dns.cn ⭐ | ||||||
| NS | b.dns.cn | ||||||
| NS | c.dns.cn | ||||||
| NS | d.dns.cn | ||||||
| NS | e.dns.cn | ||||||
| NS | ns.cernet.net ⚠️ Not in parent delegation | ||||||
| SOA | a.dns.cnroot@cnnic.cn serial=2035118626 | ||||||
Same first word
duupont.cn |
Similar names
DNS History
7 records (7 active, 0 former)
●NSpdns1.ultradns.net2026-06-17 → 2026-08-01 · 2 obs
● 2026-08-01 01:37:00
●NSpdns2.ultradns.net2026-06-17 → 2026-08-01 · 2 obs
● 2026-08-01 01:37:00
●NSpdns3.ultradns.org2026-06-17 → 2026-08-01 · 2 obs
● 2026-08-01 01:37:00
●NSpdns4.ultradns.org2026-06-17 → 2026-08-01 · 2 obs
● 2026-08-01 01:37:00
●NSpdns5.ultradns.info2026-06-17 → 2026-08-01 · 2 obs
● 2026-08-01 01:37:00
●NSpdns6.ultradns.co.uk2026-06-17 → 2026-08-01 · 2 obs
● 2026-08-01 01:37:00
●A204.74.99.1002026-06-17 → 2026-08-01 · 2 obs
● 2026-08-01 01:37:00
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| cn | a.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn... | - |
| duupont.cn | pdns1.ultradns.net, pdns2.ultradns.net, pdns3.ultradns.org, pdns4.ultradns.org... | - |
✅ Authoritative Response
Server:204.74.115.1
NS records: pdns1.ultradns.net, pdns2.ultradns.net, pdns3.ultradns.org, pdns4.ultradns.org, pdns5.ultradns.info, pdns6.ultradns.co.uk
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for duupont.cn (unsigned zone)
⏱️ Timing
Total: 1288ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 204.74.99.100 |
| NS | 6 | pdns1.ultradns.net, pdns2.ultradns.net... |
| SOA | 1 | pdns1.ultradns.net contact.usa.dupont.co |
Analysis
IP Addresses
duupont.cn directs to one IP number, which is 204.74.99.100.
Among the host names that share IP numbers with duupont.cn are joinmycwprx.com, kingsizedirect.co, northwestern-elevator.com and two others.
Name Servers
duupont.cn delegates authority to 6 name servers: pdns5.ultradns.info, pdns1.ultradns.net, pdns2.ultradns.net plus 3 other.
duupont.cn partially shares its NS delegation with several other domains, including banenvoorpsychologen.nl, universalnetworks.com.pa, expediaenvelopes.com and two others.
In DNS configurations, these name servers often share authority with pdns3.ultradns.org, pdns4.ultradns.org, pdns6.ultradns.co.uk and 3 other name servers.
Hosts with two IP numbers each:
pdns5.ultradns.info directs traffic to 204.74.114.1 and 2610:a1:1016::1.
pdns1.ultradns.net directs traffic to 204.74.108.1 and 2001:502:f3ff::1.
pdns2.ultradns.net directs traffic to 204.74.109.1 and 2610:a1:1014::1.
pdns3.ultradns.org directs traffic to 199.7.68.1 and 2610:a1:1015::1.
pdns4.ultradns.org directs traffic to 199.7.69.1 and 2001:502:4612::1.
pdns6.ultradns.co.uk directs traffic to 204.74.115.1 and 2610:a1:1017::1.