duipont.com - robtex.com
duipont.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | pdns216.ultradns.biz ⚠️ Not in zone NS records | ||||||
| A | 2610:a1:1015::fc🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar | ||||||
| PTR | pdns216.ultradns.biz | ||||||
| A | 156.154.66.216🇺🇸 MAINT-ID-12008156.154.66.0/24 Neustar | ||||||
| PTR | pdns216.ultradns.biz | ||||||
| NS | pdns216.ultradns.com ⚠️ Not in zone NS records | ||||||
| A | 2001:502:f3ff::fc🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar | ||||||
| PTR | pdns216.ultradns.com | ||||||
| A | 156.154.64.216🇺🇸 MAINT-ID-12008156.154.64.0/24 Neustar | ||||||
| PTR | pdns216.ultradns.com | ||||||
| NS | pdns216.ultradns.net ⚠️ Not in zone NS records | ||||||
| A | 2610:a1:1014::fc🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar | ||||||
| PTR | pdns216.ultradns.net | ||||||
| A | 156.154.65.216🇺🇸 MAINT-ID-12008156.154.65.0/24 Neustar | ||||||
| PTR | pdns216.ultradns.net | ||||||
| NS | pdns216.ultradns.org ⚠️ Not in zone NS records | ||||||
| A | 2001:502:4612::fc🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar | ||||||
| PTR | pdns216.ultradns.org | ||||||
| A | 156.154.67.216🇺🇸 MAINT-ID-12008156.154.67.0/24 Neustar | ||||||
| PTR | pdns216.ultradns.org | ||||||
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=1784574247 | ||||||
Same first word
duipont.com |
Similar names
DNS History
10 records (4 active, 6 former)
○NSns1.natrohost.com2015-06-26 → 2015-12-28 · 4 obs
● 2015-12-28 14:45:48
○ 2026-06-17 18:31:20
○ 2026-07-20 19:08:28
○NSns2.natrohost.com2015-06-26 → 2015-12-28 · 4 obs
● 2015-12-28 14:45:48
○ 2026-06-17 18:31:20
○ 2026-07-20 19:08:28
●NSpdns216.ultradns.biz2026-06-17 → 2026-07-20 · 3 obs
● 2026-06-17 18:31:20
● 2026-07-20 19:08:28
●NSpdns216.ultradns.com2026-06-17 → 2026-07-20 · 3 obs
● 2026-06-17 18:31:20
● 2026-07-20 19:08:28
●NSpdns216.ultradns.net2026-06-17 → 2026-07-20 · 3 obs
● 2026-06-17 18:31:20
● 2026-07-20 19:08:28
●NSpdns216.ultradns.org2026-06-17 → 2026-07-20 · 3 obs
● 2026-06-17 18:31:20
● 2026-07-20 19:08:28
○MXmx1.duipont.com2015-06-26 → 2015-12-28 · 4 obs
● 2015-12-28 14:45:48
○ 2026-06-17 18:31:20
○ 2026-07-20 19:08:28
○MXmx2.duipont.com2015-06-26 → 2015-12-28 · 4 obs
● 2015-12-28 14:45:48
○ 2026-06-17 18:31:20
○ 2026-07-20 19:08:28
○A85.159.64.42015-06-26 → 2015-12-28 · 4 obs
● 2015-12-28 14:45:48
○ 2016-07-11 17:11:10
○ 2026-07-20 19:08:28
○A85.159.66.622016-07-11 → 2016-07-11 · 4 obs
● 2016-07-11 17:11:10
○ 2026-06-17 18:31:20
○ 2026-07-20 19:08:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| duipont.com | pdns216.ultradns.net, pdns216.ultradns.com, pdns216.ultradns.biz, pdns216.ultradns.org | 2 records |
✅ Authoritative Response
Server:156.154.64.216
NS records: pdns216.ultradns.net, pdns216.ultradns.com, pdns216.ultradns.biz, pdns216.ultradns.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for duipont.com (unsigned zone)
⏱️ Timing
Total: 287ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (pdns216.ultradns.com, pdns216.ultradns.com)
Analysis
Name Servers
Four name servers handle the delegation for duipont.com: pdns216.ultradns.biz, pdns216.ultradns.com, pdns216.ultradns.net and pdns216.ultradns.org.
At least some of duipont.com's name servers are shared with other domains, for example dupontdenemours.inc, dupont.xin, cirpreme.com and two more.
These name servers tend to co-occur with pdns5.ultradns.info, pdns1.ultradns.net, pdns2.ultradns.net and 3 other name servers in the same DNS delegations.
Four hostnames, each resolving to a pair of IP addresses: pdns216.ultradns.biz directs to 156.154.66.216 and 2610:a1:1015::fc; pdns216.ultradns.com directs to 156.154.64.216 and 2001:502:f3ff::fc; pdns216.ultradns.net directs to 156.154.65.216 and 2610:a1:1014::fc; pdns216.ultradns.org directs to 156.154.67.216 and 2001:502:4612::fc.