isoclast.com - robtex.com
isoclast.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | pdns216.ultradns.com ⭐ | ||||||
| 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.biz | ||||||
| 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.net | ||||||
| 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 | ||||||
| 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 | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | pdns216.ultradns.comhostmaster@corteva.com 2018-06-28 #29 | ||||||
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=1783260736 | ||||||
Same first word
Similar names
DNS History
8 records (4 active, 4 former)
○NSmantdnsi1.dow.com2016-09-25 → 2017-04-20 · 4 obs
● 2017-04-20 04:25:58
○ 2026-06-17 18:30:30
○ 2026-07-05 14:12:46
●NSpdns216.ultradns.biz2026-06-17 → 2026-07-05 · 3 obs
● 2026-06-17 18:30:30
● 2026-07-05 14:12:46
●NSpdns216.ultradns.com2026-06-17 → 2026-07-05 · 3 obs
● 2026-06-17 18:30:30
● 2026-07-05 14:12:46
●NSpdns216.ultradns.net2026-06-17 → 2026-07-05 · 3 obs
● 2026-06-17 18:30:30
● 2026-07-05 14:12:46
●NSpdns216.ultradns.org2026-06-17 → 2026-07-05 · 3 obs
● 2026-06-17 18:30:30
● 2026-07-05 14:12:46
○NStnntdnsi1.dow.com2016-09-25 → 2017-04-20 · 4 obs
● 2017-04-20 04:25:58
○ 2026-06-17 18:30:30
○ 2026-07-05 14:12:46
○NStxntdnsi1.dow.com2016-09-25 → 2017-04-20 · 4 obs
● 2017-04-20 04:25:58
○ 2026-06-17 18:30:30
○ 2026-07-05 14:12:46
○A216.99.82.842016-09-25 → 2017-04-20 · 4 obs
● 2017-04-20 04:25:58
○ 2026-06-17 18:30:30
○ 2026-07-05 14:12:46
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| isoclast.com | pdns216.ultradns.net, pdns216.ultradns.com, pdns216.ultradns.biz, pdns216.ultradns.org | 2 records |
✅ Authoritative Response
Server:156.154.65.216
NS records: pdns216.ultradns.net, pdns216.ultradns.com, pdns216.ultradns.biz, pdns216.ultradns.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for isoclast.com (unsigned zone)
⏱️ Timing
Total: 386ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | pdns216.ultradns.biz, pdns216.ultradns.com... |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | pdns216.ultradns.com hostmaster.corteva. |
📌 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 isoclast.com: pdns216.ultradns.biz, pdns216.ultradns.com, pdns216.ultradns.net and pdns216.ultradns.org.
There is at least partial name server overlap between isoclast.com and other domains — chlorpyrifosinfo.com, lithouniversity.com, molycote.com and two more among them.
These name servers regularly appear alongside pdns5.ultradns.info, pdns1.ultradns.net, pdns2.ultradns.net and 3 other name servers in NS record sets.
All four hostnames — pdns216.ultradns.biz, pdns216.ultradns.com, pdns216.ultradns.net and pdns216.ultradns.org — resolve to two IP numbers apiece: pdns216.ultradns.biz to 156.154.66.216 and 2610:a1:1015::fc; pdns216.ultradns.com to 156.154.64.216 and 2001:502:f3ff::fc; pdns216.ultradns.net to 156.154.65.216 and 2610:a1:1014::fc; pdns216.ultradns.org to 156.154.67.216 and 2001:502:4612::fc.