pde4research.com - robtex.com
pde4research.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.amgen.com ⚠️ Not in zone NS records | ||||||
| A | 138.133.52.91🇺🇸 AS14762138.133.52.0/24 Switch Communications Customer Route | ||||||
| PTR | ns1.amgen.com | ||||||
| NS | ns2.amgen.com ⚠️ Not in zone NS records | ||||||
| A | 138.133.61.100🇺🇸 AS14762138.133.61.0/24 | ||||||
| PTR | ns2.amgen.com | ||||||
| NS | ns3.amgen.com ⚠️ Not in zone NS records | ||||||
| A | 138.133.194.6🇺🇸 AS14762138.133.194.0/24 PNAP-AMS004 Amgen Route | ||||||
| PTR | ns3.amgen.com | ||||||
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=1782256050 | ||||||
Same first word
pde4research.net |
pde4research.org |
pde4research.com |
DNS History
8 records (3 active, 5 former)
○NSdns1.cscdns.net2015-05-28 → 2017-09-26 · 4 obs
● 2017-09-26 21:03:28
○ 2026-05-29 17:47:36
○ 2026-06-23 23:33:34
○NSdns2.cscdns.net2015-05-28 → 2017-09-26 · 4 obs
● 2017-09-26 21:03:28
○ 2026-05-29 17:47:36
○ 2026-06-23 23:33:34
●NSns1.amgen.com2026-05-29 → 2026-06-23 · 3 obs
● 2026-05-29 17:47:36
● 2026-06-23 23:33:34
●NSns2.amgen.com2026-05-29 → 2026-06-23 · 3 obs
● 2026-05-29 17:47:36
● 2026-06-23 23:33:34
●NSns3.amgen.com2026-05-29 → 2026-06-23 · 3 obs
● 2026-05-29 17:47:36
● 2026-06-23 23:33:34
○MXcustmx.cscdns.net2015-05-28 → 2017-09-26 · 4 obs
● 2017-09-26 21:03:28
○ 2026-05-29 17:47:36
○ 2026-06-23 23:33:34
○A165.160.13.202015-05-28 → 2017-09-26 · 4 obs
● 2017-09-26 21:03:28
○ 2026-05-29 17:47:36
○ 2026-06-23 23:33:34
○A165.160.15.202015-05-28 → 2017-09-26 · 4 obs
● 2017-09-26 21:03:28
○ 2026-05-29 17:47:36
○ 2026-06-23 23:33:34
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, i.gtld-servers.net, l.gtld-servers.net, m.gtld-servers.net... | - |
| pde4research.com | ns1.amgen.com, ns2.amgen.com, ns3.amgen.com | 3 records |
✅ Authoritative Response
Server:138.133.52.91
NS records: ns1.amgen.com, ns2.amgen.com, ns3.amgen.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for pde4research.com (unsigned zone)
⏱️ Timing
Total: 3577ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
📌 Glue Records Collected
Total: 3
Out-of-bailiwick: 3 (ns1.amgen.com, ns2.amgen.com, ns3.amgen.com)
Analysis
Name Servers
pde4research.com has three name servers — ns1.amgen.com, ns2.amgen.com and ns3.amgen.com.
pde4research.com has at least partial name server overlap with other domains, such as esa-apraise-program.com, datossobrepsoriasis.info, maintainyourwhitebloodcells.org and two others.
It is common to find these name servers paired with the name servers ns0-can.amgen.com.
Each of the three hostnames points to exactly one IP address: ns1.amgen.com points to 138.133.52.91, ns2.amgen.com points to 138.133.61.100 and ns3.amgen.com points to 138.133.194.6.