math-experts.com - robtex.com
math-experts.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns1.reedelsevier.com ⭐ | ||||||
| A | 138.12.4.5🇺🇸 AS32472138.12.0.0/17 | ||||||
| PTR | ns1.reedelsevier.com | ||||||
| NS | ns2.reedelsevier.com | ||||||
| A | 198.176.82.98🇬🇧 REED-ELSEVIER-EMEA-GCC198.176.82.0/24 | ||||||
| NS | ns3.reedelsevier.com | ||||||
| A | 198.176.82.101🇬🇧 REED-ELSEVIER-EMEA-GCC198.176.82.0/24 | ||||||
| PTR | ns3.reedelsevier.com | ||||||
| SOA | ns1.reedelsevier.comhostmaster@lexisnexis.com serial=22 | ||||||
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=1776113752 | ||||||
Same first word
math-experts.com |
DNS History
4 records (3 active, 1 former)
●NSns1.reedelsevier.com2017-02-16 → 2026-04-13 · 2 obs
● 2026-04-13 21:15:52
●NSns2.reedelsevier.com2017-02-16 → 2026-04-13 · 2 obs
● 2026-04-13 21:15:52
●NSns3.reedelsevier.com2017-02-16 → 2026-04-13 · 2 obs
● 2026-04-13 21:15:52
○A217.19.248.1322017-02-16 → 2019-12-31 · 4 obs
● 2019-12-31 22:27:38
○ 2026-04-08 23:07:52
○ 2026-04-13 21:15:52
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | j.gtld-servers.net, a.gtld-servers.net, l.gtld-servers.net, c.gtld-servers.net... | - |
| math-experts.com | ns1.reedelsevier.com, ns2.reedelsevier.com, ns3.reedelsevier.com | 3 records |
✅ Authoritative Response
Server:138.12.4.5
NS records: ns1.reedelsevier.com, ns2.reedelsevier.com, ns3.reedelsevier.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for math-experts.com (unsigned zone)
⏱️ Timing
Total: 3153ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 3 | ns2.reedelsevier.com, ns3.reedelsevier.com... |
| SOA | 1 | ns1.reedelsevier.com hostmaster.lexisnex |
📌 Glue Records Collected
Total: 3
Out-of-bailiwick: 3 (ns1.reedelsevier.com, ns2.reedelsevier.com, ns3.reedelsevier.com)
Analysis
Name Servers
math-experts.com is delegated to three name servers ns1.reedelsevier.com, ns2.reedelsevier.com and ns3.reedelsevier.com.
math-experts.com at least partially shares name servers with other domains, for instance cpmcarepoints.com, lexisgroup.com, lexi(0x736578)plore.fr, vatbriefings.com and interaction.uk.
Host names with one IP number: ns1.reedelsevier.com points to 138.12.4.5; ns2.reedelsevier.com points to 198.176.82.98; ns3.reedelsevier.com points to 198.176.82.101.