classmaster.eu - dns.ninja
classmaster.eu
| DNSSEC | ⚠️ Not signed | ||||||
| A | 91.208.99.12 | ||||||
| NS | secure.abzone.cz ⭐ | ||||||
| A | 95.80.214.201🇨🇿 QUANTCOM-AS95.80.192.0/18 Dial Telecom, a.s. | ||||||
| PTR | secure.abzone.cz | ||||||
| NS | ns.abzone.cz | ||||||
| A | 85.118.129.20🇨🇿 MASTER-AS85.118.128.0/21 CZ-MASTER-20120312 | ||||||
| PTR | ns.abzone.cz | ||||||
| MX | aspmx.l.google.com ⭐ | ||||||
| A | 2607:f8b0:4004:c1f::1b🇺🇸 Google2607:f8b0:4004::/48 | ||||||
| PTR | pd-in-f27.1e100.net | ||||||
| A | 142.251.111.27🇺🇸 Google142.251.111.0/24 | ||||||
| PTR | bk-in-f27.1e100.net | ||||||
| MX | alt1.aspmx.l.google.com(50) | ||||||
| A | 2800:3f0:4003:c0f::1b🇨🇱 Google2800:3f0:4003::/48 | ||||||
| A | 108.177.123.27🇺🇸 Google108.177.123.0/24 | ||||||
| PTR | lcscld-in-f27.1e100.net | ||||||
| MX | alt2.aspmx.l.google.com(50) | ||||||
| A | 2a00:1450:400b:c01::1b🇮🇪 Google2a00:1450:400b::/48 | ||||||
| PTR | di-in-f27.1e100.net | ||||||
| A | 74.125.193.26🇺🇸 Google74.125.193.0/24 | ||||||
| PTR | di-in-f26.1e100.net | ||||||
| PTR | ig-in-f26.1e100.net | ||||||
| MX | aspmx2.googlemail.com(100) | ||||||
| A | 2800:3f0:4003:c0f::1b🇨🇱 Google2800:3f0:4003::/48 | ||||||
| A | 108.177.123.27🇺🇸 Google108.177.123.0/24 | ||||||
| PTR | lcscld-in-f27.1e100.net | ||||||
| TXT | v=spf1 include:mailgun.org include:secureserver.net ~all | ||||||
| SOA | secure.abzone.czroot@secure.abzone.cz 2020-03-04 #15 | ||||||
eu
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | si.dns.eu ⭐ | ||||||
| NS | be.dns.eu | ||||||
| NS | w.dns.eu | ||||||
| NS | x.dns.eu | ||||||
| NS | y.dns.eu | ||||||
| SOA | si.dns.eutech@eurid.eu serial=1126615198 | ||||||
Subdomains
www.classmaster.eu |
Same first word
classmaster.eu |
classmaster.com |
classmaster.cz |
classmaster.in |
classmaster.ru |
classmaster.co.uk |
classmaster.ca |
Similar names
DNS History
7 records (7 active, 0 former)
●MXalt1.aspmx.l.google.com2015-08-03 → 2026-07-31 · 2 obs
● 2026-07-31 07:10:26
●MXalt2.aspmx.l.google.com2015-08-03 → 2026-07-31 · 2 obs
● 2026-07-31 07:10:26
●MXaspmx.l.google.com2015-08-03 → 2026-07-31 · 2 obs
● 2026-07-31 07:10:26
●MXaspmx2.googlemail.com2015-08-03 → 2026-07-31 · 2 obs
● 2026-07-31 07:10:26
●A91.208.99.122015-08-03 → 2026-07-31 · 2 obs
● 2026-07-31 07:10:26
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| eu | be.dns.eu, x.dns.eu, y.dns.eu, w.dns.eu... | - |
| classmaster.eu | ns.abzone.cz, secure.abzone.cz | - |
✅ Authoritative Response
Server:85.118.129.20
NS records: ns.abzone.cz, secure.abzone.cz
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for classmaster.eu (unsigned zone)
⏱️ Timing
Total: 1975ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 91.208.99.12 |
| NS | 2 | secure.abzone.cz, ns.abzone.cz |
| MX | 4 | alt1.aspmx.l.google.com (pri: 50), aspmx.l.google.com (pri: 10)... |
| TXT | 1 | v=spf1 include:mailgun.org include:secur |
| SOA | 1 | secure.abzone.cz root.secure.abzone.cz |
Analysis
Hierarchy
www.classmaster.eu is a subdomain of classmaster.eu.
IP Addresses
classmaster.eu points to a single IP number: 91.208.99.12.
Additional host names — ems-maintenance.co.uk, leadspring.co.uk, antimonyworld.com and two others — share IP numbers with classmaster.eu.
Name Servers
classmaster.eu uses two name servers for its delegation: ns.abzone.cz and secure.abzone.cz.
classmaster.eu shares its name server setup with other domains, including bobrovsky.eu, elsanex.cz, wavinekoplastik.com and two others.
Both ns.abzone.cz and secure.abzone.cz have a single IP address each — ns.abzone.cz resolves to 85.118.129.20 while secure.abzone.cz resolves to 95.80.214.201.
Mail Servers
Mail for classmaster.eu is handled by four mail servers: aspmx2.googlemail.com, aspmx.l.google.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com.
classmaster.eu shares mail servers — at least in part — with other domains, including rpp.org.np, 7yphon.com, happypandacorp.com and two others.
These mail servers are frequently used alongside the mail servers alt3.aspmx.l.google.com, alt4.aspmx.l.google.com and aspmx3.googlemail.com, plus two others.
The four host names aspmx2.googlemail.com, aspmx.l.google.com, alt1.aspmx.l.google.com and alt2.aspmx.l.google.com each resolve to two IP addresses. aspmx2.googlemail.com resolves to 108.177.123.27 and 2800:3f0:4003:c0f::1b. aspmx.l.google.com resolves to 142.251.111.27 and 2607:f8b0:4004:c1f::1b. alt1.aspmx.l.google.com resolves to 108.177.123.27 and 2800:3f0:4003:c0f::1b. alt2.aspmx.l.google.com resolves to 74.125.193.26 and 2a00:1450:400b:c01::1b. Note that aspmx2.googlemail.com and alt1.aspmx.l.google.com share the same pair of IP addresses.
Both aspmx2.googlemail.com and alt1.aspmx.l.google.com resolve to 2800:3f0:4003:c0f::1b IP addresses each.
Both aspmx2.googlemail.com and alt1.aspmx.l.google.com resolve to 108.177.123.27 IP addresses each.