masterdc.com - dns.ninja
masterdc.com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| A | 81.31.45.148🇨🇿 MASTER-AS81.31.32.0/20 MASTER-NET-1 | ||||||
| NS | ns1.master.cz ⭐ | ||||||
| A | 2a01:430:100:16::2🇨🇿 MASTER-AS2a01:430::/32 MASTER-IPV6-1-MAI-CZ | ||||||
| PTR | ns1.master.cz | ||||||
| A | 81.31.33.23🇨🇿 MASTER-AS81.31.32.0/20 MASTER-NET-1 | ||||||
| NS | ns2.master.cz | ||||||
| A | 2a01:430:200:b::2🇨🇿 MASTER-AS2a01:430::/32 MASTER-IPV6-1-MAI-CZ | ||||||
| PTR | ns2.master.cz | ||||||
| A | 81.31.33.6🇨🇿 MASTER-AS81.31.32.0/20 MASTER-NET-1 | ||||||
| NS | ns3.master.cz | ||||||
| A | 2a00:ca8:8000::c0de🇨🇿 PODA-AS2a00:ca8::/32 PODA a.s. | ||||||
| PTR | ns3.master.cz | ||||||
| A | 82.209.3.134🇨🇿 PODA-AS82.209.0.0/18 PODA-NET | ||||||
| MX | mail.master.cz ⭐ | ||||||
| A | 2a01:430:100:5c::2🇨🇿 MASTER-AS2a01:430::/32 MASTER-IPV6-1-MAI-CZ | ||||||
| PTR | mail.master.cz | ||||||
| A | 81.31.43.64🇨🇿 MASTER-AS81.31.32.0/20 MASTER-NET-1 | ||||||
| MX | ns3.master.cz(25) | ||||||
| A | 2a00:ca8:8000::c0de🇨🇿 PODA-AS2a00:ca8::/32 PODA a.s. | ||||||
| PTR | ns3.master.cz | ||||||
| A | 82.209.3.134🇨🇿 PODA-AS82.209.0.0/18 PODA-NET | ||||||
| TXT | brevo-code:f376c48802e5709dff3593087c019f90 | ||||||
| TXT | google-site-verification=mxTYmds-kn1BtPMYZi6umKoxxsz2GC0o5X6rd2Bp3tw | ||||||
| TXT | ahrefs-site-verification_883274841276f4db6957d3bf1dff5ccbf7aa74c716af02625ba5... | ||||||
| TXT | v=spf1 mx a:d24.westmaster.com a:d78.westmaster.com a:exch.active.master.cz a... | ||||||
| SOA | ns1.master.cznoc@master.cz 2026-06-03 #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=1782609105 | ||||||
rank #438021 in the tld
WOT: SAFE (69/100)
Subdomains
Same first word
masterdc.com |
masterdc.cz |
masterdc.sk |
masterdc.de |
masterdc.org |
masterdc.info |
masterdc.pl |
masterdc.ru |
masterdc.at |
masterdc.co.uk |
masterdc.eu |
Similar names
DNS History
8 records (6 active, 2 former)
○A81.31.33.202015-05-07 → 2015-05-07 · 3 obs
○ 2015-10-12 01:16:06
○ 2026-06-28 01:41:52
○A81.31.36.1212015-10-12 → 2021-06-03 · 5 obs
● 2015-10-12 01:16:06
● 2021-06-03 00:26:42
○ 2026-02-15 00:35:06
○ 2026-06-28 01:41:52
●A81.31.45.1482026-02-15 → 2026-06-28 · 3 obs
● 2026-02-15 00:35:06
● 2026-06-28 01:41:52
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | b.gtld-servers.net, c.gtld-servers.net, m.gtld-servers.net, i.gtld-servers.net... | - |
| masterdc.com | ns1.master.cz, ns2.master.cz, ns3.master.cz | - |
✅ Authoritative Response
Server:81.31.33.23
NS records: ns1.master.cz, ns2.master.cz, ns3.master.cz
🔒 DNSSEC Status
🔐 Secure (DNSSEC validated)
Chain of trust verified from root to domain
⏱️ Timing
Total: 1008ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 81.31.45.148 |
| NS | 3 | ns2.master.cz, ns1.master.cz... |
| MX | 2 | mail.master.cz (pri: 10), ns3.master.cz (pri: 25) |
| TXT | 4 | brevo-code:f376c48802e5709dff3593087c019, google-site-verification=mxTYmds-kn1BtPM... |
| SOA | 1 | ns1.master.cz noc.master.cz |
Analysis
Hierarchy
www.masterdc.com and cis.masterdc.com each fall under masterdc.com as their parent domain.
IP Addresses
masterdc.com resolves to just one IP address, 81.31.45.148.
www.master.cz, 81-31-45-148.static.masterinter.net, master.cz and www.masterdc.com are examples of host names that share IP numbers with masterdc.com.
Name Servers
masterdc.com carries NS records delegating to ns1.master.cz, ns2.master.cz and ns3.master.cz.
There is at least partial name server overlap between masterdc.com and other domains — f.6.1.0.0.3.4.0.1.0.a.2.ip6.arpa, 46.31.81.in-addr.arpa, 230.167.83.in-addr.arpa and two more among them.
The name servers ns1.westmaster.com, ns2.westmaster.com, ns1.cloud4data.com and two others are commonly seen in use alongside these name servers.
ns1.master.cz, ns2.master.cz and ns3.master.cz are three hostnames that each resolve to a pair of IP addresses: ns1.master.cz to 81.31.33.23 and 2a01:430:100:16::2, ns2.master.cz to 81.31.33.6 and 2a01:430:200:b::2, and ns3.master.cz to 82.209.3.134 and 2a00:ca8:8000::c0de.
Mail Servers
masterdc.com is served by two mail servers, mail.master.cz and ns3.master.cz.
Among the domains sharing a mail server setup with masterdc.com are masterapp.com, vosmera.com, master.cz and two others.
There is at least a partial MX overlap between masterdc.com and other domains, including motorove-cluny.cz, dafitmotoracing.com, nabidka-prace-online.cz and two others.
These mail servers are routinely seen in conjunction with the mail servers d723.masterinter.net and webhosting.masterinter.net.
Host names that have two IP addresses:
mail.master.cz resolves to two addresses: 81.31.43.64 and 2a01:430:100:5c::2.