mastercourse.net - robtex.com
mastercourse.net
net
| 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=1771291465 | ||||||
Same first word
mastercourse.guru |
mastercourse.nl |
mastercourse.net |
mastercourse.com |
Similar names
DNS History
18 records (8 active, 10 former)
●NSdns1.registrar-servers.com2026-02-21 → 2026-02-21 · 2 obs
● 2026-02-21 17:05:02
●NSdns2.registrar-servers.com2026-02-21 → 2026-02-21 · 2 obs
● 2026-02-21 17:05:02
○NSns1.activeaudience.com2007-10-15 → 2007-10-15 · 3 obs
○ 2015-06-08 12:47:36
○ 2026-02-21 17:05:02
○NSns2.activeaudience.com2007-10-15 → 2007-10-15 · 3 obs
○ 2015-06-08 12:47:36
○ 2026-02-21 17:05:02
○NSns37.domaincontrol.com2015-06-08 → 2020-02-21 · 4 obs
● 2015-06-08 12:47:36
● 2020-02-21 18:24:44
○ 2026-02-21 17:05:02
○NSns38.domaincontrol.com2015-06-08 → 2020-02-21 · 4 obs
● 2015-06-08 12:47:36
● 2020-02-21 18:24:44
○ 2026-02-21 17:05:02
○MXdev.null2007-10-15 → 2007-10-15 · 3 obs
○ 2015-06-08 12:47:36
○ 2026-02-21 17:05:02
●MXeforward1.registrar-servers.com2026-02-21 → 2026-02-21 · 2 obs
● 2026-02-21 17:05:02
●MXeforward2.registrar-servers.com2026-02-21 → 2026-02-21 · 2 obs
● 2026-02-21 17:05:02
●MXeforward3.registrar-servers.com2026-02-21 → 2026-02-21 · 2 obs
● 2026-02-21 17:05:02
●MXeforward4.registrar-servers.com2026-02-21 → 2026-02-21 · 2 obs
● 2026-02-21 17:05:02
●MXeforward5.registrar-servers.com2026-02-21 → 2026-02-21 · 2 obs
● 2026-02-21 17:05:02
○MXmailstore1.secureserver.net2015-06-08 → 2020-02-21 · 4 obs
● 2015-06-08 12:47:36
● 2020-02-21 18:24:44
○ 2026-02-21 17:05:02
○MXsmtp.secureserver.net2015-06-08 → 2020-02-21 · 4 obs
● 2015-06-08 12:47:36
● 2020-02-21 18:24:44
○ 2026-02-21 17:05:02
●A192.64.119.2522026-02-21 → 2026-02-21 · 2 obs
● 2026-02-21 17:05:02
○A208.254.26.1322007-10-15 → 2007-10-15 · 3 obs
○ 2015-06-08 12:47:36
○ 2026-02-21 17:05:02
○A220.133.223.2062020-01-28 → 2020-02-21 · 4 obs
● 2020-01-28 14:11:06
● 2020-02-21 18:24:44
○ 2026-02-21 17:05:02
○A60.251.143.1332015-06-08 → 2017-04-08 · 5 obs
● 2015-06-08 12:47:36
● 2017-04-08 22:49:48
○ 2020-01-28 14:11:06
○ 2026-02-21 17:05:02
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | m.gtld-servers.net, k.gtld-servers.net, b.gtld-servers.net, f.gtld-servers.net... | - |
| mastercourse.net | dns1.registrar-servers.com, dns2.registrar-servers.com | - |
✅ Authoritative Response
Server: 156.154.132.200
NS records: dns1.registrar-servers.com, dns2.registrar-servers.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for mastercourse.net (unsigned zone)
⏱️ Timing
Total: 420ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 192.64.119.252 |
| NS | 2 | dns1.registrar-servers.com, dns2.registrar-servers.com |
| MX | 5 | eforward1.registrar-servers.com (pri: 10, eforward2.registrar-servers.com (pri: 10... |
| TXT | 1 | v=spf1 include:spf.efwd.registrar-server |
| SOA | 1 | dns1.registrar-servers.com hostmaster.re |
AI analysis
mastercourse.net points to a single IP number: 192.64.119.252.
Other host names, for instance agradedrivingschool.com.au, granite.tel, navxt.com, adultdating.us.com and hengkee.com share IP numbers with mastercourse.net.
Delegation for mastercourse.net rests with two name servers, dns1.registrar-servers.com and dns2.registrar-servers.com.
mastercourse.net shares the same name server setup as other domains, including richandmonica.com, subcrater.com, polenord.info, divincentis.com and icasesmall.com.
mastercourse.net at least partially shares name servers with other domains, for instance casinomonero.com, kidsstartups.com, spispi.org, inca-row.com and rodmantech.net.
these name servers are commonly used with dns3.registrar-servers.com, dns4.registrar-servers.com and dns5.registrar-servers.com.
Host names with two IP numbers: dns1.registrar-servers.com points to 2610:a1:1024::200 and 156.154.132.200; dns2.registrar-servers.com points to 2610:a1:1025::200 and 156.154.133.200.
mastercourse.net is handled by five mail servers: eforward1.registrar-servers.com, eforward2.registrar-servers.com, eforward3.registrar-servers.com, eforward4.registrar-servers.com and eforward5.registrar-servers.com.
mastercourse.net shares mail servers with other domains at least in part, for instance victoriafurnaceservices.com, steamreaders.com, chasingthedragon.us, youtube-to-mp3.net and sycore.biz.
these mail servers are often used with eforward6.registrar-servers.com and eforward7.registrar-servers.com.
Host names with a single IP:
eforward1.registrar-servers.com points to: 162.255.118.51.
eforward2.registrar-servers.com points to: 162.255.118.52.
eforward3.registrar-servers.com points to: 162.255.118.51.
eforward4.registrar-servers.com points to: 162.255.118.52.
eforward5.registrar-servers.com points to: 162.255.118.51.
Host names pointing to 162.255.118.51: eforward1.registrar-servers.com, eforward3.registrar-servers.com and eforward5.registrar-servers.com.
Host names pointing to 162.255.118.52: eforward2.registrar-servers.com and eforward4.registrar-servers.com.
Common mappings: eforward1.registrar-servers.com, eforward3.registrar-servers.com and eforward5.registrar-servers.com point to 162.255.118.51; eforward2.registrar-servers.com and eforward4.registrar-servers.com point to 162.255.118.52.