courseworld.net - robtex.com
courseworld.net
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2a07:7800::217🇬🇧 TWENTYI2a07:7800::/48 | ||||||
| A | 185.146.167.201🇬🇧 TWENTYI185.146.167.0/24 | ||||||
| NS | ns1.stackdns.com ⭐ | ||||||
| A | 35.197.225.59🇬🇧 Google35.197.224.0/20 | ||||||
| PTR | 59.225.197.35.bc.googleusercontent.com | ||||||
| NS | ns2.stackdns.com | ||||||
| A | 146.148.28.88🇧🇪 Google146.148.16.0/20 | ||||||
| PTR | 88.28.148.146.bc.googleusercontent.com | ||||||
| NS | ns3.stackdns.com | ||||||
| A | 35.198.79.191🇩🇪 Google35.198.64.0/20 | ||||||
| PTR | 191.79.198.35.bc.googleusercontent.com | ||||||
| NS | ns4.stackdns.com | ||||||
| A | 104.196.137.209🇺🇸 Google104.196.128.0/20 | ||||||
| PTR | 209.137.196.104.bc.googleusercontent.com | ||||||
| MX | mx.stackmail.com ⭐ | ||||||
| A | 185.151.28.67🇬🇧 TWENTYI185.151.28.0/24 | ||||||
| PTR | mx.stackmail.com | ||||||
| TXT | v=spf1 include:spf.stackmail.com a mx -all | ||||||
| SOA | ns1.stackdns.comhostmaster@stackdns.com serial=1734442824 | ||||||
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=1778600271 | ||||||
Same first word
courseworld.com |
courseworld.org |
courseworld.net |
Similar names
DNS History
17 records (7 active, 10 former)
○NSdns101.registrar-servers.com2026-05-12 → 2026-05-12 · 2 obs
○ 2026-05-12 15:50:42
○NSdns102.registrar-servers.com2026-05-12 → 2026-05-12 · 2 obs
○ 2026-05-12 15:50:42
●NSns1.stackdns.com2026-05-12 → 2026-05-12 · 3 obs
● 2026-05-12 15:50:40
● 2026-05-12 15:50:42
●NSns2.stackdns.com2026-05-12 → 2026-05-12 · 3 obs
● 2026-05-12 15:50:40
● 2026-05-12 15:50:42
●NSns3.stackdns.com2026-05-12 → 2026-05-12 · 3 obs
● 2026-05-12 15:50:40
● 2026-05-12 15:50:42
●NSns4.stackdns.com2026-05-12 → 2026-05-12 · 3 obs
● 2026-05-12 15:50:40
● 2026-05-12 15:50:42
○NSns47.domaincontrol.com2015-07-07 → 2020-04-13 · 4 obs
● 2020-04-13 18:47:18
○ 2026-05-12 15:50:40
○ 2026-05-12 15:50:42
○NSns48.domaincontrol.com2015-07-07 → 2020-04-13 · 4 obs
● 2020-04-13 18:47:18
○ 2026-05-12 15:50:40
○ 2026-05-12 15:50:42
○MXmailstore1.secureserver.net2015-07-07 → 2020-04-13 · 4 obs
● 2020-04-13 18:47:18
○ 2026-05-12 15:50:40
○ 2026-05-12 15:50:42
○MXmx.plingest.com2026-05-12 → 2026-05-12 · 2 obs
○ 2026-05-12 15:50:42
●MXmx.stackmail.com2026-05-12 → 2026-05-12 · 3 obs
● 2026-05-12 15:50:40
● 2026-05-12 15:50:42
○MXsmtp.secureserver.net2015-07-07 → 2020-04-13 · 4 obs
● 2020-04-13 18:47:18
○ 2026-05-12 15:50:40
○ 2026-05-12 15:50:42
○A172.234.24.2112026-05-12 → 2026-05-12 · 2 obs
○ 2026-05-12 15:50:42
○A172.239.57.1172026-05-12 → 2026-05-12 · 2 obs
○ 2026-05-12 15:50:42
●A185.146.167.2012026-05-12 → 2026-05-12 · 3 obs
● 2026-05-12 15:50:40
● 2026-05-12 15:50:42
●A2a07:7800::2172026-05-12 → 2026-05-12 · 3 obs
● 2026-05-12 15:50:40
● 2026-05-12 15:50:42
○A50.63.202.352015-07-07 → 2020-04-13 · 4 obs
● 2020-04-13 18:47:18
○ 2026-05-12 15:50:40
○ 2026-05-12 15:50:42
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| courseworld.net | ns1.stackdns.com, ns2.stackdns.com, ns3.stackdns.com, ns4.stackdns.com | - |
✅ Authoritative Response
Server:35.197.225.59
NS records: ns1.stackdns.com, ns2.stackdns.com, ns3.stackdns.com, ns4.stackdns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for courseworld.net (unsigned zone)
⏱️ Timing
Total: 947ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 185.146.167.201 |
| AAAA | 1 | 2a07:7800::217 |
| NS | 4 | ns2.stackdns.com, ns1.stackdns.com... |
| MX | 1 | mx.stackmail.com (pri: 10) |
| TXT | 1 | v=spf1 include:spf.stackmail.com a mx -a |
| SOA | 1 | ns1.stackdns.com hostmaster.stackdns.com |
Analysis
IP Addresses
courseworld.net points to two IP numbers: 2a07:7800::217 and 185.146.167.201.
Other host names, for instance gueter.brookic.iwebs.ws, lacor.iwebs.ws, dionysi.net, www.arpbpo.com and srplive.in share IP numbers with courseworld.net.
Name Servers
courseworld.net is delegated to four name servers: ns1.stackdns.com, ns2.stackdns.com, ns3.stackdns.com and ns4.stackdns.com.
courseworld.net at least partially shares its name servers with other domains, for instance portalnews.co, chambertraining.com, shipais.com, zagada.me.uk and gardelectricalcontracting.com.
Host names with one IP number: ns1.stackdns.com points to 35.197.225.59; ns2.stackdns.com points to 146.148.28.88; ns3.stackdns.com points to 35.198.79.191; ns4.stackdns.com points to 104.196.137.209.
Mail Servers
courseworld.net is served by a single mail server, mx.stackmail.com.
courseworld.net uses the same mail server setup as other domains such as menetech.com, reproductivesurgery.net, ukbitcoinblog.com, cannabisedible(0x736578)po.com and kenn.co.uk.
courseworld.net shares some mail servers with other domains at least partially, for example dreamnw.com.
mx.stackmail.com points to IP number 185.151.28.67.