courseres.com - robtex.com
courseres.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 207.56.172.16🇺🇸 USZNI-AS-AP207.56.160.0/20 | ||||||
| NS | ns1.domainnamedns.com ⭐ | ||||||
| A | 2a0e:df80:a:1::a5b🇺🇸 VMISS2a0e:df80:a::/48 | ||||||
| A | 38.165.22.197🇺🇸 VMISS38.165.22.0/24 Customer Route | ||||||
| NS | ns2.domainnamedns.com | ||||||
| A | 2604:86c0:2001:6::2672:72b7🇺🇸 AS630232604:86c0:2000::/36 GTHOST-LAX | ||||||
| A | 38.114.114.183🇨🇦 AS6302338.114.114.0/24 Route Registered for Cogent Communications Customer GLOBALTELEHOST CORP. | ||||||
| PTR | 183-114-114-38.clients.gthost.com | ||||||
| NS | ns3.domainnamedns.com ⚠️ Not in parent delegation | ||||||
| A | 2406:da18:e80:ec00:7b68:89e5:1ce1:c481🇸🇬 Amazon2406:da18:c00::/38 AWS | ||||||
| A | 54.151.142.119🇸🇬 Amazon54.151.128.0/17 SIN prefix | ||||||
| PTR | ec2-54-151-142-119.ap-southeast-1.compute.amazonaws.com | ||||||
| NS | ns4.domainnamedns.com ⚠️ Not in parent delegation | ||||||
| A | 2604:86c0:2001:c::43dc:4833🇺🇸 AS630232604:86c0:2000::/36 GTHOST-LAX | ||||||
| A | 67.220.72.51🇺🇸 AS6302367.220.72.0/24 GTHOST | ||||||
| PTR | 51-72-220-67.clients.gthost.com | ||||||
| SOA | ns1.domainnamedns.comsupport@namens.net serial=1761140826 | ||||||
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=1776943917 | ||||||
Same first word
courseres.com |
courseres.org |
Similar names
DNS History
9 records (5 active, 4 former)
●NSns1.domainnamedns.com2026-03-15 → 2026-04-23 · 3 obs
● 2026-03-15 01:20:10
● 2026-04-23 11:45:22
●NSns2.domainnamedns.com2026-03-15 → 2026-04-23 · 3 obs
● 2026-03-15 01:20:10
● 2026-04-23 11:45:22
●NSns3.domainnamedns.com2026-03-15 → 2026-04-23 · 3 obs
● 2026-03-15 01:20:10
● 2026-04-23 11:45:22
●NSns4.domainnamedns.com2026-03-15 → 2026-04-23 · 3 obs
● 2026-03-15 01:20:10
● 2026-04-23 11:45:22
○NSvip1.alidns.com2017-11-14 → 2017-11-14 · 3 obs
○ 2026-03-15 01:20:10
○ 2026-04-23 11:45:22
○NSvip2.alidns.com2017-11-14 → 2017-11-14 · 3 obs
○ 2026-03-15 01:20:10
○ 2026-04-23 11:45:22
○MXmxn.mxhichina.com2017-11-14 → 2017-11-14 · 3 obs
○ 2026-03-15 01:20:10
○ 2026-04-23 11:45:22
○MXmxw.mxhichina.com2017-11-14 → 2017-11-14 · 3 obs
○ 2026-03-15 01:20:10
○ 2026-04-23 11:45:22
●A207.56.172.162026-03-15 → 2026-04-23 · 2 obs
● 2026-04-23 11:45:22
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| courseres.com | expirens3.hichina.com, expirens4.hichina.com | 18 records |
✅ Authoritative Response
Server:47.118.199.192
NS records: expirens3.hichina.com, expirens4.hichina.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for courseres.com (unsigned zone)
⏱️ Timing
Total: 3578ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 2 | ns8.alidns.com, ns7.alidns.com |
| CNAME | 1 | expired.hichina.com |
| SOA | 1 | ns7.alidns.com hostmaster.hichina.com |
📌 Glue Records Collected
Total: 18
Out-of-bailiwick: 18 (expirens3.hichina.com, expirens3.hichina.com, expirens3.hichina.com...)
Analysis
IP Addresses
courseres.com resolves to one IP number: 207.56.172.16.
Name Servers
courseres.com is delegated to four name servers: ns1.domainnamedns.com, ns2.domainnamedns.com, ns3.domainnamedns.com and ns4.domainnamedns.com.
courseres.com at least partially shares name servers with other domains, for instance whatsapp-vvsu.com, 675902.top, hebeijcgs.com, inaksim.com and ifotoua.com.
Host names with two IP numbers:
ns1.domainnamedns.com points to 2a0e:df80:a:1::a5b and 38.165.22.197; ns2.domainnamedns.com points to 2604:86c0:2001:6::2672:72b7 and 38.114.114.183; ns3.domainnamedns.com points to 2406:da18:e80:ec00:7b68:89e5:1ce1:c481 and 54.151.142.119; ns4.domainnamedns.com points to 2604:86c0:2001:c::43dc:4833 and 67.220.72.51.