coursergroup.com - robtex.com
coursergroup.com
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=1771291435 | ||||||
Same first word
coursergroup.com |
DNS History
11 records (7 active, 4 former)
●NSns1.namebrightdns.com2026-03-23 → 2026-03-23 · 2 obs
● 2026-03-23 11:57:04
●NSnsg1.namebrightdns.com2026-03-23 → 2026-03-23 · 2 obs
● 2026-03-23 11:57:04
●NSnsg2.namebrightdns.com2026-03-23 → 2026-03-23 · 2 obs
● 2026-03-23 11:57:04
○NSvip1.alidns.com2017-01-27 → 2017-01-27 · 3 obs
○ 2020-02-06 23:13:56
○ 2026-03-23 11:57:04
○NSvip2.alidns.com2017-01-27 → 2017-01-27 · 3 obs
○ 2020-02-06 23:13:56
○ 2026-03-23 11:57:04
○MXmxn.mxhichina.com2017-01-27 → 2017-01-27 · 3 obs
○ 2020-02-06 23:13:56
○ 2026-03-23 11:57:04
○MXmxw.mxhichina.com2017-01-27 → 2017-01-27 · 3 obs
○ 2020-02-06 23:13:56
○ 2026-03-23 11:57:04
●A13.223.25.842026-03-23 → 2026-03-23 · 1 obs
●A2600:1f18:4ae:c605:dd5d:b838:5816:d7fb2026-03-23 → 2026-03-23 · 1 obs
●A2600:1f18:4ae:c606:78d4:4260:db4e:aeee2026-03-23 → 2026-03-23 · 1 obs
●A54.243.117.1972026-03-23 → 2026-03-23 · 1 obs
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | e.gtld-servers.net, k.gtld-servers.net, l.gtld-servers.net, a.gtld-servers.net... | - |
| coursergroup.com | nsg1.namebrightdns.com, nsg2.namebrightdns.com | 22 records |
✅ Authoritative Response
Server:13.221.125.168
NS records: nsg1.namebrightdns.com, nsg2.namebrightdns.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for coursergroup.com (unsigned zone)
⏱️ Timing
Total: 257ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 13.223.25.84, 54.243.117.197 |
| AAAA | 2 | 2600:1f18:4ae:c605:dd5d:b838:5816:d7fb, 2600:1f18:4ae:c606:78d4:4260:db4e:aeee |
| NS | 2 | nsg2.namebrightdns.com, nsg1.namebrightdns.com |
| TXT | 2 | v=spf1 -all, afternic-verification-G9G3tM8T8EwEizzPzj |
| SOA | 1 | ns1.namebrightdns.com dns.namebright.com |
📌 Glue Records Collected
Total: 22
Out-of-bailiwick: 22 (nsg1.namebrightdns.com, nsg1.namebrightdns.com, nsg1.namebrightdns.com...)
Analysis
IP Addresses
coursergroup.com maps to four IP numbers: 2600:1f18:4ae:c605:dd5d:b838:5816:d7fb, 2600:1f18:4ae:c606:78d4:4260:db4e:aeee, 13.223.25.84 and 54.243.117.197.
Other host names, for instance axmarine.com, 9.43.85.bath.highspeedrails.com, ttrgames.com, wattlots.com and mail.bulletteam.com share IP numbers with coursergroup.com.
Name Servers
coursergroup.com is delegated to name servers ns1.namebrightdns.com, nsg1.namebrightdns.com and nsg2.namebrightdns.com.
coursergroup.com at least partially shares name servers with other domains such as pulmet.com, unomark.com, www.xiaoxiao99.com, desvestir.com and singularvalue.com.
These name servers are commonly used alongside ns2.namebrightdns.com, domain-for-sale.hugedomainsdns.com and forsale.hugedomainsdns.com.
Host names with nine IP numbers: nsg1.namebrightdns.com points to 2600:1f18:683a:ae1a:29f5:9f2d:323d:944b, 2600:1f18:683a:ae1a:6050:8493:87b1:d4a9, 2600:1f18:683a:ae1b:2eeb:def5:98eb:a7b7, 2600:1f18:683a:ae1b:3180:570e:1a09:8e12, 2600:1f18:683a:ae1b:5775:a328:2f59:17b7, 18.232.132.132, 34.207.55.42, 34.207.131.235 and 54.87.7.90.
Host names with six IP numbers: nsg2.namebrightdns.com points to 2600:1f18:683a:ae1a:8ce4:b69a:5395:a667, 2600:1f18:683a:ae1a:f1dc:f785:ea95:934, 2600:1f18:683a:ae1b:c46e:c671:5339:dce0, 18.212.87.210, 54.91.71.34 and 98.84.156.86.
Host names with five IP numbers: ns1.namebrightdns.com points to 2600:1f18:683a:ae1a:165d:d9b5:87c0:94e0, 2600:1f18:683a:ae1a:7107:667d:570b:171e, 2600:1f18:683a:ae1b:36f4:3cd1:55dc:15, 3.208.27.76 and 13.222.185.86.