courseg.com - robtex.com
courseg.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns-1452.awsdns-53.org ⚠️ Not in zone NS records | ||||||
| A | 2600:9000:5305:ac00::1🇺🇸 Amazon2600:9000:5305::/48 - CloudFront | ||||||
| PTR | ns-1452.awsdns-53.org | ||||||
| A | 205.251.197.172🇺🇸 Amazon205.251.197.0/24 prefix | ||||||
| PTR | ns-1452.awsdns-53.org | ||||||
| NS | ns-1965.awsdns-53.co.uk ⚠️ Not in zone NS records | ||||||
| A | 2600:9000:5307:ad00::1🇺🇸 Amazon2600:9000:5307::/48 - CloudFront | ||||||
| PTR | ns-1965.awsdns-53.co.uk | ||||||
| A | 205.251.199.173🇺🇸 Amazon205.251.199.0/24 prefix | ||||||
| PTR | ns-1965.awsdns-53.co.uk | ||||||
| NS | ns-287.awsdns-35.com ⚠️ Not in zone NS records | ||||||
| A | 2600:9000:5301:1f00::1🇺🇸 Amazon2600:9000:5301::/48 - CloudFront | ||||||
| PTR | ns-287.awsdns-35.com | ||||||
| A | 205.251.193.31🇺🇸 Amazon205.251.193.0/24 prefix | ||||||
| PTR | ns-287.awsdns-35.com | ||||||
| NS | ns-779.awsdns-33.net ⚠️ Not in zone NS records | ||||||
| A | 2600:9000:5303:b00::1🇺🇸 Amazon2600:9000:5303::/48 - CloudFront | ||||||
| PTR | ns-779.awsdns-33.net | ||||||
| A | 205.251.195.11🇺🇸 Amazon205.251.195.0/24 prefix | ||||||
| PTR | ns-779.awsdns-33.net | ||||||
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=1783840952 | ||||||
Previously MX for
courseg.com |
Same first word
courseg.com |
Similar names
DNS History
8 records (4 active, 4 former)
●NSns-1452.awsdns-53.org2026-07-01 → 2026-07-12 · 3 obs
● 2026-07-01 00:48:44
● 2026-07-12 07:42:18
●NSns-1965.awsdns-53.co.uk2026-07-01 → 2026-07-12 · 3 obs
● 2026-07-01 00:48:44
● 2026-07-12 07:42:18
●NSns-287.awsdns-35.com2026-07-01 → 2026-07-12 · 3 obs
● 2026-07-01 00:48:44
● 2026-07-12 07:42:18
●NSns-779.awsdns-33.net2026-07-01 → 2026-07-12 · 3 obs
● 2026-07-01 00:48:44
● 2026-07-12 07:42:18
○NSns1.secureserver.net2015-05-27 → 2017-04-09 · 4 obs
● 2017-04-09 05:47:26
○ 2026-07-01 00:48:44
○ 2026-07-12 07:42:18
○NSns2.secureserver.net2015-05-27 → 2017-04-09 · 4 obs
● 2017-04-09 05:47:26
○ 2026-07-01 00:48:44
○ 2026-07-12 07:42:18
○MXcourseg.com2015-05-27 → 2017-04-09 · 4 obs
● 2017-04-09 05:47:26
○ 2026-07-01 00:48:44
○ 2026-07-12 07:42:18
○A166.62.39.272015-05-27 → 2017-04-09 · 4 obs
● 2017-04-09 05:47:26
○ 2026-07-01 00:48:44
○ 2026-07-12 07:42:18
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| courseg.com | ns-287.awsdns-35.com, ns-779.awsdns-33.net, ns-1965.awsdns-53.co.uk, ns-1452.awsdns-53.org | 2 records |
✅ Authoritative Response
Server:205.251.193.31
NS records: ns-287.awsdns-35.com, ns-779.awsdns-33.net, ns-1965.awsdns-53.co.uk, ns-1452.awsdns-53.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for courseg.com (unsigned zone)
⏱️ Timing
Total: 600ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-287.awsdns-35.com, ns-287.awsdns-35.com)
Analysis
Name Servers
The authoritative name servers for courseg.com are ns-287.awsdns-35.com, ns-779.awsdns-33.net, ns-1452.awsdns-53.org and ns-1965.awsdns-53.co.uk.
There is at least partial name server overlap between courseg.com and other domains — 228.103.75.in-addr.arpa, pagavi.com, energyservices.cloud and two more among them.
These name servers tend to appear in combination with the name servers ns-239.awsdns-29.com, ns-1388.awsdns-45.org, ns-1853.awsdns-39.co.uk and ns-847.awsdns-41.net.
All four hostnames — ns-287.awsdns-35.com, ns-779.awsdns-33.net, ns-1452.awsdns-53.org and ns-1965.awsdns-53.co.uk — resolve to two IP numbers apiece: ns-287.awsdns-35.com to 205.251.193.31 and 2600:9000:5301:1f00::1; ns-779.awsdns-33.net to 205.251.195.11 and 2600:9000:5303:b00::1; ns-1452.awsdns-53.org to 205.251.197.172 and 2600:9000:5305:ac00::1; ns-1965.awsdns-53.co.uk to 205.251.199.173 and 2600:9000:5307:ad00::1.