courseknowledge.com - robtex.com
courseknowledge.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 12.157.35.51🇺🇸 AS701812.128.0.0/9 12/8 upper half | ||||||
| NS | dns101.register.com ⭐ | ||||||
| A | 162.159.24.117Cloudflare162.159.24.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| NS | dns102.register.com | ||||||
| A | 162.159.25.158Cloudflare162.159.25.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| SOA | DNS101.REGISTER.comroot@REGISTER.com serial=120042815 | ||||||
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=1788522515 | ||||||
Same first word
courseknowledge.com |
Similar names
Previous names
Next names
DNS History
8 records (3 active, 5 former)
○NSdns010.d.register.com2015-07-23 → 2017-06-14 · 4 obs
● 2017-06-14 17:07:58
○ 2026-09-02 19:07:34
○ 2026-09-04 12:08:28
○NSdns012.a.register.com2015-07-23 → 2017-06-14 · 4 obs
● 2017-06-14 17:07:58
○ 2026-09-02 19:07:34
○ 2026-09-04 12:08:28
○NSdns048.c.register.com2015-07-23 → 2017-06-14 · 4 obs
● 2017-06-14 17:07:58
○ 2026-09-02 19:07:34
○ 2026-09-04 12:08:28
○NSdns080.b.register.com2015-07-23 → 2017-06-14 · 4 obs
● 2017-06-14 17:07:58
○ 2026-09-02 19:07:34
○ 2026-09-04 12:08:28
●NSdns101.register.com2026-09-02 → 2026-09-04 · 3 obs
● 2026-09-02 19:07:34
● 2026-09-04 12:08:28
●NSdns102.register.com2026-09-02 → 2026-09-04 · 3 obs
● 2026-09-02 19:07:34
● 2026-09-04 12:08:28
○MXp.webcom.ctmail.com2016-06-28 → 2017-06-14 · 4 obs
● 2017-06-14 17:07:58
○ 2026-09-02 19:07:34
○ 2026-09-04 12:08:28
●A12.157.35.512015-07-23 → 2026-09-04 · 2 obs
● 2026-09-04 12:08:28
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | m.gtld-servers.net, b.gtld-servers.net, h.gtld-servers.net, d.gtld-servers.net... | - |
| courseknowledge.com | dns101.register.com, dns102.register.com | 2 records |
✅ Authoritative Response
Server:162.159.24.117
NS records: dns101.register.com, dns102.register.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for courseknowledge.com (unsigned zone)
⏱️ Timing
Total: 247ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 12.157.35.51 |
| NS | 2 | dns101.register.com, dns102.register.com |
| SOA | 1 | DNS101.REGISTER.com root.REGISTER.com |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (dns101.register.com, dns102.register.com)
Analysis
IP Addresses
courseknowledge.com resolves to just one IP address, 12.157.35.51.
Additional host names such as stevefranklinmusic.com, mail.laurafranklinmusic.com, laurafranklinmusic.com and mail.stevefranklinmusic.com share IP numbers with courseknowledge.com.
Name Servers
courseknowledge.com is served by two delegated name servers, dns101.register.com and dns102.register.com.
courseknowledge.com shares its NS records with other domains, for example horribledreams.com, awihealtexas.com, domicilegame.com and two others.
At least some of courseknowledge.com's name servers are shared with other domains, for example poker.fm and panamaonsale.com.
Each of dns101.register.com and dns102.register.com has one IP address: dns101.register.com uses 162.159.24.117 and dns102.register.com uses 162.159.25.158.