mail.cacourse.com - robtex.com

mail.cacourse.com

CNAMEtraff-https.hugedomains.com
CNAMEhdl-prd-https-0699149ba9be518e.elb.us-east-1.amazonaws.com
DNSSEC⚠️ Not signed
A2600:1f18:4ae:c605:dd5d:b838:5816:d7fb🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix
A2600:1f18:4ae:c606:78d4:4260:db4e:aeee🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix
A13.223.25.84🇺🇸 Amazon13.216.0.0/13 EC2 IAD prefix
A54.243.117.197🇺🇸 Amazon54.242.0.0/15 EC2 IAD prefix

cacourse.com

DNSSEC⚠️ Not signed
A2600:1f18:4ae:c605:dd5d:b838:5816:d7fb🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix
A2600:1f18:4ae:c606:78d4:4260:db4e:aeee🇺🇸 Amazon2600:1f18::/35 AMAZON EC2 IAD prefix
A13.223.25.84🇺🇸 Amazon13.216.0.0/13 EC2 IAD prefix
A54.243.117.197🇺🇸 Amazon54.242.0.0/15 EC2 IAD prefix
NSns1.namebrightdns.com ⭐
NSnsg1.namebrightdns.com
NSnsg2.namebrightdns.com
TXTv=spf1 -all
TXTafternic-verification-G9G3tM8T8EwEizzPzjGJWF
SOAns1.namebrightdns.comdns@namebright.com 2026-03-25 #1

Previously MX for

cacourse.com

Same first word

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DNS History

8 records (7 active, 1 former)

20162017201820192020202120222023202420252026NSnsg1.namebrightdns.comnsg2.namebrightdns.comA13.223.25.842600:1f18:4ae:c605:dd5d:b838:5816:d7fb2600:1f18:4ae:c606:78d4:4260:db4e:aeee54.243.117.197173.193.105.242CNAMEtraff-https.hugedomains.com
●NSnsg1.namebrightdns.com2026-02-26 → 2026-03-25 · 2 obs
● 2026-02-26 23:46:54
● 2026-03-25 17:24:36
●NSnsg2.namebrightdns.com2026-02-26 → 2026-03-25 · 2 obs
● 2026-02-26 23:46:54
● 2026-03-25 17:24:36
●A13.223.25.842026-02-26 → 2026-03-25 · 3 obs
○ 2016-08-10 20:19:04
● 2026-02-26 23:46:54
● 2026-03-25 17:24:36
○A173.193.105.2422015-08-21 → 2016-08-10 · 4 obs
● 2015-08-21 14:47:34
● 2016-08-10 20:19:04
○ 2026-02-26 23:46:54
○ 2026-03-25 17:24:36
●A2600:1f18:4ae:c605:dd5d:b838:5816:d7fb2026-02-26 → 2026-03-25 · 3 obs
○ 2016-08-10 20:19:04
● 2026-02-26 23:46:54
● 2026-03-25 17:24:36
●A2600:1f18:4ae:c606:78d4:4260:db4e:aeee2026-02-26 → 2026-03-25 · 3 obs
○ 2016-08-10 20:19:04
● 2026-02-26 23:46:54
● 2026-03-25 17:24:36
●A54.243.117.1972026-02-26 → 2026-03-25 · 3 obs
○ 2016-08-10 20:19:04
● 2026-02-26 23:46:54
● 2026-03-25 17:24:36
●CNAMEtraff-https.hugedomains.com2026-02-26 → 2026-03-25 · 2 obs
● 2026-02-26 23:46:54
● 2026-03-25 17:24:36

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comf.gtld-servers.net, h.gtld-servers.net, a.gtld-servers.net, c.gtld-servers.net...-
cacourse.comnsg1.namebrightdns.com, nsg2.namebrightdns.com17 records

✅ Authoritative Response

Server:3.89.209.21

NS records: nsg1.namebrightdns.com, nsg2.namebrightdns.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cacourse.com (unsigned zone)

⏱️ Timing

Total: 132ms | Queries: -

📄 Records

TypeCountSample Data
A213.223.25.84, 54.243.117.197
AAAA22600:1f18:4ae:c605:dd5d:b838:5816:d7fb, 2600:1f18:4ae:c606:78d4:4260:db4e:aeee
NS2nsg2.namebrightdns.com, nsg1.namebrightdns.com
CNAME1traff-https.hugedomains.com

📌 Glue Records Collected

Total: 17

Out-of-bailiwick: 17 (nsg1.namebrightdns.com, nsg1.namebrightdns.com, nsg1.namebrightdns.com...)

Analysis

IP Addresses

mail.cacourse.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 ig-c.com, arabam.yemek.hikayecim.com, 106a8.yhtxgroup.com, azacs.com and infoend.com share IP numbers with mail.cacourse.com.