estocourse.courses - robtex.com
estocourse.courses
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3033::6815:1aee🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3033::ac43:a89a🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.26.238Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.168.154🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | aria.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::adf5:3a44🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | aria.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c044🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | aria.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2044🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | aria.ns.cloudflare.com | ||||||
| A | 108.162.192.68🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | aria.ns.cloudflare.com | ||||||
| A | 172.64.32.68🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | aria.ns.cloudflare.com | ||||||
| A | 173.245.58.68🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | aria.ns.cloudflare.com | ||||||
| NS | mario.ns.cloudflare.com | ||||||
| A | 2606:4700:58::adf5:3bcb🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | mario.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c1cb🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | mario.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:21cb🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | mario.ns.cloudflare.com | ||||||
| A | 108.162.193.203🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | mario.ns.cloudflare.com | ||||||
| A | 172.64.33.203🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | mario.ns.cloudflare.com | ||||||
| A | 173.245.59.203🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | mario.ns.cloudflare.com | ||||||
| TXT | google-site-verification=8JEEXy2rAOlrr7Fo8y2mb61rFOBLIUKRjEiEVhRtxQk | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.26.238, 172.67.168.154 | ||||||
| IPv6 hints | 2606:4700:3033::6815:1aee, 2606:4700:3033::ac43:a89a | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=125, name=cloudflare-ech.com | ||||||
| SOA | aria.ns.cloudflare.comdns@cloudflare.com serial=2407543869 | ||||||
courses
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.nic.courses ⭐ | ||||||
| NS | b.nic.courses | ||||||
| NS | c.nic.courses | ||||||
| NS | x.nic.courses | ||||||
| NS | y.nic.courses | ||||||
| NS | z.nic.courses | ||||||
| SOA | a.nic.coursesadmin@tldns.godaddy serial=1783094681 | ||||||
Same first word
estocourse.media |
estocourse.cloud |
estocourse.courses |
estocourse.download |
estocourse.men |
estocourse.mom |
estocourse.chat |
Similar names
DNS History
10 records (6 active, 4 former)
●NSaria.ns.cloudflare.com2026-06-23 → 2026-07-03 · 2 obs
● 2026-07-03 16:24:16
●NSmario.ns.cloudflare.com2026-06-23 → 2026-07-03 · 2 obs
● 2026-07-03 16:24:16
●A104.21.26.2382026-07-03 → 2026-07-03 · 2 obs
● 2026-07-03 16:24:16
●A172.67.168.1542026-07-03 → 2026-07-03 · 2 obs
● 2026-07-03 16:24:16
○A188.114.96.02026-06-23 → 2026-06-23 · 2 obs
○ 2026-07-03 16:24:16
○A188.114.97.02026-06-23 → 2026-06-23 · 2 obs
○ 2026-07-03 16:24:16
●A2606:4700:3033::6815:1aee2026-07-03 → 2026-07-03 · 2 obs
● 2026-07-03 16:24:16
●A2606:4700:3033::ac43:a89a2026-07-03 → 2026-07-03 · 2 obs
● 2026-07-03 16:24:16
○A2a06:98c1:3120::2026-06-23 → 2026-06-23 · 2 obs
○ 2026-07-03 16:24:16
○A2a06:98c1:3121::2026-06-23 → 2026-06-23 · 2 obs
○ 2026-07-03 16:24:16
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| courses | x.nic.courses, c.nic.courses, a.nic.courses, b.nic.courses... | 12 records |
| estocourse.courses | mario.ns.cloudflare.com, aria.ns.cloudflare.com | - |
✅ Authoritative Response
Server:172.64.33.203
NS records: mario.ns.cloudflare.com, aria.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for estocourse.courses (unsigned zone)
⏱️ Timing
Total: 509ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.168.154, 104.21.26.238 |
| AAAA | 2 | 2606:4700:3033::6815:1aee, 2606:4700:3033::ac43:a89a |
| NS | 2 | aria.ns.cloudflare.com, mario.ns.cloudflare.com |
| TXT | 1 | google-site-verification=8JEEXy2rAOlrr7F |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | aria.ns.cloudflare.com dns.cloudflare.co |
📌 Glue Records Collected
Total: 12
In-bailiwick: 12 (a.nic.courses, b.nic.courses, c.nic.courses...)
Analysis
IP Addresses
estocourse.courses directs to four IP numbers, which are 104.21.26.238, 172.67.168.154, 2606:4700:3033::6815:1aee and 2606:4700:3033::ac43:a89a.
iloivp.casa, thecbdboxes.com, www.pyxtechnologies.com plus two other host names have IP numbers in common with estocourse.courses.
Name Servers
estocourse.courses has two authoritative name servers — aria.ns.cloudflare.com and mario.ns.cloudflare.com.
The name server configuration of estocourse.courses is shared with other domains, for instance electrical-cable.com, atairac.com, fluentcity.com and two others.
The name servers of estocourse.courses overlap at least partially with those of other domains — among them worldwideboatbrokers.com.au, dropstreams.com, salt.edu and two more.
The name servers elaine.ns.cloudflare.com, igor.ns.cloudflare.com and charles.ns.cloudflare.com are commonly seen alongside these name servers.
Hosts with 6 IP addresses each:
aria.ns.cloudflare.com points to 108.162.192.68, 172.64.32.68, 173.245.58.68 and 3 other IP addresses.
mario.ns.cloudflare.com points to 108.162.193.203, 172.64.33.203, 173.245.59.203 and 3 other IP addresses.