jsdevcourse.info - dns.ninja
jsdevcourse.info
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3033::6815:1b1f🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3036::ac43:a8da🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.27.31Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.168.218🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | leo.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::a29f:2cf1🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | leo.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c3f1🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | leo.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:23f1🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | leo.ns.cloudflare.com | ||||||
| A | 108.162.195.241🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | leo.ns.cloudflare.com | ||||||
| A | 162.159.44.241Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | leo.ns.cloudflare.com | ||||||
| A | 172.64.35.241🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | leo.ns.cloudflare.com | ||||||
| NS | pat.ns.cloudflare.com | ||||||
| A | 2606:4700:50::adf5:3a8b🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | pat.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c08b🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | pat.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:208b🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | pat.ns.cloudflare.com | ||||||
| A | 108.162.192.139🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | pat.ns.cloudflare.com | ||||||
| A | 172.64.32.139🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | pat.ns.cloudflare.com | ||||||
| A | 173.245.58.139🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | pat.ns.cloudflare.com | ||||||
| MX | mail.jsdevcourse.info ⭐ | ||||||
| A | 185.247.225.7🇷🇴 FlokiNET185.247.225.0/24 | ||||||
| PTR | ro8.flokinet.is | ||||||
| TXT | v=spf1 a mx ~all | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.27.31, 172.67.168.218 | ||||||
| IPv6 hints | 2606:4700:3033::6815:1b1f, 2606:4700:3036::ac43:a8da | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=87, name=cloudflare-ech.com | ||||||
| SOA | leo.ns.cloudflare.comdns@cloudflare.com serial=2417270710 | ||||||
info
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.info.afilias-nst.info ⭐ | ||||||
| NS | a2.info.afilias-nst.info | ||||||
| NS | b0.info.afilias-nst.org ⚠️ Not in parent delegation | ||||||
| NS | b2.info.afilias-nst.org ⚠️ Not in parent delegation | ||||||
| NS | c0.info.afilias-nst.info | ||||||
| NS | d0.info.afilias-nst.org ⚠️ Not in parent delegation | ||||||
| SOA | a0.info.afilias-nst.infohostmaster@donuts.email serial=1794490423 | ||||||
Subdomains
mail.jsdevcourse.info |
Same first word
jsdevcourse.info |
Previous names
jsdb.info |
jsdbcuervu.info |
jsdc.info |
jsdecoder.info |
jsdefi.info |
jsdeliver.info |
jsdelivr.info |
jsdelivre.info |
jsdentallab.info |
jsdeqvkallh.info |
jsdesign.info |
jsdesignswraps.info |
jsdev-course.info |
jsdev.info |
Next names
jsdeveloper.info |
jsdevelopment.info |
jsdf.info |
jsdhgt.info |
jsdiamondenterprises.info |
jsdigitalmarketing.info |
jsdkzq.info |
jsdm-live-cctv.info |
jsdn.info |
jsdns.info |
jsdoc.info |
DNS History
11 records (7 active, 4 former)
●NSleo.ns.cloudflare.com2026-09-10 → 2026-11-12 · 2 obs
● 2026-11-12 14:35:40
●NSpat.ns.cloudflare.com2026-09-10 → 2026-11-12 · 2 obs
● 2026-11-12 14:35:40
●MXmail.jsdevcourse.info2026-09-10 → 2026-11-12 · 2 obs
● 2026-11-12 14:35:40
●A104.21.27.312026-09-22 → 2026-11-12 · 3 obs
● 2026-09-22 10:48:36
● 2026-11-12 14:35:40
●A172.67.168.2182026-09-22 → 2026-11-12 · 3 obs
● 2026-09-22 10:48:36
● 2026-11-12 14:35:40
○A188.114.96.02026-09-10 → 2026-09-10 · 3 obs
○ 2026-09-22 10:48:36
○ 2026-11-12 14:35:40
○A188.114.97.02026-09-10 → 2026-09-10 · 3 obs
○ 2026-09-22 10:48:36
○ 2026-11-12 14:35:40
●A2606:4700:3033::6815:1b1f2026-09-22 → 2026-11-12 · 3 obs
● 2026-09-22 10:48:36
● 2026-11-12 14:35:40
●A2606:4700:3036::ac43:a8da2026-09-22 → 2026-11-12 · 3 obs
● 2026-09-22 10:48:36
● 2026-11-12 14:35:40
○A2a06:98c1:3120::2026-09-10 → 2026-09-10 · 3 obs
○ 2026-09-22 10:48:36
○ 2026-11-12 14:35:40
○A2a06:98c1:3121::2026-09-10 → 2026-09-10 · 3 obs
○ 2026-09-22 10:48:36
○ 2026-11-12 14:35:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| info | a0.info.afilias-nst.info, c0.info.afilias-nst.info, a2.info.afilias-nst.info | - |
| jsdevcourse.info | leo.ns.cloudflare.com, pat.ns.cloudflare.com | - |
✅ Authoritative Response
Server:162.159.44.241
NS records: leo.ns.cloudflare.com, pat.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for jsdevcourse.info (unsigned zone)
⏱️ Timing
Total: 1402ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.27.31, 172.67.168.218 |
| AAAA | 2 | 2606:4700:3033::6815:1b1f, 2606:4700:3036::ac43:a8da |
| NS | 2 | leo.ns.cloudflare.com, pat.ns.cloudflare.com |
| MX | 1 | mail.jsdevcourse.info (pri: 10) |
| TXT | 1 | v=spf1 a mx ~all |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | leo.ns.cloudflare.com dns.cloudflare.com |
Analysis
Hierarchy
jsdevcourse.info is the parent zone for mail.jsdevcourse.info.
IP Addresses
jsdevcourse.info has four IP addresses: 104.21.27.31, 172.67.168.218, 2606:4700:3033::6815:1b1f and 2606:4700:3036::ac43:a8da.
everoutreachgurkha.com, sterlingvaultai.live, uk88me.com plus two other host names have IP numbers in common with jsdevcourse.info.
Name Servers
Two name servers handle the delegation for jsdevcourse.info: leo.ns.cloudflare.com and pat.ns.cloudflare.com.
The name server configuration of jsdevcourse.info is shared with other domains, for instance 1xbetperu.com, technikandmore.com, fallalhimohsen.workers.dev and two others.
jsdevcourse.info partially shares its NS delegation with several other domains, including n0i5.buzz, 158888.vip, 207luckbr.com and two others.
These name servers are regularly seen alongside jade.ns.cloudflare.com and erin.ns.cloudflare.com as name servers.
Hosts with 6 IP addresses each:
leo.ns.cloudflare.com resolves to 108.162.195.241, 162.159.44.241 and 172.64.35.241 among others, with 3 other IP addresses in total.
pat.ns.cloudflare.com resolves to 108.162.192.139, 172.64.32.139 and 173.245.58.139 among others, with 3 other IP addresses in total.
Mail Servers
jsdevcourse.info uses one mail server — mail.jsdevcourse.info.
mail.jsdevcourse.info carries a single IP number, which is 185.247.225.7.