11stud.io - robtex.com
11stud.io
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3032::ac43:dbbe🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3035::6815:18a6🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.24.166Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.219.190🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | donna.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::adf5:3a97🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | donna.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c097🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | donna.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:2097🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | donna.ns.cloudflare.com | ||||||
| A | 108.162.192.151🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | donna.ns.cloudflare.com | ||||||
| A | 172.64.32.151🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | donna.ns.cloudflare.com | ||||||
| A | 173.245.58.151🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | donna.ns.cloudflare.com | ||||||
| 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 | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.24.166, 172.67.219.190 | ||||||
| IPv6 hints | 2606:4700:3032::ac43:dbbe, 2606:4700:3035::6815:18a6 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=92, name=cloudflare-ech.com | ||||||
| SOA | donna.ns.cloudflare.comdns@cloudflare.com serial=2406380718 | ||||||
io
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.nic.io ⭐ | ||||||
| NS | a2.nic.io | ||||||
| NS | b0.nic.io | ||||||
| NS | c0.nic.io | ||||||
| SOA | a0.nic.iohostmaster@donuts.email serial=1784331289 | ||||||
Same first word
11stud.io |
DNS History
8 records (6 active, 2 former)
●NSdonna.ns.cloudflare.com2026-06-11 → 2026-07-18 · 2 obs
● 2026-07-18 00:01:10
●NSleo.ns.cloudflare.com2026-06-11 → 2026-07-18 · 2 obs
● 2026-07-18 00:01:10
●A104.21.24.1662026-06-11 → 2026-07-18 · 2 obs
● 2026-07-18 00:01:10
●A172.67.219.1902026-06-11 → 2026-07-18 · 2 obs
● 2026-07-18 00:01:10
○A2606:4700:3031::6815:18a62026-06-11 → 2026-06-15 · 4 obs
● 2026-06-15 10:39:36
○ 2026-06-23 02:33:56
○ 2026-07-18 00:01:10
●A2606:4700:3032::ac43:dbbe2026-06-23 → 2026-07-18 · 3 obs
● 2026-06-23 02:33:56
● 2026-07-18 00:01:10
●A2606:4700:3035::6815:18a62026-06-23 → 2026-07-18 · 3 obs
● 2026-06-23 02:33:56
● 2026-07-18 00:01:10
○A2606:4700:3037::ac43:dbbe2026-06-11 → 2026-06-15 · 4 obs
● 2026-06-15 10:39:36
○ 2026-06-23 02:33:56
○ 2026-07-18 00:01:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| io | a0.nic.io, a2.nic.io, b0.nic.io, c0.nic.io | - |
| 11stud.io | leo.ns.cloudflare.com, donna.ns.cloudflare.com | - |
✅ Authoritative Response
Server:108.162.192.151
NS records: leo.ns.cloudflare.com, donna.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for 11stud.io (unsigned zone)
⏱️ Timing
Total: 380ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.24.166, 172.67.219.190 |
| AAAA | 2 | 2606:4700:3032::ac43:dbbe, 2606:4700:3035::6815:18a6 |
| NS | 2 | donna.ns.cloudflare.com, leo.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | donna.ns.cloudflare.com dns.cloudflare.c |
Analysis
IP Addresses
11stud.io resolves to four IP addresses: 104.21.24.166, 172.67.219.190, 2606:4700:3032::ac43:dbbe and 2606:4700:3035::6815:18a6.
Two other host names, along with terraneoventures.sbs, zgyid.cn and nablagoe.ru, also share IP numbers with 11stud.io.
Name Servers
The NS records for 11stud.io delegate to donna.ns.cloudflare.com and leo.ns.cloudflare.com.
11stud.io shares its NS records with other domains, for example fdata.info, shortcutmedtech.io, dagathomo.buzz and two others.
11stud.io shares at least some of its name servers with other domains, including jabe.ru, newbansoswin.com, airsoftpistolreviews.com and two others.
These name servers are frequently paired with the name servers nash.ns.cloudflare.com and moura.ns.cloudflare.com.
DNS names with 6 IP addresses:
donna.ns.cloudflare.com maps to 108.162.192.151, 172.64.32.151, 173.245.58.151 and 3 additional IP addresses.
leo.ns.cloudflare.com maps to 108.162.195.241, 162.159.44.241, 172.64.35.241 and 3 additional IP addresses.