study021.com - robtex.com
study021.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3035::6815:1899Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3036::ac43:db48Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.24.153Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.219.72Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | hal.ns.cloudflare.com ⭐ | ||||||
| NS | megan.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.24.153, 172.67.219.72 | ||||||
| IPv6 hints | 2606:4700:3035::6815:1899, 2606:4700:3036::ac43:db48 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=80, name=cloudflare-ech.com | ||||||
| SOA | hal.ns.cloudflare.comdns@cloudflare.com serial=2417678987 | ||||||
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=1794565026 | ||||||
Same first word
study021.com |
Similar names
DNS History
14 records (6 active, 8 former)
○NSadelaide.ns.cloudflare.com2026-09-16 → 2026-09-16 · 4 obs
○ 2016-12-30 16:43:48
● 2026-09-16 13:22:14
○ 2026-11-10 09:13:14
○ 2026-11-13 11:02:44
● 2026-09-16 13:22:14
○ 2026-11-10 09:13:14
○ 2026-11-13 11:02:44
○NSdns10.hichina.com2016-12-30 → 2016-12-30 · 3 obs
● 2016-12-30 16:43:48
○ 2026-09-16 13:22:14
○ 2026-11-13 11:02:44
○ 2026-09-16 13:22:14
○ 2026-11-13 11:02:44
○NSdns9.hichina.com2016-12-30 → 2016-12-30 · 3 obs
● 2016-12-30 16:43:48
○ 2026-09-16 13:22:14
○ 2026-11-13 11:02:44
○ 2026-09-16 13:22:14
○ 2026-11-13 11:02:44
●NShal.ns.cloudflare.com2026-11-10 → 2026-11-13 · 3 obs
○ 2026-09-16 13:22:14
● 2026-11-10 09:13:14
● 2026-11-13 11:02:44
● 2026-11-10 09:13:14
● 2026-11-13 11:02:44
○NSmalcolm.ns.cloudflare.com2026-09-16 → 2026-09-16 · 4 obs
○ 2016-12-30 16:43:48
● 2026-09-16 13:22:14
○ 2026-11-10 09:13:14
○ 2026-11-13 11:02:44
● 2026-09-16 13:22:14
○ 2026-11-10 09:13:14
○ 2026-11-13 11:02:44
●NSmegan.ns.cloudflare.com2026-11-10 → 2026-11-13 · 3 obs
○ 2026-09-16 13:22:14
● 2026-11-10 09:13:14
● 2026-11-13 11:02:44
● 2026-11-10 09:13:14
● 2026-11-13 11:02:44
●A104.21.24.1532026-11-10 → 2026-11-13 · 3 obs
○ 2026-09-16 13:22:14
● 2026-11-10 09:13:14
● 2026-11-13 11:02:44
● 2026-11-10 09:13:14
● 2026-11-13 11:02:44
○A104.21.6.972026-09-16 → 2026-09-16 · 3 obs
● 2026-09-16 13:22:14
○ 2026-11-10 09:13:14
○ 2026-11-13 11:02:44
○ 2026-11-10 09:13:14
○ 2026-11-13 11:02:44
○A172.67.134.1712026-09-16 → 2026-09-16 · 3 obs
● 2026-09-16 13:22:14
○ 2026-11-10 09:13:14
○ 2026-11-13 11:02:44
○ 2026-11-10 09:13:14
○ 2026-11-13 11:02:44
●A172.67.219.722026-11-10 → 2026-11-13 · 3 obs
○ 2026-09-16 13:22:14
● 2026-11-10 09:13:14
● 2026-11-13 11:02:44
● 2026-11-10 09:13:14
● 2026-11-13 11:02:44
○A2606:4700:3031::ac43:86ab2026-09-16 → 2026-09-16 · 3 obs
● 2026-09-16 13:22:14
○ 2026-11-10 09:13:14
○ 2026-11-13 11:02:44
○ 2026-11-10 09:13:14
○ 2026-11-13 11:02:44
○A2606:4700:3032::6815:6612026-09-16 → 2026-09-16 · 3 obs
● 2026-09-16 13:22:14
○ 2026-11-10 09:13:14
○ 2026-11-13 11:02:44
○ 2026-11-10 09:13:14
○ 2026-11-13 11:02:44
●A2606:4700:3035::6815:18992026-11-10 → 2026-11-13 · 3 obs
○ 2026-09-16 13:22:14
● 2026-11-10 09:13:14
● 2026-11-13 11:02:44
● 2026-11-10 09:13:14
● 2026-11-13 11:02:44
●A2606:4700:3036::ac43:db482026-11-10 → 2026-11-13 · 3 obs
○ 2026-09-16 13:22:14
● 2026-11-10 09:13:14
● 2026-11-13 11:02:44
● 2026-11-10 09:13:14
● 2026-11-13 11:02:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| study021.com | hal.ns.cloudflare.com, megan.ns.cloudflare.com | 12 records |
✅ Authoritative Response
Server:173.245.59.174
NS records: hal.ns.cloudflare.com, megan.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for study021.com (unsigned zone)
⏱️ Timing
Total: 365ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.24.153, 172.67.219.72 |
| AAAA | 2 | 2606:4700:3036::ac43:db48, 2606:4700:3035::6815:1899 |
| NS | 2 | hal.ns.cloudflare.com, megan.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | hal.ns.cloudflare.com dns.cloudflare.com |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (hal.ns.cloudflare.com, hal.ns.cloudflare.com, hal.ns.cloudflare.com...)
Analysis
IP Addresses
study021.com directs to four IP numbers, which are 104.21.24.153, 172.67.219.72, 2606:4700:3035::6815:1899 and 2606:4700:3036::ac43:db48.
Name Servers
The NS records for study021.com delegate to hal.ns.cloudflare.com and megan.ns.cloudflare.com.