dev.edtec.tokyo - robtex.com
dev.edtec.tokyo
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3036::6815:f8e🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3036::ac43:a2c6🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.15.142Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.162.198🇺🇸 Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.15.142, 172.67.162.198 | ||||||
| IPv6 hints | 2606:4700:3036::6815:f8e, 2606:4700:3036::ac43:a2c6 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=123, name=cloudflare-ech.com | ||||||
edtec.tokyo
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2401:2500:102:1116:133:242:191:115🇯🇵 SAKURA-A2401:2500::/32 (ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan | ||||||
| A | 133.242.191.115🇯🇵 SAKURA-A133.242.0.0/16 (1/ISHIKARI) SAKURA Internet // HOKKAIDO BACKBONE 1-8-14 Minami-Honmachi, Chuo-ku, Osaka 541-0054, Japan | ||||||
| NS | ian.ns.cloudflare.com ⭐ | ||||||
| NS | rosalyn.ns.cloudflare.com | ||||||
| MX | mail.edtec.tokyo ⭐ | ||||||
| TXT | v=spf1 a:edtec.tokyo a:mail.edtec.tokyo a:www3120.sakura.ne.jp include:_spf.... | ||||||
| SOA | ian.ns.cloudflare.comdns@cloudflare.com serial=2410830525 | ||||||
PTR for
3.2.2.0.2.5.1.0.2.4.2.0.3.3.1.0.7.0.1.1.2.0.1.0.0.0.5.2.1.0.4.2.ip6.arpa |
223.152.242.133.in-addr.arpa |
Same first word
Similar names
DNS History
6 records (4 active, 2 former)
●A104.21.15.1422026-07-12 → 2026-08-02 · 3 obs
○ 2026-02-15 05:21:14
● 2026-07-12 02:38:44
● 2026-08-02 18:58:10
● 2026-07-12 02:38:44
● 2026-08-02 18:58:10
○A133.242.152.2232026-02-15 → 2026-02-15 · 3 obs
● 2026-02-15 05:21:14
○ 2026-07-12 02:38:44
○ 2026-08-02 18:58:10
○ 2026-07-12 02:38:44
○ 2026-08-02 18:58:10
●A172.67.162.1982026-07-12 → 2026-08-02 · 3 obs
○ 2026-02-15 05:21:14
● 2026-07-12 02:38:44
● 2026-08-02 18:58:10
● 2026-07-12 02:38:44
● 2026-08-02 18:58:10
○A2401:2500:102:1107:133:242:152:2232026-02-15 → 2026-02-15 · 3 obs
● 2026-02-15 05:21:14
○ 2026-07-12 02:38:44
○ 2026-08-02 18:58:10
○ 2026-07-12 02:38:44
○ 2026-08-02 18:58:10
●A2606:4700:3036::6815:f8e2026-07-12 → 2026-08-02 · 3 obs
○ 2026-02-15 05:21:14
● 2026-07-12 02:38:44
● 2026-08-02 18:58:10
● 2026-07-12 02:38:44
● 2026-08-02 18:58:10
●A2606:4700:3036::ac43:a2c62026-07-12 → 2026-08-02 · 3 obs
○ 2026-02-15 05:21:14
● 2026-07-12 02:38:44
● 2026-08-02 18:58:10
● 2026-07-12 02:38:44
● 2026-08-02 18:58:10
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| tokyo | a.gmoregistry.net, b.gmoregistry.net, k.gmoregistry.net, l.gmoregistry.net | 7 records |
| edtec.tokyo | rosalyn.ns.cloudflare.com, ian.ns.cloudflare.com | - |
✅ Authoritative Response
Server:108.162.194.59
NS records: rosalyn.ns.cloudflare.com, ian.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for edtec.tokyo (unsigned zone)
⏱️ Timing
Total: 369ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.162.198, 104.21.15.142 |
| AAAA | 2 | 2606:4700:3036::6815:f8e, 2606:4700:3036::ac43:a2c6 |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
📌 Glue Records Collected
Total: 7
Out-of-bailiwick: 7 (a.gmoregistry.net, a.gmoregistry.net, b.gmoregistry.net...)
Analysis
IP Addresses
dev.edtec.tokyo points to the four IP addresses 104.21.15.142, 172.67.162.198, 2606:4700:3036::6815:f8e and 2606:4700:3036::ac43:a2c6.
Additional host names — lightvm.net, www.conzept-bad.de, chatgptbot.frnks.workers.dev and two others — share IP numbers with dev.edtec.tokyo.