cf.rbtree.workers.dev - robtex.com
cf.rbtree.workers.dev
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3035::6815:36b3Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3035::ac43:a8c9Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.54.179Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.168.201Cloudflare172.67.160.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.54.179, 172.67.168.201 | ||||||
| IPv6 hints | 2606:4700:3035::6815:36b3, 2606:4700:3035::ac43:a8c9 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=21, name=cloudflare-ech.com | ||||||
rbtree.workers.dev
| DNSSEC | ⚠️ Not signed | ||||||
| NS | lewis.ns.cloudflare.com ⭐ | ||||||
| NS | ziggy.ns.cloudflare.com | ||||||
| SOA | lewis.ns.cloudflare.comdns@cloudflare.com serial=2409542516 | ||||||
DNS History
4 records (4 active, 0 former)
●A104.21.54.1792026-10-04 → 2026-10-18 · 2 obs
● 2026-10-04 21:53:38
● 2026-10-18 09:59:04
● 2026-10-18 09:59:04
●A172.67.168.2012026-10-04 → 2026-10-18 · 2 obs
● 2026-10-04 21:53:38
● 2026-10-18 09:59:04
● 2026-10-18 09:59:04
●A2606:4700:3035::6815:36b32026-10-04 → 2026-10-18 · 2 obs
● 2026-10-04 21:53:38
● 2026-10-18 09:59:04
● 2026-10-18 09:59:04
●A2606:4700:3035::ac43:a8c92026-10-04 → 2026-10-18 · 2 obs
● 2026-10-04 21:53:38
● 2026-10-18 09:59:04
● 2026-10-18 09:59:04
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| dev | ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com... | 10 records |
| workers.dev | clyde.ns.cloudflare.com, sofia.ns.cloudflare.com | - |
| rbtree.workers.dev | lewis.ns.cloudflare.com, ziggy.ns.cloudflare.com | - |
✅ Authoritative Response
Server:108.162.194.237
NS records: lewis.ns.cloudflare.com, ziggy.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
Root DNSKEY fetch failed: Error: connect EADDRNOTAVAIL 198.41.0.4:53 - Local (0.0.0.0:0)
⏱️ Timing
Total: 1104ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.168.201, 104.21.54.179 |
| AAAA | 2 | 2606:4700:3035::ac43:a8c9, 2606:4700:3035::6815:36b3 |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
📌 Glue Records Collected
Total: 10
Out-of-bailiwick: 10 (ns-tld1.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com...)
Analysis
IP Addresses
cf.rbtree.workers.dev points to the four IP addresses 104.21.54.179, 172.67.168.201, 2606:4700:3035::6815:36b3 and 2606:4700:3035::ac43:a8c9.