mailserver.jfw4.com - robtex.com
mailserver.jfw4.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3030::6815:330🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3037::ac43:823e🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.3.48Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.130.62🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 | 104.21.3.48, 172.67.130.62 | ||||||
| IPv6 | 2606:4700:3030::6815:330, 2606:4700:3037::ac43:823e | ||||||
jfw4.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3030::6815:330🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3037::ac43:823e🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.3.48Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.130.62🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | coco.ns.cloudflare.com ⭐ | ||||||
| NS | vin.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 | 104.21.3.48, 172.67.130.62 | ||||||
| IPv6 | 2606:4700:3030::6815:330, 2606:4700:3037::ac43:823e | ||||||
| SOA | coco.ns.cloudflare.comdns@cloudflare.com serial=2397969663 | ||||||
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●A104.21.3.482026-03-16 → 2026-03-25 · 2 obs
● 2026-03-16 01:08:10
● 2026-03-25 06:49:12
● 2026-03-25 06:49:12
●A172.67.130.622026-03-16 → 2026-03-25 · 2 obs
● 2026-03-16 01:08:10
● 2026-03-25 06:49:12
● 2026-03-25 06:49:12
●A2606:4700:3030::6815:3302026-03-16 → 2026-03-25 · 2 obs
● 2026-03-16 01:08:10
● 2026-03-25 06:49:12
● 2026-03-25 06:49:12
●A2606:4700:3037::ac43:823e2026-03-16 → 2026-03-25 · 2 obs
● 2026-03-16 01:08:10
● 2026-03-25 06:49:12
● 2026-03-25 06:49:12
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | f.gtld-servers.net, j.gtld-servers.net, d.gtld-servers.net, a.gtld-servers.net... | - |
| jfw4.com | coco.ns.cloudflare.com, vin.ns.cloudflare.com | 12 records |
✅ Authoritative Response
Server:108.162.192.104
NS records: coco.ns.cloudflare.com, vin.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for jfw4.com (unsigned zone)
⏱️ Timing
Total: 154ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.3.48, 172.67.130.62 |
| AAAA | 2 | 2606:4700:3037::ac43:823e, 2606:4700:3030::6815:330 |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (coco.ns.cloudflare.com, coco.ns.cloudflare.com, coco.ns.cloudflare.com...)
Analysis
IP Addresses
mailserver.jfw4.com maps to four IP numbers: 2606:4700:3030::6815:330, 2606:4700:3037::ac43:823e, 104.21.3.48 and 172.67.130.62.
Other host names such as nkkei.com, adsfgsda.wgrochy.pl, beforce.com.tw, dignityhealth.us and www.trucaretrust.com.cdn.cloudflare.net share IPs with mailserver.jfw4.com.