hackfirst.io - dns.ninja
hackfirst.io
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3030::6815:883Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3034::ac43:bc74Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.8.131Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.188.116Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | raphaela.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:50::a29f:26c0🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | raphaela.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c2c0🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | raphaela.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:22c0🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | raphaela.ns.cloudflare.com | ||||||
| A | 108.162.194.192🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | raphaela.ns.cloudflare.com | ||||||
| A | 162.159.38.192Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | raphaela.ns.cloudflare.com | ||||||
| A | 172.64.34.192🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | raphaela.ns.cloudflare.com | ||||||
| NS | shane.ns.cloudflare.com | ||||||
| MX | mail.hackfirst.io ⭐ | ||||||
| TXT | mailru-domain: cSIOXlDdnAbP9eAr | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.8.131, 172.67.188.116 | ||||||
| IPv6 hints | 2606:4700:3030::6815:883, 2606:4700:3034::ac43:bc74 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=17, name=cloudflare-ech.com | ||||||
| SOA | raphaela.ns.cloudflare.comdns@cloudflare.com serial=2416020385 | ||||||
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=1793625640 | ||||||
Subdomains
mail.hackfirst.io |
Same first word
hackfirst.io |
hackfirst.com |
hackfirst.xyz |
Similar names
DNS History
7 records (7 active, 0 former)
●NSraphaela.ns.cloudflare.com2026-09-03 → 2026-11-02 · 2 obs
● 2026-09-03 19:59:48
● 2026-11-02 13:47:06
● 2026-11-02 13:47:06
●NSshane.ns.cloudflare.com2026-09-03 → 2026-11-02 · 2 obs
● 2026-09-03 19:59:48
● 2026-11-02 13:47:06
● 2026-11-02 13:47:06
●MXmail.hackfirst.io2026-09-03 → 2026-11-02 · 2 obs
● 2026-09-03 19:59:48
● 2026-11-02 13:47:06
● 2026-11-02 13:47:06
●A104.21.8.1312026-09-03 → 2026-11-02 · 2 obs
● 2026-09-03 19:59:48
● 2026-11-02 13:47:06
● 2026-11-02 13:47:06
●A172.67.188.1162026-09-03 → 2026-11-02 · 2 obs
● 2026-09-03 19:59:48
● 2026-11-02 13:47:06
● 2026-11-02 13:47:06
●A2606:4700:3030::6815:8832026-09-03 → 2026-11-02 · 2 obs
● 2026-09-03 19:59:48
● 2026-11-02 13:47:06
● 2026-11-02 13:47:06
●A2606:4700:3034::ac43:bc742026-09-03 → 2026-11-02 · 2 obs
● 2026-09-03 19:59:48
● 2026-11-02 13:47:06
● 2026-11-02 13:47:06
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| io | c0.nic.io, a2.nic.io, a0.nic.io, b0.nic.io | - |
| hackfirst.io | shane.ns.cloudflare.com, raphaela.ns.cloudflare.com | - |
✅ Authoritative Response
Server:162.159.44.57
NS records: shane.ns.cloudflare.com, raphaela.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: 410ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.8.131, 172.67.188.116 |
| AAAA | 2 | 2606:4700:3030::6815:883, 2606:4700:3034::ac43:bc74 |
| NS | 2 | raphaela.ns.cloudflare.com, shane.ns.cloudflare.com |
| MX | 1 | mail.hackfirst.io (pri: 10) |
| TXT | 1 | mailru-domain: cSIOXlDdnAbP9eAr |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | raphaela.ns.cloudflare.com dns.cloudflar |
Analysis
Hierarchy
hackfirst.io is the parent zone for mail.hackfirst.io.
IP Addresses
hackfirst.io has four IP addresses: 104.21.8.131, 172.67.188.116, 2606:4700:3030::6815:883 and 2606:4700:3034::ac43:bc74.
Name Servers
DNS delegation for hackfirst.io points to two name servers: raphaela.ns.cloudflare.com and shane.ns.cloudflare.com.
Hosts with 6 IP addresses each:
raphaela.ns.cloudflare.com has IP addresses 108.162.194.192, 162.159.38.192 and 172.64.34.192, plus 3 other.