dufftech.net - robtex.com
dufftech.net
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3031::6815:1cf1🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3037::ac43:93e7🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.28.241Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.147.231🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| NS | guss.ns.cloudflare.com ⭐ | ||||||
| A | 2606:4700:58::adf5:3bac🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | guss.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c1ac🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | guss.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:21ac🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | guss.ns.cloudflare.com | ||||||
| A | 108.162.193.172🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | guss.ns.cloudflare.com | ||||||
| A | 172.64.33.172🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | guss.ns.cloudflare.com | ||||||
| A | 173.245.59.172🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | guss.ns.cloudflare.com | ||||||
| NS | irena.ns.cloudflare.com | ||||||
| A | 2606:4700:50::a29f:264f🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | irena.ns.cloudflare.com | ||||||
| A | 2803:f800:50::6ca2:c24f🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L | ||||||
| PTR | irena.ns.cloudflare.com | ||||||
| A | 2a06:98c1:50::ac40:224f🇺🇸 Cloudflare2a06:98c1:50::/45 | ||||||
| PTR | irena.ns.cloudflare.com | ||||||
| A | 108.162.194.79🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | irena.ns.cloudflare.com | ||||||
| A | 162.159.38.79Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | irena.ns.cloudflare.com | ||||||
| A | 172.64.34.79🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US | ||||||
| PTR | irena.ns.cloudflare.com | ||||||
| HTTPS | HTTP/3, HTTP/2 ✓ hints match | ||||||
| IPv4 hints | 104.21.28.241, 172.67.147.231 | ||||||
| IPv6 hints | 2606:4700:3031::6815:1cf1, 2606:4700:3037::ac43:93e7 | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=159, name=cloudflare-ech.com | ||||||
| SOA | guss.ns.cloudflare.comdns@cloudflare.com serial=2402415009 | ||||||
net
| 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=1778377442 | ||||||
Same first word
DNS History
10 records (6 active, 4 former)
●NSguss.ns.cloudflare.com2026-04-22 → 2026-05-10 · 2 obs
● 2026-05-10 01:59:44
●NSirena.ns.cloudflare.com2026-04-22 → 2026-05-10 · 2 obs
● 2026-05-10 01:59:44
●A104.21.28.2412026-04-22 → 2026-05-10 · 2 obs
● 2026-05-10 01:59:44
●A172.67.147.2312026-04-22 → 2026-05-10 · 2 obs
● 2026-05-10 01:59:44
○A188.114.96.02026-04-22 → 2026-05-10 · 2 obs
○ 2026-05-10 01:59:44
○A188.114.97.02026-04-22 → 2026-05-10 · 2 obs
○ 2026-05-10 01:59:44
●A2606:4700:3031::6815:1cf12026-04-22 → 2026-05-10 · 2 obs
● 2026-05-10 01:59:44
●A2606:4700:3037::ac43:93e72026-04-22 → 2026-05-10 · 2 obs
● 2026-05-10 01:59:44
○A2a06:98c1:3120::2026-04-22 → 2026-05-10 · 2 obs
○ 2026-05-10 01:59:44
○A2a06:98c1:3121::2026-04-22 → 2026-05-10 · 2 obs
○ 2026-05-10 01:59:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| net | e.gtld-servers.net, c.gtld-servers.net, h.gtld-servers.net, k.gtld-servers.net... | - |
| dufftech.net | guss.ns.cloudflare.com, irena.ns.cloudflare.com | - |
✅ Authoritative Response
Server:108.162.194.79
NS records: guss.ns.cloudflare.com, irena.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for dufftech.net (unsigned zone)
⏱️ Timing
Total: 330ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 172.67.147.231, 104.21.28.241 |
| AAAA | 2 | 2606:4700:3037::ac43:93e7, 2606:4700:3031::6815:1cf1 |
| NS | 2 | guss.ns.cloudflare.com, irena.ns.cloudflare.com |
| HTTPS | 1 | {"priority":1,"target":".","alpn":["h3", |
| SOA | 1 | guss.ns.cloudflare.com dns.cloudflare.co |
Analysis
IP Addresses
dufftech.net resolves to four IP numbers: 2606:4700:3031::6815:1cf1, 2606:4700:3037::ac43:93e7, 104.21.28.241 and 172.67.147.231.
Other host names such as www.ritop.net, mycrsinc.com, daqinyimai.com, sml.sg and mail.bikehit.de share IPs with dufftech.net.
Name Servers
dufftech.net is delegated to two name servers: guss.ns.cloudflare.com and irena.ns.cloudflare.com.
dufftech.net shares the same name server setup as edu.pink, besttorontoclean.com, (0x7868616d73746572)-gay.yachts, globaltranslations.org and koivunen.me.
dufftech.net at least partially shares name servers with other domains, for instance dingjulighting.com, andrewconnell.net, lofskolen.dk, inexpro-group.nl and vetzenvps.com.
these name servers are commonly used with monroe.ns.cloudflare.com, emerie.ns.cloudflare.com, curt.ns.cloudflare.com and henry.ns.cloudflare.com.
Host names with six IP numbers:
guss.ns.cloudflare.com points to 2606:4700:58::adf5:3bac, 2803:f800:50::6ca2:c1ac, 2a06:98c1:50::ac40:21ac, 108.162.193.172, 172.64.33.172 and 173.245.59.172.
irena.ns.cloudflare.com points to 2606:4700:50::a29f:264f, 2803:f800:50::6ca2:c24f, 2a06:98c1:50::ac40:224f, 108.162.194.79, 162.159.38.79 and 172.64.34.79.