hostmaster.biu.net - robtex.com

hostmaster.biu.net

DNSSEC⚠️ Not signed
A2606:4700:3033::6815:3d1c🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3033::ac43:cd65🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.61.28Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.205.101🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.61.28, 172.67.205.101
IPv6 hints2606:4700:3033::6815:3d1c, 2606:4700:3033::ac43:cd65
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=212, name=cloudflare-ech.com

biu.net

DNSSEC⚠️ Not signed
A2606:4700:3033::6815:3d1c🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3033::ac43:cd65🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.61.28Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.205.101🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NShassan.ns.cloudflare.com ⭐
NStara.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.61.28, 172.67.205.101
IPv6 hints2606:4700:3033::6815:3d1c, 2606:4700:3033::ac43:cd65
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=212, name=cloudflare-ech.com
SOAhassan.ns.cloudflare.comdns@cloudflare.com serial=2410703980

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DNS History

11 records (4 active, 7 former)

20162017201820192020202120222023202420252026NSns100.rookdns.comns99.rookdns.comMXmail.mxproc.comA104.21.61.28172.67.205.1012606:4700:3033::6815:3d1c2606:4700:3033::ac43:cd65141.8.224.2392606:4700:3036::6815:3d1c2606:4700:3036::ac43:cd6564.250.113.90
○NSns100.rookdns.com2015-06-07 → 2015-11-04 · 4 obs
● 2015-06-07 03:38:10
● 2015-11-04 16:18:38
○ 2016-01-19 19:23:54
○ 2026-08-01 19:45:02
○NSns99.rookdns.com2015-06-07 → 2015-11-04 · 4 obs
● 2015-06-07 03:38:10
● 2015-11-04 16:18:38
○ 2016-01-19 19:23:54
○ 2026-08-01 19:45:02
○MXmail.mxproc.com2015-06-07 → 2015-06-07 · 3 obs
● 2015-06-07 03:38:10
○ 2016-01-19 19:23:54
○ 2026-08-01 19:45:02
●A104.21.61.282026-04-09 → 2026-08-01 · 3 obs
○ 2016-01-19 19:23:54
● 2026-04-09 21:46:48
● 2026-08-01 19:45:02
○A141.8.224.2392015-06-07 → 2015-06-07 · 3 obs
● 2015-06-07 03:38:10
○ 2015-11-04 16:18:38
○ 2026-08-01 19:45:02
●A172.67.205.1012026-04-09 → 2026-08-01 · 3 obs
○ 2016-01-19 19:23:54
● 2026-04-09 21:46:48
● 2026-08-01 19:45:02
●A2606:4700:3033::6815:3d1c2026-07-09 → 2026-08-01 · 3 obs
○ 2026-04-09 21:46:48
● 2026-07-09 20:18:20
● 2026-08-01 19:45:02
●A2606:4700:3033::ac43:cd652026-07-09 → 2026-08-01 · 3 obs
○ 2026-04-09 21:46:48
● 2026-07-09 20:18:20
● 2026-08-01 19:45:02
○A2606:4700:3036::6815:3d1c2026-04-09 → 2026-04-09 · 4 obs
○ 2016-01-19 19:23:54
● 2026-04-09 21:46:48
○ 2026-07-09 20:18:20
○ 2026-08-01 19:45:02
○A2606:4700:3036::ac43:cd652026-04-09 → 2026-04-09 · 4 obs
○ 2016-01-19 19:23:54
● 2026-04-09 21:46:48
○ 2026-07-09 20:18:20
○ 2026-08-01 19:45:02
○A64.250.113.902015-11-04 → 2015-11-04 · 4 obs
○ 2015-06-07 03:38:10
● 2015-11-04 16:18:38
○ 2016-01-19 19:23:54
○ 2026-08-01 19:45:02

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
netb.gtld-servers.net, j.gtld-servers.net, g.gtld-servers.net, c.gtld-servers.net...-
biu.nettara.ns.cloudflare.com, hassan.ns.cloudflare.com-

✅ Authoritative Response

Server:162.159.44.149

NS records: tara.ns.cloudflare.com, hassan.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for biu.net (unsigned zone)

⏱️ Timing

Total: 406ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.61.28, 172.67.205.101
AAAA22606:4700:3033::6815:3d1c, 2606:4700:3033::ac43:cd65
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

hostmaster.biu.net directs to four IP numbers, which are 104.21.61.28, 172.67.205.101, 2606:4700:3033::6815:3d1c and 2606:4700:3033::ac43:cd65.

directmarketinglabs.com, real-estate-agent-new-han10611.blogsmine.com, abc3.com and two other host names share IP numbers with hostmaster.biu.net.