www.kellerphysics.com - robtex.com

www.kellerphysics.com

DNSSEC⚠️ Not signed
A2606:4700:3030::6815:917🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3032::ac43:8d12🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.9.23Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.141.18🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.9.23, 172.67.141.18
IPv6 hints2606:4700:3030::6815:917, 2606:4700:3032::ac43:8d12
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=244, name=cloudflare-ech.com

kellerphysics.com

DNSSEC⚠️ Not signed
A2606:4700:3030::6815:917🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3032::ac43:8d12🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.9.23Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.141.18🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSisaac.ns.cloudflare.com ⭐
NSursula.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.9.23, 172.67.141.18
IPv6 hints2606:4700:3030::6815:917, 2606:4700:3032::ac43:8d12
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=244, name=cloudflare-ech.com
SOAisaac.ns.cloudflare.comdns@cloudflare.com serial=2399453984

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DNS History

9 records (4 active, 5 former)

20192020202120222023202420252026A104.21.9.23172.67.141.182606:4700:3030::6815:9172606:4700:3032::ac43:8d12188.114.96.0188.114.97.0206.188.192.2092a06:98c1:3120::2a06:98c1:3121::
●A104.21.9.232026-02-17 → 2026-04-26 · 6 obs
○ 2018-05-11 00:28:50
● 2026-02-17 03:11:48
● 2026-03-21 11:59:50
○ 2026-03-23 22:14:14
● 2026-03-29 19:24:50
● 2026-04-26 13:54:06
●A172.67.141.182026-02-17 → 2026-04-26 · 6 obs
○ 2018-05-11 00:28:50
● 2026-02-17 03:11:48
● 2026-03-21 11:59:50
○ 2026-03-23 22:14:14
● 2026-03-29 19:24:50
● 2026-04-26 13:54:06
○A188.114.96.02026-03-23 → 2026-03-23 · 4 obs
○ 2026-03-21 11:59:50
● 2026-03-23 22:14:14
○ 2026-03-29 19:24:50
○ 2026-04-26 13:54:06
○A188.114.97.02026-03-23 → 2026-03-23 · 4 obs
○ 2026-03-21 11:59:50
● 2026-03-23 22:14:14
○ 2026-03-29 19:24:50
○ 2026-04-26 13:54:06
○A206.188.192.2092018-05-11 → 2018-05-11 · 3 obs
● 2018-05-11 00:28:50
○ 2026-02-17 03:11:48
○ 2026-04-26 13:54:06
●A2606:4700:3030::6815:9172026-02-17 → 2026-04-26 · 6 obs
○ 2018-05-11 00:28:50
● 2026-02-17 03:11:48
● 2026-03-21 11:59:50
○ 2026-03-23 22:14:14
● 2026-03-29 19:24:50
● 2026-04-26 13:54:06
●A2606:4700:3032::ac43:8d122026-02-17 → 2026-04-26 · 6 obs
○ 2018-05-11 00:28:50
● 2026-02-17 03:11:48
● 2026-03-21 11:59:50
○ 2026-03-23 22:14:14
● 2026-03-29 19:24:50
● 2026-04-26 13:54:06
○A2a06:98c1:3120::2026-03-23 → 2026-03-23 · 4 obs
○ 2026-03-21 11:59:50
● 2026-03-23 22:14:14
○ 2026-03-29 19:24:50
○ 2026-04-26 13:54:06
○A2a06:98c1:3121::2026-03-23 → 2026-03-23 · 4 obs
○ 2026-03-21 11:59:50
● 2026-03-23 22:14:14
○ 2026-03-29 19:24:50
○ 2026-04-26 13:54:06

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comg.gtld-servers.net, i.gtld-servers.net, a.gtld-servers.net, c.gtld-servers.net...-
kellerphysics.comisaac.ns.cloudflare.com, ursula.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.193.177

NS records: isaac.ns.cloudflare.com, ursula.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for kellerphysics.com (unsigned zone)

⏱️ Timing

Total: 280ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.9.23, 172.67.141.18
AAAA22606:4700:3032::ac43:8d12, 2606:4700:3030::6815:917
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (isaac.ns.cloudflare.com, isaac.ns.cloudflare.com, isaac.ns.cloudflare.com...)

Analysis

IP Addresses

Four IP numbers are pointed to by www.kellerphysics.com: 2606:4700:3030::6815:917, 2606:4700:3032::ac43:8d12, 104.21.9.23 and 172.67.141.18.

other host names including ribbonsplus.coffeecup.com, advancesenioroptions.com, cshuida.net, cretainox.gr and wpokulu.com share IP numbers with www.kellerphysics.com.