www.cpu.lu - robtex.com

www.cpu.lu

DNSSEC⚠️ Not signed
A2606:4700:3035::6815:1cb0🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:92f0🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.28.176Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.146.240🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.28.176, 172.67.146.240
IPv6 hints2606:4700:3035::6815:1cb0, 2606:4700:3037::ac43:92f0
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=136, name=cloudflare-ech.com

cpu.lu

DNSSEC⚠️ Not signed
A2606:4700:3035::6815:1cb0🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:92f0🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.28.176Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.146.240🇺🇸 Cloudflare172.67.144.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSrita.ns.cloudflare.com ⭐
NSwoz.ns.cloudflare.com
MXedgar.cpu.lu ⭐
TXTgoogle-site-verification=bhwrMc9svF--u4dVOljrkPeHwWI-_S7pEayeFx47D5k
TXTv=spf1 mx -all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.28.176, 172.67.146.240
IPv6 hints2606:4700:3035::6815:1cb0, 2606:4700:3037::ac43:92f0
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=136, name=cloudflare-ech.com
SOArita.ns.cloudflare.comdns@cloudflare.com serial=2399107174
WOT: SAFE (67/100)
WOT: SAFE (67/100)

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DNS History

10 records (4 active, 6 former)

20162017201820192020202120222023202420252026A104.21.28.176172.67.146.2402606:4700:3035::6815:1cb02606:4700:3037::ac43:92f0188.114.96.0188.114.97.02001:41d0:8:1915:e::22a06:98c1:3120::2a06:98c1:3121::5.135.126.161
●A104.21.28.1762026-04-03 → 2026-04-03 · 3 obs
○ 2018-10-07 14:34:36
● 2026-04-03 06:19:14
● 2026-04-03 06:19:16
●A172.67.146.2402026-04-03 → 2026-04-03 · 3 obs
○ 2018-10-07 14:34:36
● 2026-04-03 06:19:14
● 2026-04-03 06:19:16
○A188.114.96.02026-04-03 → 2026-04-03 · 2 obs
○ 2026-04-03 06:19:14
○ 2026-04-03 06:19:16
○A188.114.97.02026-04-03 → 2026-04-03 · 2 obs
○ 2026-04-03 06:19:14
○ 2026-04-03 06:19:16
○A2001:41d0:8:1915:e::22015-08-26 → 2018-10-07 · 4 obs
● 2015-08-26 07:06:48
● 2018-10-07 14:34:36
○ 2026-04-03 06:19:14
○ 2026-04-03 06:19:16
●A2606:4700:3035::6815:1cb02026-04-03 → 2026-04-03 · 3 obs
○ 2018-10-07 14:34:36
● 2026-04-03 06:19:14
● 2026-04-03 06:19:16
●A2606:4700:3037::ac43:92f02026-04-03 → 2026-04-03 · 3 obs
○ 2018-10-07 14:34:36
● 2026-04-03 06:19:14
● 2026-04-03 06:19:16
○A2a06:98c1:3120::2026-04-03 → 2026-04-03 · 2 obs
○ 2026-04-03 06:19:14
○ 2026-04-03 06:19:16
○A2a06:98c1:3121::2026-04-03 → 2026-04-03 · 2 obs
○ 2026-04-03 06:19:14
○ 2026-04-03 06:19:16
○A5.135.126.1612015-08-26 → 2018-10-07 · 4 obs
● 2015-08-26 07:06:48
● 2018-10-07 14:34:36
○ 2026-04-03 06:19:14
○ 2026-04-03 06:19:16

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
lug.dns.lu, i.dns.lu, j.dns.lu, k.dns.lu...12 records
cpu.lurita.ns.cloudflare.com, woz.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.32.140

NS records: rita.ns.cloudflare.com, woz.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for cpu.lu (unsigned zone)

⏱️ Timing

Total: 1202ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.28.176, 172.67.146.240
AAAA22606:4700:3035::6815:1cb0, 2606:4700:3037::ac43:92f0
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

In-bailiwick: 12 (g.dns.lu, i.dns.lu, j.dns.lu...)

Analysis

IP Addresses

www.cpu.lu resolves to four IPs: 2606:4700:3035::6815:1cb0, 2606:4700:3037::ac43:92f0, 104.21.28.176 and 172.67.146.240.

Other host names, for instance meagile.com, companydatabase.com, decho.xyz, sublimerge.com and cleaningservice.co.il share IP numbers with www.cpu.lu.