www.kalkulation.info - robtex.com

www.kalkulation.info

DNSSEC⚠️ Not signed
A2606:4700:3031::ac43:b536🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::6815:2849🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.40.73Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.181.54🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.40.73, 172.67.181.54
IPv6 hints2606:4700:3031::ac43:b536, 2606:4700:3034::6815:2849
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=248, name=cloudflare-ech.com

kalkulation.info

DNSSEC⚠️ Not signed
A2606:4700:3031::ac43:b536🇺🇸 Cloudflare2606:4700:3031::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::6815:2849🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.40.73Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.181.54🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSgwen.ns.cloudflare.com ⭐
NSsterling.ns.cloudflare.com
MX_dc-mx.ef7ac3c0f38d.kalkulation.info ⭐
TXTv=spf1 a mx ip4:157.250.197.42 include:relay.mailbaby.net ~all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.40.73, 172.67.181.54
IPv6 hints2606:4700:3031::ac43:b536, 2606:4700:3034::6815:2849
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=248, name=cloudflare-ech.com
SOAgwen.ns.cloudflare.comdns@cloudflare.com serial=2409766754
⚠️ On DNS blocklist: tif

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DNS History

11 records (4 active, 7 former)

A104.21.40.73172.67.181.542606:4700:3031::ac43:b5362606:4700:3034::6815:2849188.114.96.0188.114.97.02606:4700:3032::ac43:b5362606:4700:3037::6815:28492a06:98c1:3120::2a06:98c1:3121::66.45.230.82
●A104.21.40.732026-05-23 → 2026-08-08 · 6 obs
○ 2026-05-07 13:20:00
● 2026-05-23 02:02:14
● 2026-06-13 21:49:54
○ 2026-06-17 17:49:40
● 2026-07-24 00:32:28
● 2026-08-08 16:18:32
●A172.67.181.542026-05-23 → 2026-08-08 · 6 obs
○ 2026-05-07 13:20:00
● 2026-05-23 02:02:14
● 2026-06-13 21:49:54
○ 2026-06-17 17:49:40
● 2026-07-24 00:32:28
● 2026-08-08 16:18:32
○A188.114.96.02026-06-17 → 2026-06-17 · 4 obs
○ 2026-06-13 21:49:54
● 2026-06-17 17:49:40
○ 2026-07-24 00:32:28
○ 2026-08-08 16:18:32
○A188.114.97.02026-06-17 → 2026-06-17 · 4 obs
○ 2026-06-13 21:49:54
● 2026-06-17 17:49:40
○ 2026-07-24 00:32:28
○ 2026-08-08 16:18:32
●A2606:4700:3031::ac43:b5362026-07-24 → 2026-08-08 · 3 obs
○ 2026-06-17 17:49:40
● 2026-07-24 00:32:28
● 2026-08-08 16:18:32
○A2606:4700:3032::ac43:b5362026-05-23 → 2026-06-13 · 5 obs
○ 2026-05-07 13:20:00
● 2026-05-23 02:02:14
● 2026-06-13 21:49:54
○ 2026-06-17 17:49:40
○ 2026-08-08 16:18:32
●A2606:4700:3034::6815:28492026-07-24 → 2026-08-08 · 3 obs
○ 2026-06-17 17:49:40
● 2026-07-24 00:32:28
● 2026-08-08 16:18:32
○A2606:4700:3037::6815:28492026-05-23 → 2026-06-13 · 5 obs
○ 2026-05-07 13:20:00
● 2026-05-23 02:02:14
● 2026-06-13 21:49:54
○ 2026-06-17 17:49:40
○ 2026-08-08 16:18:32
○A2a06:98c1:3120::2026-06-17 → 2026-06-17 · 4 obs
○ 2026-06-13 21:49:54
● 2026-06-17 17:49:40
○ 2026-07-24 00:32:28
○ 2026-08-08 16:18:32
○A2a06:98c1:3121::2026-06-17 → 2026-06-17 · 4 obs
○ 2026-06-13 21:49:54
● 2026-06-17 17:49:40
○ 2026-07-24 00:32:28
○ 2026-08-08 16:18:32
○A66.45.230.822026-05-07 → 2026-05-07 · 3 obs
● 2026-05-07 13:20:00
○ 2026-05-23 02:02:14
○ 2026-08-08 16:18:32

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
infoa0.info.afilias-nst.info, a2.info.afilias-nst.info, c0.info.afilias-nst.info-
kalkulation.infogwen.ns.cloudflare.com, sterling.ns.cloudflare.com-

✅ Authoritative Response

Server:173.245.58.160

NS records: gwen.ns.cloudflare.com, sterling.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for kalkulation.info (unsigned zone)

⏱️ Timing

Total: 381ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.40.73, 172.67.181.54
AAAA22606:4700:3031::ac43:b536, 2606:4700:3034::6815:2849
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

www.kalkulation.info directs to four IP numbers, which are 104.21.40.73, 172.67.181.54, 2606:4700:3031::ac43:b536 and 2606:4700:3034::6815:2849.

Among the host names that share IP numbers with www.kalkulation.info are www.imgsc.com, digisyria.com, www.afdincid.click and two others.