mail.rikens.com - robtex.com

mail.rikens.com

DNSSEC⚠️ Not signed
A2606:4700:3030::ac43:d45c🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::6815:17ab🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.23.171Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.212.92🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.23.171, 172.67.212.92
IPv6 hints2606:4700:3030::ac43:d45c, 2606:4700:3036::6815:17ab
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=51, name=cloudflare-ech.com

rikens.com

DNSSEC⚠️ Not signed
A2606:4700:3030::ac43:d45c🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3036::6815:17ab🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.23.171Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.212.92🇺🇸 Cloudflare172.67.208.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSgarret.ns.cloudflare.com ⭐
NShadlee.ns.cloudflare.com
MX_dc-mx.5d4589973c29.rikens.com ⭐
TXTv=spf1 +a +mx +a:vmi3257384.contaboserver.net -all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.23.171, 172.67.212.92
IPv6 hints2606:4700:3030::ac43:d45c, 2606:4700:3036::6815:17ab
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=51, name=cloudflare-ech.com
SOAgarret.ns.cloudflare.comdns@cloudflare.com serial=2410151289

Previously MX for

rikens.com

Same first word

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DNS History

6 records (4 active, 2 former)

A104.21.23.171172.67.212.922606:4700:3030::ac43:d45c2606:4700:3036::6815:17ab45.88.188.12895.111.236.64
●A104.21.23.1712026-07-09 → 2026-08-04 · 3 obs
○ 2026-03-31 22:36:12
● 2026-07-09 03:12:24
● 2026-08-04 22:58:24
●A172.67.212.922026-07-09 → 2026-08-04 · 3 obs
○ 2026-03-31 22:36:12
● 2026-07-09 03:12:24
● 2026-08-04 22:58:24
●A2606:4700:3030::ac43:d45c2026-07-09 → 2026-08-04 · 3 obs
○ 2026-03-31 22:36:12
● 2026-07-09 03:12:24
● 2026-08-04 22:58:24
●A2606:4700:3036::6815:17ab2026-07-09 → 2026-08-04 · 3 obs
○ 2026-03-31 22:36:12
● 2026-07-09 03:12:24
● 2026-08-04 22:58:24
○A45.88.188.1282026-03-31 → 2026-03-31 · 4 obs
○ 2026-03-13 09:43:58
● 2026-03-31 22:36:12
○ 2026-07-09 03:12:24
○ 2026-08-04 22:58:24
○A95.111.236.642026-02-19 → 2026-03-13 · 4 obs
● 2026-02-19 19:02:56
● 2026-03-13 09:43:58
○ 2026-03-31 22:36:12
○ 2026-08-04 22:58:24

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comh.gtld-servers.net, m.gtld-servers.net, l.gtld-servers.net, c.gtld-servers.net...-
rikens.comhadlee.ns.cloudflare.com, garret.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.194.67

NS records: hadlee.ns.cloudflare.com, garret.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for rikens.com (unsigned zone)

⏱️ Timing

Total: 244ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.212.92, 104.21.23.171
AAAA22606:4700:3036::6815:17ab, 2606:4700:3030::ac43:d45c
HTTPS1{"priority":1,"target":".","alpn":["h3",

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

mail.rikens.com directs to four IP numbers, which are 104.21.23.171, 172.67.212.92, 2606:4700:3030::ac43:d45c and 2606:4700:3036::6815:17ab.

Additional host names — www.videodownloaderonline.net, www.gdonxwxutl.info, bty.com.my and two others — share IP numbers with mail.rikens.com.