mail.springdesign.com.cn - robtex.com

mail.springdesign.com.cn

DNSSEC⚠️ Not signed
A2606:4700:3030::6815:a1e🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3033::ac43:bddf🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.10.30Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.189.223🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.10.30, 172.67.189.223
IPv6 hints2606:4700:3030::6815:a1e, 2606:4700:3033::ac43:bddf
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=223, name=cloudflare-ech.com

springdesign.com.cn

DNSSEC⚠️ Not signed
A2606:4700:3030::6815:a1e🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3033::ac43:bddf🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.10.30Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.189.223🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSezra.ns.cloudflare.com ⭐
NSthea.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.10.30, 172.67.189.223
IPv6 hints2606:4700:3030::6815:a1e, 2606:4700:3033::ac43:bddf
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=223, name=cloudflare-ech.com
SOAezra.ns.cloudflare.comdns@cloudflare.com serial=2400553895

Previously MX for

springdesign.com.cn

Same first word

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DNS History

5 records (4 active, 1 former)

2017201820192020202120222023202420252026A104.21.10.30172.67.189.2232606:4700:3030::6815:a1e2606:4700:3033::ac43:bddf61.151.239.175
●A104.21.10.302026-04-11 → 2026-04-11 · 2 obs
○ 2016-01-25 20:32:18
● 2026-04-11 17:46:46
●A172.67.189.2232026-04-11 → 2026-04-11 · 2 obs
○ 2016-01-25 20:32:18
● 2026-04-11 17:46:46
●A2606:4700:3030::6815:a1e2026-04-11 → 2026-04-11 · 2 obs
○ 2016-01-25 20:32:18
● 2026-04-11 17:46:46
●A2606:4700:3033::ac43:bddf2026-04-11 → 2026-04-11 · 2 obs
○ 2016-01-25 20:32:18
● 2026-04-11 17:46:46
○A61.151.239.1752016-01-25 → 2016-01-25 · 2 obs
● 2016-01-25 20:32:18
○ 2026-04-11 17:46:46

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cna.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...-
springdesign.com.cnezra.ns.cloudflare.com, thea.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.34.247

NS records: ezra.ns.cloudflare.com, thea.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for springdesign.com.cn (unsigned zone)

⏱️ Timing

Total: 980ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.10.30, 172.67.189.223
AAAA22606:4700:3033::ac43:bddf, 2606:4700:3030::6815:a1e
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

mail.springdesign.com.cn points to four IP numbers: 2606:4700:3030::6815:a1e, 2606:4700:3033::ac43:bddf, 104.21.10.30 and 172.67.189.223.

Other host names, for instance ocbtracker.com, thesnowproject.net, ddyxnc.com, lyjgmr.com and rdbg.ru share IP numbers with mail.springdesign.com.cn.