mail.usic.cn - robtex.com

mail.usic.cn

DNSSEC⚠️ Not signed
A2606:4700:3032::6815:de3🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:855c🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.13.227Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.133.92🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.13.227, 172.67.133.92
IPv6 hints2606:4700:3032::6815:de3, 2606:4700:3037::ac43:855c
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=99, name=cloudflare-ech.com

usic.cn

DNSSEC⚠️ Not signed
A2606:4700:3032::6815:de3🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:855c🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.13.227Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.133.92🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSmia.ns.cloudflare.com ⭐
NSricardo.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.13.227, 172.67.133.92
IPv6 hints2606:4700:3032::6815:de3, 2606:4700:3037::ac43:855c
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=99, name=cloudflare-ech.com
SOAmia.ns.cloudflare.comdns@cloudflare.com serial=2401176679

Previously MX for

usic.cn

Same first word

mail.co.uk
mail.net.mk
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mail.freedesktop.org
mail.direct
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DNS History

12 records (4 active, 8 former)

20162017201820192020202120222023202420252026NSns1.72dns.comns2.72dns.comA104.21.13.227172.67.133.922606:4700:3032::6815:de32606:4700:3037::ac43:855c188.114.96.0188.114.97.027.54.255.2002a06:98c1:3120::2a06:98c1:3121::CNAMEgzmail.sz21.net
○NSns1.72dns.com2015-08-10 → 2016-09-10 · 4 obs
● 2015-08-10 00:56:28
● 2016-09-10 21:23:04
○ 2026-04-10 12:04:56
○ 2026-05-12 17:25:00
○NSns2.72dns.com2015-08-10 → 2016-09-10 · 4 obs
● 2015-08-10 00:56:28
● 2016-09-10 21:23:04
○ 2026-04-10 12:04:56
○ 2026-05-12 17:25:00
●A104.21.13.2272026-04-10 → 2026-05-12 · 5 obs
○ 2016-09-10 21:23:04
● 2026-04-10 12:04:56
○ 2026-04-14 12:30:02
● 2026-05-01 09:23:54
● 2026-05-12 17:25:00
●A172.67.133.922026-04-10 → 2026-05-12 · 5 obs
○ 2016-09-10 21:23:04
● 2026-04-10 12:04:56
○ 2026-04-14 12:30:02
● 2026-05-01 09:23:54
● 2026-05-12 17:25:00
○A188.114.96.02026-04-14 → 2026-04-14 · 4 obs
○ 2026-04-10 12:04:56
● 2026-04-14 12:30:02
○ 2026-05-01 09:23:54
○ 2026-05-12 17:25:00
○A188.114.97.02026-04-14 → 2026-04-14 · 4 obs
○ 2026-04-10 12:04:56
● 2026-04-14 12:30:02
○ 2026-05-01 09:23:54
○ 2026-05-12 17:25:00
●A2606:4700:3032::6815:de32026-04-10 → 2026-05-12 · 5 obs
○ 2016-09-10 21:23:04
● 2026-04-10 12:04:56
○ 2026-04-14 12:30:02
● 2026-05-01 09:23:54
● 2026-05-12 17:25:00
●A2606:4700:3037::ac43:855c2026-04-10 → 2026-05-12 · 5 obs
○ 2016-09-10 21:23:04
● 2026-04-10 12:04:56
○ 2026-04-14 12:30:02
● 2026-05-01 09:23:54
● 2026-05-12 17:25:00
○A27.54.255.2002015-08-10 → 2016-09-10 · 4 obs
● 2015-08-10 00:56:28
● 2016-09-10 21:23:04
○ 2026-04-10 12:04:56
○ 2026-05-12 17:25:00
○A2a06:98c1:3120::2026-04-14 → 2026-04-14 · 4 obs
○ 2026-04-10 12:04:56
● 2026-04-14 12:30:02
○ 2026-05-01 09:23:54
○ 2026-05-12 17:25:00
○A2a06:98c1:3121::2026-04-14 → 2026-04-14 · 4 obs
○ 2026-04-10 12:04:56
● 2026-04-14 12:30:02
○ 2026-05-01 09:23:54
○ 2026-05-12 17:25:00
○CNAMEgzmail.sz21.net2015-08-10 → 2016-09-10 · 4 obs
● 2015-08-10 00:56:28
● 2016-09-10 21:23:04
○ 2026-04-10 12:04:56
○ 2026-05-12 17:25:00

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cna.dns.cn, b.dns.cn, c.dns.cn, d.dns.cn...-
usic.cnmia.ns.cloudflare.com, ricardo.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.32.200

NS records: mia.ns.cloudflare.com, ricardo.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for usic.cn (unsigned zone)

⏱️ Timing

Total: 1760ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.133.92, 104.21.13.227
AAAA22606:4700:3037::ac43:855c, 2606:4700:3032::6815:de3
HTTPS1{"priority":1,"target":".","alpn":["h3",

Analysis

IP Addresses

mail.usic.cn points to four IP numbers: 2606:4700:3032::6815:de3, 2606:4700:3037::ac43:855c, 104.21.13.227 and 172.67.133.92.

Other host names, for instance bosssultanahmet.com, www.darlenemccormick.com, dinundisro.pro, spurreyworks.digital and xbox-mag.net share IP numbers with mail.usic.cn.