mathdata.cn - dns.ninja

mathdata.cn

DNSSEC⚠️ Not signed
A2606:4700:3030::6815:3f2f🇺🇸 Cloudflare2606:4700:3030::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:8fb3🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.63.47Cloudflare104.21.48.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.143.179🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSemerie.ns.cloudflare.com ⭐
A2606:4700:50::a29f:2673🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRemerie.ns.cloudflare.com
A2803:f800:50::6ca2:c273🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRemerie.ns.cloudflare.com
A2a06:98c1:50::ac40:2273🇺🇸 Cloudflare2a06:98c1:50::/45
PTRemerie.ns.cloudflare.com
A108.162.194.115🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRemerie.ns.cloudflare.com
A162.159.38.115Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRemerie.ns.cloudflare.com
A172.64.34.115🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRemerie.ns.cloudflare.com
NSguss.ns.cloudflare.com
A2606:4700:58::adf5:3bac🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRguss.ns.cloudflare.com
A2803:f800:50::6ca2:c1ac🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRguss.ns.cloudflare.com
A2a06:98c1:50::ac40:21ac🇺🇸 Cloudflare2a06:98c1:50::/45
PTRguss.ns.cloudflare.com
A108.162.193.172🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRguss.ns.cloudflare.com
A172.64.33.172🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRguss.ns.cloudflare.com
A173.245.59.172🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRguss.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.63.47, 172.67.143.179
IPv6 hints2606:4700:3030::6815:3f2f, 2606:4700:3037::ac43:8fb3
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=171, name=cloudflare-ech.com
SOAemerie.ns.cloudflare.comdns@cloudflare.com serial=2410375133

cn

DNSSEC🔒 Signed (DS record present)
NSa.dns.cn ⭐
NSb.dns.cn
NSc.dns.cn
NSd.dns.cn
NSe.dns.cn
NSns.cernet.net ⚠️ Not in parent delegation
SOAa.dns.cnroot@cnnic.cn serial=2035146845

Same first word

mathdata.cn
mathdata.com
mathdata.net

Similar names

datamath.be
datamath.com
datamath.org
datamath.dk
datamath.net

DNS History

12 records (6 active, 6 former)

202120222023202420252026NSemerie.ns.cloudflare.comguss.ns.cloudflare.comdns21.hichina.comdns22.hichina.comMXmxbiz1.qq.commxbiz2.qq.comA104.21.63.47172.67.143.1792606:4700:3030::6815:3f2f2606:4700:3037::ac43:8fb32606:4700:3031::6815:3f2f2606:4700:3035::ac43:8fb3
○NSdns21.hichina.com2020-02-19 → 2020-02-19 · 3 obs
● 2020-02-19 17:07:08
○ 2026-06-17 15:18:34
○ 2026-08-06 01:44:00
○NSdns22.hichina.com2020-02-19 → 2020-02-19 · 3 obs
● 2020-02-19 17:07:08
○ 2026-06-17 15:18:34
○ 2026-08-06 01:44:00
●NSemerie.ns.cloudflare.com2026-06-17 → 2026-08-06 · 3 obs
○ 2020-02-19 17:07:08
● 2026-06-17 15:18:34
● 2026-08-06 01:44:00
●NSguss.ns.cloudflare.com2026-06-17 → 2026-08-06 · 3 obs
○ 2020-02-19 17:07:08
● 2026-06-17 15:18:34
● 2026-08-06 01:44:00
○MXmxbiz1.qq.com2020-02-19 → 2020-02-19 · 3 obs
● 2020-02-19 17:07:08
○ 2026-06-17 15:18:34
○ 2026-08-06 01:44:00
○MXmxbiz2.qq.com2020-02-19 → 2020-02-19 · 3 obs
● 2020-02-19 17:07:08
○ 2026-06-17 15:18:34
○ 2026-08-06 01:44:00
●A104.21.63.472026-06-17 → 2026-08-06 · 2 obs
● 2026-06-17 15:18:34
● 2026-08-06 01:44:00
●A172.67.143.1792026-06-17 → 2026-08-06 · 2 obs
● 2026-06-17 15:18:34
● 2026-08-06 01:44:00
●A2606:4700:3030::6815:3f2f2026-07-14 → 2026-08-06 · 3 obs
○ 2026-06-17 15:18:34
● 2026-07-14 04:41:26
● 2026-08-06 01:44:00
○A2606:4700:3031::6815:3f2f2026-06-17 → 2026-06-17 · 3 obs
● 2026-06-17 15:18:34
○ 2026-07-14 04:41:26
○ 2026-08-06 01:44:00
○A2606:4700:3035::ac43:8fb32026-06-17 → 2026-06-17 · 3 obs
● 2026-06-17 15:18:34
○ 2026-07-14 04:41:26
○ 2026-08-06 01:44:00
●A2606:4700:3037::ac43:8fb32026-07-14 → 2026-08-06 · 3 obs
○ 2026-06-17 15:18:34
● 2026-07-14 04:41:26
● 2026-08-06 01:44:00

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
cnc.dns.cn, e.dns.cn, b.dns.cn, a.dns.cn...-
mathdata.cnguss.ns.cloudflare.com, emerie.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.33.172

NS records: guss.ns.cloudflare.com, emerie.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mathdata.cn (unsigned zone)

⏱️ Timing

Total: 551ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.63.47, 172.67.143.179
AAAA22606:4700:3030::6815:3f2f, 2606:4700:3037::ac43:8fb3
NS2emerie.ns.cloudflare.com, guss.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1emerie.ns.cloudflare.com dns.cloudflare.

Analysis

IP Addresses

mathdata.cn points to the four IP addresses 104.21.63.47, 172.67.143.179, 2606:4700:3030::6815:3f2f and 2606:4700:3037::ac43:8fb3.

Among the host names that share IP numbers with mathdata.cn are www.ericthemagicguy.com, mointellect.lt, safewco.com and two others.

Name Servers

Two name servers handle the delegation for mathdata.cn: emerie.ns.cloudflare.com and guss.ns.cloudflare.com.

mathdata.cn has the same name server delegation as a number of other domains, such as 36517999.com, home517.com, gdgypm.com and two more.

There is at least partial name server overlap between mathdata.cn and other domains — acquireusanow.info, bella-cook.com, tianxiahuaquan.com and two more among them.

These name servers frequently co-occur with the name servers monroe.ns.cloudflare.com and frank.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

emerie.ns.cloudflare.com resolves to 108.162.194.115, 162.159.38.115 and 172.64.34.115 among others, with 3 other IP addresses in total.

guss.ns.cloudflare.com resolves to 108.162.193.172, 172.64.33.172 and 173.245.59.172 among others, with 3 other IP addresses in total.