mathforcs.io - robtex.com

mathforcs.io

DNSSEC⚠️ Not signed
A2606:4700:3036::6815:be6🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:c0e1🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.11.230Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.192.225🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSleonard.ns.cloudflare.com ⭐
A2606:4700:58::a29f:2c36🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRleonard.ns.cloudflare.com
A2803:f800:50::6ca2:c336🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRleonard.ns.cloudflare.com
A2a06:98c1:50::ac40:2336🇺🇸 Cloudflare2a06:98c1:50::/45
PTRleonard.ns.cloudflare.com
A108.162.195.54🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRleonard.ns.cloudflare.com
A162.159.44.54Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRleonard.ns.cloudflare.com
A172.64.35.54🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRleonard.ns.cloudflare.com
NSsusan.ns.cloudflare.com
A2606:4700:50::a29f:26c7🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsusan.ns.cloudflare.com
A2803:f800:50::6ca2:c2c7🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRsusan.ns.cloudflare.com
A2a06:98c1:50::ac40:22c7🇺🇸 Cloudflare2a06:98c1:50::/45
PTRsusan.ns.cloudflare.com
A108.162.194.199🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsusan.ns.cloudflare.com
A162.159.38.199Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsusan.ns.cloudflare.com
A172.64.34.199🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRsusan.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.11.230, 172.67.192.225
IPv6 hints2606:4700:3036::6815:be6, 2606:4700:3037::ac43:c0e1
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=232, name=cloudflare-ech.com
SOAleonard.ns.cloudflare.comdns@cloudflare.com serial=2410033318

io

DNSSEC🔒 Signed (DS record present)
NSa0.nic.io ⭐
NSa2.nic.io
NSb0.nic.io
NSc0.nic.io
SOAa0.nic.iohostmaster@donuts.email serial=1785192701
rank #767183 globally
rank #6372 in the tld

Same first word

mathforcs.io
mathforcs.com

Similar names

carsofhtm.com
marchsoft.com
mosfracht.ru
chromfast.com
marchsoft.cn
sformatch.com

DNS History

10 records (6 active, 4 former)

NSleonard.ns.cloudflare.comsusan.ns.cloudflare.comA104.21.11.230172.67.192.2252606:4700:3036::6815:be62606:4700:3037::ac43:c0e1188.114.96.4188.114.97.42a06:98c1:3120::42a06:98c1:3121::4
●NSleonard.ns.cloudflare.com2026-07-23 → 2026-07-27 · 2 obs
● 2026-07-23 08:54:58
● 2026-07-27 23:21:16
●NSsusan.ns.cloudflare.com2026-07-23 → 2026-07-27 · 2 obs
● 2026-07-23 08:54:58
● 2026-07-27 23:21:16
●A104.21.11.2302026-07-23 → 2026-07-27 · 3 obs
○ 2026-07-23 08:54:58
● 2026-07-23 10:08:08
● 2026-07-27 23:21:16
●A172.67.192.2252026-07-23 → 2026-07-27 · 3 obs
○ 2026-07-23 08:54:58
● 2026-07-23 10:08:08
● 2026-07-27 23:21:16
○A188.114.96.42026-07-23 → 2026-07-23 · 3 obs
● 2026-07-23 08:54:58
○ 2026-07-23 10:08:08
○ 2026-07-27 23:21:16
○A188.114.97.42026-07-23 → 2026-07-23 · 3 obs
● 2026-07-23 08:54:58
○ 2026-07-23 10:08:08
○ 2026-07-27 23:21:16
●A2606:4700:3036::6815:be62026-07-23 → 2026-07-27 · 3 obs
○ 2026-07-23 08:54:58
● 2026-07-23 10:08:08
● 2026-07-27 23:21:16
●A2606:4700:3037::ac43:c0e12026-07-23 → 2026-07-27 · 3 obs
○ 2026-07-23 08:54:58
● 2026-07-23 10:08:08
● 2026-07-27 23:21:16
○A2a06:98c1:3120::42026-07-23 → 2026-07-23 · 3 obs
● 2026-07-23 08:54:58
○ 2026-07-23 10:08:08
○ 2026-07-27 23:21:16
○A2a06:98c1:3121::42026-07-23 → 2026-07-23 · 3 obs
● 2026-07-23 08:54:58
○ 2026-07-23 10:08:08
○ 2026-07-27 23:21:16

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
ioa2.nic.io, c0.nic.io, a0.nic.io, b0.nic.io-
mathforcs.iosusan.ns.cloudflare.com, leonard.ns.cloudflare.com-

✅ Authoritative Response

Server:172.64.34.199

NS records: susan.ns.cloudflare.com, leonard.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mathforcs.io (unsigned zone)

⏱️ Timing

Total: 289ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.192.225, 104.21.11.230
AAAA22606:4700:3037::ac43:c0e1, 2606:4700:3036::6815:be6
NS2leonard.ns.cloudflare.com, susan.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1leonard.ns.cloudflare.com dns.cloudflare

Analysis

IP Addresses

mathforcs.io has four IP addresses: 104.21.11.230, 172.67.192.225, 2606:4700:3036::6815:be6 and 2606:4700:3037::ac43:c0e1.

Additional host names — creatstudio.co.uk, plumeblanche.com, koiponds.org and two others — share IP numbers with mathforcs.io.

Name Servers

mathforcs.io has two authoritative name servers — leonard.ns.cloudflare.com and susan.ns.cloudflare.com.

mathforcs.io shares its name server setup with other domains, including zavvi.me, r-d.io, aiencrypto.nl and two others.

mathforcs.io shares at least some of its name servers with other domains, including aisl-defender.pro, capeaudiocollege.co.za, purchasetopadlock.com and two others.

These name servers are frequently paired with the name servers denver.ns.cloudflare.com, damon.ns.cloudflare.com and noel.ns.cloudflare.com.

Host names with 6 IP numbers:

leonard.ns.cloudflare.com points to 108.162.195.54, 162.159.44.54, 172.64.35.54 and 3 other IP addresses.

susan.ns.cloudflare.com points to 108.162.194.199, 162.159.38.199, 172.64.34.199 and 3 other IP addresses.