mathforcs.io - dns.ninja

`mathforcs.io`

DNSSEC	⚠️ Not signed
A	2606:4700:3036::6815:be6^{🇺🇸 Cloudflare2606:4700:3036::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:c0e1^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.11.230^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.192.225^{🇺🇸 Cloudflare172.67.192.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`leonard.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c36^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leonard.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c336^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`leonard.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2336^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`leonard.ns.cloudflare.com`
		A	108.162.195.54^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leonard.ns.cloudflare.com`
		A	162.159.44.54^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leonard.ns.cloudflare.com`
		A	172.64.35.54^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`leonard.ns.cloudflare.com`
NS	`susan.ns.cloudflare.com`
		A	2606:4700:50::a29f:26c7^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`susan.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c2c7^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`susan.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:22c7^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`susan.ns.cloudflare.com`
		A	108.162.194.199^{🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`susan.ns.cloudflare.com`
		A	162.159.38.199^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`susan.ns.cloudflare.com`
		A	172.64.34.199^{🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`susan.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.11.230, 172.67.192.225
		IPv6 hints	2606:4700:3036::6815:be6, 2606:4700:3037::ac43:c0e1
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=68, name=cloudflare-ech.com
SOA	`leonard.ns.cloudflare.com`dns@cloudflare.com serial=2410033318

`io`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a0.nic.io` ⭐
	NS	`a2.nic.io`
	NS	`b0.nic.io`
	NS	`c0.nic.io`
	SOA	`a0.nic.io`hostmaster@donuts.email serial=1784961864

rank #401486 globally
rank #3249 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.com2026-07-23 → 2026-07-25 · 2 obs

● 2026-07-23 08:54:58
● 2026-07-25 07:03:10

●NSsusan.ns.cloudflare.com2026-07-23 → 2026-07-25 · 2 obs

● 2026-07-23 08:54:58
● 2026-07-25 07:03:10

●A104.21.11.2302026-07-23 → 2026-07-25 · 3 obs

○ 2026-07-23 08:54:58
● 2026-07-23 10:08:08
● 2026-07-25 07:03:10

●A172.67.192.2252026-07-23 → 2026-07-25 · 3 obs

○ 2026-07-23 08:54:58
● 2026-07-23 10:08:08
● 2026-07-25 07:03:10

○A188.114.96.42026-07-23 → 2026-07-23 · 3 obs

● 2026-07-23 08:54:58
○ 2026-07-23 10:08:08
○ 2026-07-25 07:03:10

○A188.114.97.42026-07-23 → 2026-07-23 · 3 obs

● 2026-07-23 08:54:58
○ 2026-07-23 10:08:08
○ 2026-07-25 07:03:10

●A2606:4700:3036::6815:be62026-07-23 → 2026-07-25 · 3 obs

○ 2026-07-23 08:54:58
● 2026-07-23 10:08:08
● 2026-07-25 07:03:10

●A2606:4700:3037::ac43:c0e12026-07-23 → 2026-07-25 · 3 obs

○ 2026-07-23 08:54:58
● 2026-07-23 10:08:08
● 2026-07-25 07:03:10

○A2a06:98c1:3120::42026-07-23 → 2026-07-23 · 3 obs

● 2026-07-23 08:54:58
○ 2026-07-23 10:08:08
○ 2026-07-25 07:03:10

○A2a06:98c1:3121::42026-07-23 → 2026-07-23 · 3 obs

● 2026-07-23 08:54:58
○ 2026-07-23 10:08:08
○ 2026-07-25 07:03:10

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
io	c0.nic.io, a2.nic.io, a0.nic.io, b0.nic.io	-
mathforcs.io	leonard.ns.cloudflare.com, susan.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.35.54

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

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mathforcs.io (unsigned zone)

⏱️ Timing

Total: 445ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`104.21.11.230, 172.67.192.225`
AAAA	2	`2606:4700:3036::6815:be6, 2606:4700:3037::ac43:c0e1`
NS	2	`leonard.ns.cloudflare.com, susan.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`leonard.ns.cloudflare.com dns.cloudflare`

Analysis

IP Addresses

mathforcs.io points to the 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 is served by two delegated 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.

There is at least partial name server overlap between mathforcs.io and other domains — aisl-defender.pro, capeaudiocollege.co.za, purchasetopadlock.com and two more among them.

The name servers denver.ns.cloudflare.com, damon.ns.cloudflare.com and noel.ns.cloudflare.com are often found in combination with these name servers.

Host names with 6 IP numbers:

leonard.ns.cloudflare.com carries IP addresses 108.162.195.54, 162.159.44.54 and 172.64.35.54, with 3 other addresses beyond those.

susan.ns.cloudflare.com carries IP addresses 108.162.194.199, 162.159.38.199 and 172.64.34.199, with 3 other addresses beyond those.