math.dev - dns.ninja

`math.dev`

DNSSEC	⚠️ Not signed
A	2606:4700:3032::6815:324^{🇺🇸 Cloudflare2606:4700:3032::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3037::ac43:822b^{🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.3.36^{Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.130.43^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`alla.ns.cloudflare.com` ⭐
		A	2606:4700:50::adf5:3a3e^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alla.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c03e^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`alla.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:203e^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`alla.ns.cloudflare.com`
		A	108.162.192.62^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alla.ns.cloudflare.com`
		A	172.64.32.62^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alla.ns.cloudflare.com`
		A	173.245.58.62^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`alla.ns.cloudflare.com`
NS	`kyrie.ns.cloudflare.com`
		A	2606:4700:58::a29f:2c26^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kyrie.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c326^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`kyrie.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2326^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`kyrie.ns.cloudflare.com`
		A	108.162.195.38^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kyrie.ns.cloudflare.com`
		A	162.159.44.38^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kyrie.ns.cloudflare.com`
		A	172.64.35.38^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`kyrie.ns.cloudflare.com`
MX	`route1.mx.cloudflare.net` ⭐
		A	2606:4700:f5::b^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::c^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	2606:4700:f5::d^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.11^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.12^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
		A	162.159.205.13^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route1.mx.cloudflare.net`
MX	`route2.mx.cloudflare.net`⁽³¹⁾
		A	2606:4700:f5::e^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::f^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	2606:4700:f5::10^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.17^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.18^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
		A	162.159.205.19^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route2.mx.cloudflare.net`
MX	`route3.mx.cloudflare.net`⁽⁷¹⁾
		A	2606:4700:f5::11^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::12^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	2606:4700:f5::13^{🇺🇸 Cloudflare2606:4700:f5::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.23^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.24^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
		A	162.159.205.25^{Cloudflare162.159.205.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`route3.mx.cloudflare.net`
TXT	`v=spf1 include:_spf.mx.cloudflare.net ~all`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.3.36, 172.67.130.43
		IPv6 hints	2606:4700:3032::6815:324, 2606:4700:3037::ac43:822b
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=36, name=cloudflare-ech.com
SOA	`alla.ns.cloudflare.com`dns@cloudflare.com serial=2406377221

`dev`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns-tld1.charlestonroadregistry.com` ⭐
	NS	`ns-tld2.charlestonroadregistry.com`
	NS	`ns-tld3.charlestonroadregistry.com`
	NS	`ns-tld4.charlestonroadregistry.com`
	NS	`ns-tld5.charlestonroadregistry.com`
	SOA	`ns-tld1.charlestonroadregistry.com`cloud-dns-hostmaster@google.com serial=1

🔒 HSTS Preload (+subdomains)

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DNS History

11 records (9 active, 2 former)

●NSalla.ns.cloudflare.com2026-02-23 → 2026-06-08 · 2 obs

● 2026-02-23 01:04:08
● 2026-06-08 19:44:50

●NSkyrie.ns.cloudflare.com2026-02-23 → 2026-06-08 · 2 obs

● 2026-02-23 01:04:08
● 2026-06-08 19:44:50

●MXroute1.mx.cloudflare.net2026-02-23 → 2026-06-08 · 2 obs

● 2026-02-23 01:04:08
● 2026-06-08 19:44:50

●MXroute2.mx.cloudflare.net2026-02-23 → 2026-06-08 · 2 obs

● 2026-02-23 01:04:08
● 2026-06-08 19:44:50

●MXroute3.mx.cloudflare.net2026-02-23 → 2026-06-08 · 2 obs

● 2026-02-23 01:04:08
● 2026-06-08 19:44:50

●A104.21.3.362026-03-22 → 2026-06-08 · 3 obs

○ 2026-02-23 01:04:08
● 2026-03-22 03:25:26
● 2026-06-08 19:44:50

○A172.64.80.12026-02-23 → 2026-02-23 · 3 obs

● 2026-02-23 01:04:08
○ 2026-03-22 03:25:26
○ 2026-06-08 19:44:50

●A172.67.130.432026-03-22 → 2026-06-08 · 3 obs

○ 2026-02-23 01:04:08
● 2026-03-22 03:25:26
● 2026-06-08 19:44:50

○A2606:4700:130:436c:6f75:6466:6c61:72652026-02-23 → 2026-02-23 · 3 obs

● 2026-02-23 01:04:08
○ 2026-03-22 03:25:26
○ 2026-06-08 19:44:50

●A2606:4700:3032::6815:3242026-03-22 → 2026-06-08 · 3 obs

○ 2026-02-23 01:04:08
● 2026-03-22 03:25:26
● 2026-06-08 19:44:50

●A2606:4700:3037::ac43:822b2026-03-22 → 2026-06-08 · 3 obs

○ 2026-02-23 01:04:08
● 2026-03-22 03:25:26
● 2026-06-08 19:44:50

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
dev	ns-tld5.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com...	-
math.dev	kyrie.ns.cloudflare.com, alla.ns.cloudflare.com	-

✅ Authoritative Response

Server:108.162.192.62

NS records: kyrie.ns.cloudflare.com, alla.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for math.dev (unsigned zone)

⏱️ Timing

Total: 342ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.130.43, 104.21.3.36`
AAAA	2	`2606:4700:3037::ac43:822b, 2606:4700:3032::6815:324`
NS	2	`alla.ns.cloudflare.com, kyrie.ns.cloudflare.com`
MX	3	`route1.mx.cloudflare.net (pri: 12), route2.mx.cloudflare.net (pri: 31)...`
TXT	1	`v=spf1 include:_spf.mx.cloudflare.net ~a`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`alla.ns.cloudflare.com dns.cloudflare.co`

Analysis

IP Addresses

With 4 IP addresses, math.dev directs to 104.21.3.36, 172.67.130.43, 2606:4700:3032::6815:324 and 2606:4700:3037::ac43:822b.

Among the host names that share IP numbers with math.dev are suncare-china.com, www.ilh.com, www.buzz-clip.net and two others.

Name Servers

DNS delegation for math.dev points to two name servers: alla.ns.cloudflare.com and kyrie.ns.cloudflare.com.

math.dev has the same name server delegation as a number of other domains, such as 4in.lt, carropgcl.com, 4i.lt and two more.

math.dev has at least partial name server overlap with other domains, such as domain-driven-lesson.pages.dev, jlinkz.com, pigeonventures.com and two others.

It is common to find these name servers paired with the name servers cora.ns.cloudflare.com.

Host names resolving to 6 IP numbers:

alla.ns.cloudflare.com has IP addresses 108.162.192.62, 172.64.32.62, 173.245.58.62 plus three more.

kyrie.ns.cloudflare.com has IP addresses 108.162.195.38, 162.159.44.38, 172.64.35.38 plus three more.

Mail Servers

math.dev has three mail servers: route1.mx.cloudflare.net, route2.mx.cloudflare.net and route3.mx.cloudflare.net.

math.dev shares at least some of its mail servers with other domains — for example producity.cl, ns2.levelthirty.com, archive-nz.com and two more.

Host names resolving to 6 IP numbers:

route1.mx.cloudflare.net has IP addresses 162.159.205.11, 162.159.205.12, 162.159.205.13 plus three more.

route2.mx.cloudflare.net has IP addresses 162.159.205.17, 162.159.205.18, 162.159.205.19 plus three more.

route3.mx.cloudflare.net has IP addresses 162.159.205.23, 162.159.205.24, 162.159.205.25 plus three more.