`mathlesson10.help`

DNSSEC	⚠️ Not signed
A	2606:4700:3033::6815:5977^{🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	2606:4700:3035::ac43:8ddd^{🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	104.21.89.119^{Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
A	172.67.141.221^{🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US} ✓ In HTTPS hints
NS	`decker.ns.cloudflare.com` ⭐
		A	2606:4700:58::a29f:2c9b^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`decker.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c39b^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`decker.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:239b^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`decker.ns.cloudflare.com`
		A	108.162.195.155^{🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`decker.ns.cloudflare.com`
		A	162.159.44.155^{Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`decker.ns.cloudflare.com`
		A	172.64.35.155^{🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`decker.ns.cloudflare.com`
NS	`elinore.ns.cloudflare.com`
		A	2606:4700:50::adf5:3a99^{🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elinore.ns.cloudflare.com`
		A	2803:f800:50::6ca2:c099^{🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L}
			PTR	`elinore.ns.cloudflare.com`
		A	2a06:98c1:50::ac40:2099^{🇺🇸 Cloudflare2a06:98c1:50::/45}
			PTR	`elinore.ns.cloudflare.com`
		A	108.162.192.153^{🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elinore.ns.cloudflare.com`
		A	172.64.32.153^{🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elinore.ns.cloudflare.com`
		A	173.245.58.153^{🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US}
			PTR	`elinore.ns.cloudflare.com`
HTTPS	HTTP/3, HTTP/2 ✓ hints match
		IPv4 hints	104.21.89.119, 172.67.141.221
		IPv6 hints	2606:4700:3033::6815:5977, 2606:4700:3035::ac43:8ddd
		ECH	X25519, HKDF-SHA256 + AES-128-GCM draft, id=23, name=cloudflare-ech.com
SOA	`decker.ns.cloudflare.com`dns@cloudflare.com serial=2406800587

`help`

	DNSSEC	🔒 Signed (DS record present)
	NS	`ns0.centralnic.net` ⭐
	NS	`a.nic.help`
	NS	`b.nic.help`
	NS	`c.nic.help`
	NS	`d.nic.help`
	SOA	`ns0.centralnic.net`hostmaster@centralnic.net serial=1784144994

Same first word

mathlesson10.help

DNS History

7 records (6 active, 1 former)

●NSdecker.ns.cloudflare.com2026-06-11 → 2026-07-15 · 2 obs

● 2026-06-11 21:19:26
● 2026-07-15 20:21:22

●NSelinore.ns.cloudflare.com2026-06-11 → 2026-07-15 · 2 obs

● 2026-06-11 21:19:26
● 2026-07-15 20:21:22

●A104.21.89.1192026-06-11 → 2026-07-15 · 2 obs

● 2026-06-11 21:19:26
● 2026-07-15 20:21:22

●A172.67.141.2212026-06-11 → 2026-07-15 · 2 obs

● 2026-06-11 21:19:26
● 2026-07-15 20:21:22

●A2606:4700:3033::6815:59772026-06-20 → 2026-07-15 · 3 obs

○ 2026-06-11 21:19:26
● 2026-06-20 02:56:18
● 2026-07-15 20:21:22

○A2606:4700:3034::6815:59772026-06-11 → 2026-06-11 · 3 obs

● 2026-06-11 21:19:26
○ 2026-06-20 02:56:18
○ 2026-07-15 20:21:22

●A2606:4700:3035::ac43:8ddd2026-06-11 → 2026-07-15 · 2 obs

● 2026-06-11 21:19:26
● 2026-07-15 20:21:22

🔍 DNS Trace

📋 Delegation Chain

Zone	Nameservers	Glue
help	a.nic.help, b.nic.help, c.nic.help, d.nic.help	8 records
mathlesson10.help	decker.ns.cloudflare.com, elinore.ns.cloudflare.com	-

✅ Authoritative Response

Server:172.64.35.155

NS records: decker.ns.cloudflare.com, elinore.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mathlesson10.help (unsigned zone)

⏱️ Timing

Total: 315ms | Queries: -

📄 Records

Type	Count	Sample Data
A	2	`172.67.141.221, 104.21.89.119`
AAAA	2	`2606:4700:3035::ac43:8ddd, 2606:4700:3033::6815:5977`
NS	2	`decker.ns.cloudflare.com, elinore.ns.cloudflare.com`
HTTPS	1	`{"priority":1,"target":".","alpn":["h3",`
SOA	1	`decker.ns.cloudflare.com dns.cloudflare.`

📌 Glue Records Collected

Total: 8

In-bailiwick: 8 (a.nic.help, a.nic.help, b.nic.help...)

Analysis

IP Addresses

mathlesson10.help resolves to four IP addresses: 104.21.89.119, 172.67.141.221, 2606:4700:3033::6815:5977 and 2606:4700:3035::ac43:8ddd.

polarbase.ca, cap724.com, cineframe.in and two other host names share IP numbers with mathlesson10.help.

Name Servers

mathlesson10.help uses two name servers for its delegation: decker.ns.cloudflare.com and elinore.ns.cloudflare.com.

mathlesson10.help uses the same name servers as several other domains — among them mathlesson50.help, canadaperu.org, linanada.com and two more.

mathlesson10.help has at least partial name server overlap with other domains, such as jaffer.co, autentikar.app, jeteron.net and two others.

These name servers tend to appear together with the name servers malavika.ns.cloudflare.com, julio.ns.cloudflare.com and terin.ns.cloudflare.com.

Hostnames that resolve to 6 IP addresses:

Hostname decker.ns.cloudflare.com directs to 108.162.195.155, 162.159.44.155 and 172.64.35.155 along with 3 other IP addresses.

Hostname elinore.ns.cloudflare.com directs to 108.162.192.153, 172.64.32.153 and 173.245.58.153 along with 3 other IP addresses.

mathlesson10.help - robtex.com