mathlesson100.help - robtex.com
mathlesson100.help
| DNSSEC | ⚠️ Not signed | ||||||
| A | 2606:4700:3033::ac43:be3d🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 2606:4700:3035::6815:13da🇺🇸 Cloudflare2606:4700:3035::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 104.21.19.218Cloudflare104.21.16.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints | ||||||
| A | 172.67.190.61🇺🇸 Cloudflare172.67.176.0/20 , 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 | 162.159.44.155Cloudflare162.159.32.0/20 , 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 | 104.21.19.218, 172.67.190.61 | ||||||
| IPv6 hints | 2606:4700:3033::ac43:be3d, 2606:4700:3035::6815:13da | ||||||
| ECH | X25519, HKDF-SHA256 + AES-128-GCM draft, id=215, name=cloudflare-ech.com | ||||||
| SOA | decker.ns.cloudflare.comdns@cloudflare.com serial=2406800755 | ||||||
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.nethostmaster@centralnic.net serial=1784257497 | ||||||
Same first word
mathlesson100.help |
DNS History
7 records (6 active, 1 former)
●NSdecker.ns.cloudflare.com2026-06-11 → 2026-07-17 · 2 obs
● 2026-07-17 03:31:44
●NSelinore.ns.cloudflare.com2026-06-11 → 2026-07-17 · 2 obs
● 2026-07-17 03:31:44
●A104.21.19.2182026-06-11 → 2026-07-17 · 2 obs
● 2026-07-17 03:31:44
●A172.67.190.612026-06-11 → 2026-07-17 · 2 obs
● 2026-07-17 03:31:44
●A2606:4700:3033::ac43:be3d2026-06-11 → 2026-07-17 · 2 obs
● 2026-07-17 03:31:44
●A2606:4700:3035::6815:13da2026-07-17 → 2026-07-17 · 2 obs
● 2026-07-17 03:31:44
○A2606:4700:3036::6815:13da2026-06-11 → 2026-06-11 · 2 obs
○ 2026-07-17 03:31:44
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| help | a.nic.help, b.nic.help, c.nic.help, d.nic.help | 8 records |
| mathlesson100.help | decker.ns.cloudflare.com, elinore.ns.cloudflare.com | - |
✅ Authoritative Response
Server:172.64.32.153
NS records: decker.ns.cloudflare.com, elinore.ns.cloudflare.com
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for mathlesson100.help (unsigned zone)
⏱️ Timing
Total: 540ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 2 | 104.21.19.218, 172.67.190.61 |
| AAAA | 2 | 2606:4700:3035::6815:13da, 2606:4700:3033::ac43:be3d |
| 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, b.nic.help, c.nic.help...)
Analysis
IP Addresses
mathlesson100.help points to the four IP addresses 104.21.19.218, 172.67.190.61, 2606:4700:3033::ac43:be3d and 2606:4700:3035::6815:13da.
Additional host names — huangjinyidai.cn, firstserviceplus.com, www.paralegaloccupation.com and two others — share IP numbers with mathlesson100.help.
Name Servers
DNS delegation for mathlesson100.help points to two name servers: decker.ns.cloudflare.com and elinore.ns.cloudflare.com.
mathlesson100.help shares its name server setup with other domains, including yowe.net, mathlesson90.help, mathlesson80.help and two others.
At least some of mathlesson100.help's name servers are shared with other domains, for example pafibolaangmongondowutarakab.org, klikme88-bosku.com, miamivalleyhearingandbalance.com and two more.
It is common for these name servers to be used in conjunction with the name servers julio.ns.cloudflare.com, malavika.ns.cloudflare.com and sasha.ns.cloudflare.com.
Host names with 6 IP numbers:
decker.ns.cloudflare.com has IP addresses 108.162.195.155, 162.159.44.155 and 172.64.35.155, plus 3 other.
elinore.ns.cloudflare.com has IP addresses 108.162.192.153, 172.64.32.153 and 173.245.58.153, plus 3 other.