mathlesson90.help - robtex.com

mathlesson90.help

DNSSEC⚠️ Not signed
A2606:4700:3033::6815:28f6🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::ac43:bccb🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.40.246Cloudflare104.21.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.188.203🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSdecker.ns.cloudflare.com ⭐
A2606:4700:58::a29f:2c9b🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdecker.ns.cloudflare.com
A2803:f800:50::6ca2:c39b🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRdecker.ns.cloudflare.com
A2a06:98c1:50::ac40:239b🇺🇸 Cloudflare2a06:98c1:50::/45
PTRdecker.ns.cloudflare.com
A108.162.195.155🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdecker.ns.cloudflare.com
A162.159.44.155Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdecker.ns.cloudflare.com
A172.64.35.155🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRdecker.ns.cloudflare.com
NSelinore.ns.cloudflare.com
A2606:4700:50::adf5:3a99🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRelinore.ns.cloudflare.com
A2803:f800:50::6ca2:c099🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRelinore.ns.cloudflare.com
A2a06:98c1:50::ac40:2099🇺🇸 Cloudflare2a06:98c1:50::/45
PTRelinore.ns.cloudflare.com
A108.162.192.153🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRelinore.ns.cloudflare.com
A172.64.32.153🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRelinore.ns.cloudflare.com
A173.245.58.153🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRelinore.ns.cloudflare.com
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.40.246, 172.67.188.203
IPv6 hints2606:4700:3033::6815:28f6, 2606:4700:3034::ac43:bccb
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=128, name=cloudflare-ech.com
SOAdecker.ns.cloudflare.comdns@cloudflare.com serial=2406800669

help

DNSSEC🔒 Signed (DS record present)
NSns0.centralnic.net ⭐
NSa.nic.help
NSb.nic.help
NSc.nic.help
NSd.nic.help
SOAns0.centralnic.nethostmaster@centralnic.net serial=1783948111

Same first word

mathlesson90.help

DNS History

15 records (6 active, 9 former)

NSdecker.ns.cloudflare.comelinore.ns.cloudflare.comA104.21.40.246172.67.188.2032606:4700:3033::6815:28f62606:4700:3034::ac43:bccb188.114.96.0188.114.96.4188.114.97.0188.114.97.42606:4700:3031::6815:28f62a06:98c1:3120::2a06:98c1:3120::42a06:98c1:3121::2a06:98c1:3121::4
●NSdecker.ns.cloudflare.com2026-06-11 → 2026-07-13 · 2 obs
● 2026-06-11 21:35:26
● 2026-07-13 13:58:08
●NSelinore.ns.cloudflare.com2026-06-11 → 2026-07-13 · 2 obs
● 2026-06-11 21:35:26
● 2026-07-13 13:58:08
●A104.21.40.2462026-06-11 → 2026-07-13 · 5 obs
● 2026-06-11 21:35:26
● 2026-06-11 22:23:14
○ 2026-06-22 05:30:58
● 2026-07-13 13:58:06
● 2026-07-13 13:58:08
●A172.67.188.2032026-06-11 → 2026-07-13 · 5 obs
● 2026-06-11 21:35:26
● 2026-06-11 22:23:14
○ 2026-06-22 05:30:58
● 2026-07-13 13:58:06
● 2026-07-13 13:58:08
○A188.114.96.02026-06-22 → 2026-06-22 · 6 obs
○ 2026-06-11 22:23:14
● 2026-06-22 05:30:58
○ 2026-06-22 12:40:04
● 2026-06-22 13:36:18
○ 2026-07-13 13:58:06
○ 2026-07-13 13:58:08
○A188.114.96.42026-06-22 → 2026-06-22 · 4 obs
○ 2026-06-22 05:30:58
● 2026-06-22 12:40:04
○ 2026-06-22 13:36:18
○ 2026-07-13 13:58:08
○A188.114.97.02026-06-22 → 2026-06-22 · 6 obs
○ 2026-06-11 22:23:14
● 2026-06-22 05:30:58
○ 2026-06-22 12:40:04
● 2026-06-22 13:36:18
○ 2026-07-13 13:58:06
○ 2026-07-13 13:58:08
○A188.114.97.42026-06-22 → 2026-06-22 · 4 obs
○ 2026-06-22 05:30:58
● 2026-06-22 12:40:04
○ 2026-06-22 13:36:18
○ 2026-07-13 13:58:08
○A2606:4700:3031::6815:28f62026-06-11 → 2026-06-11 · 4 obs
● 2026-06-11 21:35:26
● 2026-06-11 22:23:14
○ 2026-06-22 05:30:58
○ 2026-07-13 13:58:08
●A2606:4700:3033::6815:28f62026-07-13 → 2026-07-13 · 3 obs
○ 2026-06-22 13:36:18
● 2026-07-13 13:58:06
● 2026-07-13 13:58:08
●A2606:4700:3034::ac43:bccb2026-06-11 → 2026-07-13 · 5 obs
● 2026-06-11 21:35:26
● 2026-06-11 22:23:14
○ 2026-06-22 05:30:58
● 2026-07-13 13:58:06
● 2026-07-13 13:58:08
○A2a06:98c1:3120::2026-06-22 → 2026-06-22 · 6 obs
○ 2026-06-11 22:23:14
● 2026-06-22 05:30:58
○ 2026-06-22 12:40:04
● 2026-06-22 13:36:18
○ 2026-07-13 13:58:06
○ 2026-07-13 13:58:08
○A2a06:98c1:3120::42026-06-22 → 2026-06-22 · 4 obs
○ 2026-06-22 05:30:58
● 2026-06-22 12:40:04
○ 2026-06-22 13:36:18
○ 2026-07-13 13:58:08
○A2a06:98c1:3121::2026-06-22 → 2026-06-22 · 6 obs
○ 2026-06-11 22:23:14
● 2026-06-22 05:30:58
○ 2026-06-22 12:40:04
● 2026-06-22 13:36:18
○ 2026-07-13 13:58:06
○ 2026-07-13 13:58:08
○A2a06:98c1:3121::42026-06-22 → 2026-06-22 · 4 obs
○ 2026-06-22 05:30:58
● 2026-06-22 12:40:04
○ 2026-06-22 13:36:18
○ 2026-07-13 13:58:08

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
helpa.nic.help, b.nic.help, c.nic.help, d.nic.help8 records
mathlesson90.helpdecker.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 mathlesson90.help (unsigned zone)

⏱️ Timing

Total: 621ms | Queries: -

📄 Records

TypeCountSample Data
A2104.21.40.246, 172.67.188.203
AAAA22606:4700:3034::ac43:bccb, 2606:4700:3033::6815:28f6
NS2decker.ns.cloudflare.com, elinore.ns.cloudflare.com
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1decker.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

mathlesson90.help points to the four IP addresses 104.21.40.246, 172.67.188.203, 2606:4700:3033::6815:28f6 and 2606:4700:3034::ac43:bccb.

Two other host names, along with www.thebestembroidery.com.cdn.cloudflare.net, future-media.biz and www.epubxpress.com, also share IP numbers with mathlesson90.help.

Name Servers

The NS records for mathlesson90.help delegate to decker.ns.cloudflare.com and elinore.ns.cloudflare.com.

mathlesson90.help shares its NS records with other domains, for example linanada.com, mathlesson10.help, nevrlate.com and two others.

The name servers of mathlesson90.help overlap at least partially with those of other domains — among them municipiodeoaxaca.gob.mx, totalcalcio.it, wilsonacademy.biz and two more.

These name servers commonly appear alongside the name servers malavika.ns.cloudflare.com and julio.ns.cloudflare.com.

DNS names with 6 IP addresses:

decker.ns.cloudflare.com maps to 108.162.195.155, 162.159.44.155, 172.64.35.155 and 3 additional IP addresses.

elinore.ns.cloudflare.com maps to 108.162.192.153, 172.64.32.153, 173.245.58.153 and 3 additional IP addresses.