mastering.com - robtex.com

mastering.com

DNSSEC⚠️ Not signed
A2606:4700:20::681a:aef🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:20::681a:bef🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:20::ac43:4959🇺🇸 Cloudflare2606:4700:20::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.26.10.239Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.26.11.239Cloudflare104.26.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.73.89🇺🇸 Cloudflare172.67.64.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSgina.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3a75🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgina.ns.cloudflare.com
A2803:f800:50::6ca2:c075🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRgina.ns.cloudflare.com
A2a06:98c1:50::ac40:2075🇺🇸 Cloudflare2a06:98c1:50::/45
PTRgina.ns.cloudflare.com
A108.162.192.117🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgina.ns.cloudflare.com
A172.64.32.117🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgina.ns.cloudflare.com
A173.245.58.117🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRgina.ns.cloudflare.com
NSyichun.ns.cloudflare.com
A2606:4700:58::adf5:3bf8🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRyichun.ns.cloudflare.com
A2803:f800:50::6ca2:c1f8🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRyichun.ns.cloudflare.com
A2a06:98c1:50::ac40:21f8🇺🇸 Cloudflare2a06:98c1:50::/45
PTRyichun.ns.cloudflare.com
A108.162.193.248🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRyichun.ns.cloudflare.com
A172.64.33.248🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRyichun.ns.cloudflare.com
A173.245.59.248🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRyichun.ns.cloudflare.com
MXaspmx.l.google.com ⭐
A2607:f8b0:4023:c03::1a🇺🇸 Google2607:f8b0::/32
PTRdy-in-f26.1e100.net
A142.251.2.26🇺🇸 Google142.251.2.0/24
PTRdl-in-f26.1e100.net
MXalt1.aspmx.l.google.com(5)
A2800:3f0:4003:c0f::1b🇨🇱 Google2800:3f0:4003::/48
A108.177.123.26🇺🇸 Google108.177.123.0/24
PTRlcscld-in-f26.1e100.net
MXalt2.aspmx.l.google.com(5)
A2a00:1450:400b:c02::1a🇮🇪 Google2a00:1450:400b::/48
PTRdj-in-f26.1e100.net
A172.253.116.26🇺🇸 Google172.253.116.0/24
PTRdj-in-f26.1e100.net
MXalt3.aspmx.l.google.com(10)
A2a00:1450:4009:c0f::1a🇬🇧 Google2a00:1450:4009::/48
PTRyulhrs-in-f26.1e100.net
A192.178.223.27🇺🇸 Google192.178.223.0/24
PTRyulhrs-in-f27.1e100.net
MXalt4.aspmx.l.google.com(10)
A2a00:1450:400c:c00::1b🇧🇪 Google2a00:1450:400c::/48
PTRws-in-f27.1e100.net
PTRws-in-x1b.1e100.net
A173.194.76.26🇺🇸 Google173.194.76.0/24
PTRws-in-f26.1e100.net
TXTclickfunnels-domain-verification=eWgQze
TXTfacebook-domain-verification=jhr3cdiy2hj7deeai1br4xwtsggn31
TXTgoogle-site-verification=4r4ggyLzo2fJ5DQAhUXuGjzACcMPdyweTm7fAwj01yo
TXTgoogle-site-verification=Rzgf5yCEdXEsagMHsyOG4188D7JdG16GzQ_tmbFvoyk
TXTgoogle-site-verification=iGmY3C2XwVOq1v5SVIwhCZIn_waqCOxvYfqw5eIZ5SM
TXTv=spf1 mx include:_spf.google.com ~all
HTTPSHTTP/2 ✓ hints match
IPv4 hints104.26.10.239, 104.26.11.239, 172.67.73.89
IPv6 hints2606:4700:20::681a:aef, 2606:4700:20::681a:bef, 2606:4700:20::ac43:4959
SOAgina.ns.cloudflare.comdns@cloudflare.com serial=2401628604

com

DNSSEC🔒 Signed (DS record present)
NSa.gtld-servers.net ⭐
NSb.gtld-servers.net
NSc.gtld-servers.net
NSd.gtld-servers.net
NSe.gtld-servers.net
NSf.gtld-servers.net
NSg.gtld-servers.net
NSh.gtld-servers.net
NSi.gtld-servers.net
NSj.gtld-servers.net
NSk.gtld-servers.net
NSl.gtld-servers.net
NSm.gtld-servers.net
SOAa.gtld-servers.netnstld@verisign-grs.com serial=1776972251
rank #337788 globally
rank #145131 in the tld
WOT: SAFE (87/100)
📈 Tranco rank: #546,722

Subdomains

courses.mastering.com

Same first word

mastering.co
mastering.ie
mastering.marketing
mastering.org
mastering.me
mastering.net
mastering.cz
mastering.se
mastering.co.nz
mastering.academy
mastering.de
mastering.com.au
mastering.domains
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mastering.pl
mastering.digital
mastering.lt
mastering.nl
mastering.ch
mastering.tips
mastering.ee
mastering.ru
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mastering.center
mastering.guru
mastering.life
mastering.eu
mastering.dk
mastering.hu
mastering.com
mastering.com.my
mastering.com.br
mastering.be

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migrantes.it
streaming.love
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instagrem.com
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DNS History

19 records (13 active, 6 former)

20162017201820192020202120222023202420252026NSgina.ns.cloudflare.comyichun.ns.cloudflare.combuy.internettraffic.comns1.uniregistrymarket.linkns2.uniregistrymarket.linksell.internettraffic.comMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.comA104.26.10.239104.26.11.239172.67.73.892606:4700:20::681a:aef2606:4700:20::681a:bef2606:4700:20::ac43:495969.172.201.15369.172.201.208
○NSbuy.internettraffic.com2015-08-19 → 2016-04-21 · 4 obs
● 2015-08-19 01:06:40
● 2016-04-21 02:05:20
○ 2017-01-01 17:44:22
○ 2026-04-23 19:33:58
●NSgina.ns.cloudflare.com2026-02-16 → 2026-04-23 · 3 obs
○ 2017-12-28 10:12:16
● 2026-02-16 12:15:48
● 2026-04-23 19:33:58
○NSns1.uniregistrymarket.link2017-01-01 → 2017-12-28 · 5 obs
○ 2016-04-21 02:05:20
● 2017-01-01 17:44:22
● 2017-12-28 10:12:16
○ 2026-02-16 12:15:48
○ 2026-04-23 19:33:58
○NSns2.uniregistrymarket.link2017-01-01 → 2017-12-28 · 5 obs
○ 2016-04-21 02:05:20
● 2017-01-01 17:44:22
● 2017-12-28 10:12:16
○ 2026-02-16 12:15:48
○ 2026-04-23 19:33:58
○NSsell.internettraffic.com2015-08-19 → 2016-04-21 · 4 obs
● 2015-08-19 01:06:40
● 2016-04-21 02:05:20
○ 2017-01-01 17:44:22
○ 2026-04-23 19:33:58
●NSyichun.ns.cloudflare.com2026-02-16 → 2026-04-23 · 3 obs
○ 2017-12-28 10:12:16
● 2026-02-16 12:15:48
● 2026-04-23 19:33:58
●MXalt1.aspmx.l.google.com2026-02-16 → 2026-04-23 · 2 obs
● 2026-02-16 12:15:48
● 2026-04-23 19:33:58
●MXalt2.aspmx.l.google.com2026-02-16 → 2026-04-23 · 2 obs
● 2026-02-16 12:15:48
● 2026-04-23 19:33:58
●MXalt3.aspmx.l.google.com2026-02-16 → 2026-04-23 · 2 obs
● 2026-02-16 12:15:48
● 2026-04-23 19:33:58
●MXalt4.aspmx.l.google.com2026-02-16 → 2026-04-23 · 2 obs
● 2026-02-16 12:15:48
● 2026-04-23 19:33:58
●MXaspmx.l.google.com2026-02-16 → 2026-04-23 · 2 obs
● 2026-02-16 12:15:48
● 2026-04-23 19:33:58
●A104.26.10.2392026-02-16 → 2026-04-23 · 3 obs
○ 2017-12-28 10:12:16
● 2026-02-16 12:15:48
● 2026-04-23 19:33:58
●A104.26.11.2392026-02-16 → 2026-04-23 · 3 obs
○ 2017-12-28 10:12:16
● 2026-02-16 12:15:48
● 2026-04-23 19:33:58
●A172.67.73.892026-02-16 → 2026-04-23 · 3 obs
○ 2017-12-28 10:12:16
● 2026-02-16 12:15:48
● 2026-04-23 19:33:58
●A2606:4700:20::681a:aef2026-02-16 → 2026-04-23 · 3 obs
○ 2017-12-28 10:12:16
● 2026-02-16 12:15:48
● 2026-04-23 19:33:58
●A2606:4700:20::681a:bef2026-02-16 → 2026-04-23 · 3 obs
○ 2017-12-28 10:12:16
● 2026-02-16 12:15:48
● 2026-04-23 19:33:58
●A2606:4700:20::ac43:49592026-02-16 → 2026-04-23 · 3 obs
○ 2017-12-28 10:12:16
● 2026-02-16 12:15:48
● 2026-04-23 19:33:58
○A69.172.201.1532016-04-21 → 2017-12-28 · 5 obs
○ 2016-01-18 23:31:38
● 2016-04-21 02:05:20
● 2017-12-28 10:12:16
○ 2026-02-16 12:15:48
○ 2026-04-23 19:33:58
○A69.172.201.2082015-08-19 → 2016-01-18 · 4 obs
● 2015-08-19 01:06:40
● 2016-01-18 23:31:38
○ 2016-04-21 02:05:20
○ 2026-04-23 19:33:58

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
mastering.comgina.ns.cloudflare.com, yichun.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.193.248

NS records: gina.ns.cloudflare.com, yichun.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for mastering.com (unsigned zone)

⏱️ Timing

Total: 216ms | Queries: -

📄 Records

TypeCountSample Data
A3104.26.11.239, 104.26.10.239...
AAAA32606:4700:20::681a:bef, 2606:4700:20::ac43:4959...
NS2gina.ns.cloudflare.com, yichun.ns.cloudflare.com
MX5aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...
TXT6clickfunnels-domain-verification=eWgQze, facebook-domain-verification=jhr3cdiy2hj...
HTTPS1{"priority":1,"target":".","alpn":["h2"]
SOA1gina.ns.cloudflare.com dns.cloudflare.co

📌 Glue Records Collected

Total: 12

Out-of-bailiwick: 12 (gina.ns.cloudflare.com, gina.ns.cloudflare.com, gina.ns.cloudflare.com...)

Analysis

Hierarchy

The parent of courses.mastering.com is mastering.com.

IP Addresses

Six IP numbers are pointed to by mastering.com: 2606:4700:20::681a:aef, 2606:4700:20::681a:bef, 2606:4700:20::ac43:4959, 104.26.10.239, 104.26.11.239 and 172.67.73.89.

Other host names such as m.casinomagiconline.bet.ar, server.cgarsltd.co.uk, pjm.co.at, cattlefax.com and purview.io share IPs with mastering.com.

Name Servers

mastering.com is delegated to two name servers: gina.ns.cloudflare.com and yichun.ns.cloudflare.com.

mastering.com shares the same name server setup as tripper.guide, getstring3.com, mpstdrg010.live, importantquote.com and belle-donne.ch.

mastering.com at least partially shares name servers with other domains, for instance astro-spark.com, bluedisc.com, youdaiioxg.top, moneytree.my and detfi.fr.

these name servers are commonly used with pablo.ns.cloudflare.com, dave.ns.cloudflare.com, betty.ns.cloudflare.com and dana.ns.cloudflare.com.

Host names with six IP numbers:

gina.ns.cloudflare.com points to 2606:4700:50::adf5:3a75, 2803:f800:50::6ca2:c075, 2a06:98c1:50::ac40:2075, 108.162.192.117, 172.64.32.117 and 173.245.58.117.

yichun.ns.cloudflare.com points to 2606:4700:58::adf5:3bf8, 2803:f800:50::6ca2:c1f8, 2a06:98c1:50::ac40:21f8, 108.162.193.248, 172.64.33.248 and 173.245.59.248.

Mail Servers

Five mail servers handle mastering.com: aspmx.l.google.com, alt1.aspmx.l.google.com, alt2.aspmx.l.google.com, alt3.aspmx.l.google.com and alt4.aspmx.l.google.com.

mastering.com shares at least partially some mail servers with other domains, including realeld.com, dratas.lt, genohub.com, sharpe-alpha.com and ns500693.ns500693.ns500699.ns500734.ns500699.ns500734.ns500699.ns500699.ns500699.ns500693.ns500693.ns500699.ns500699.ns500699.ns500693.ns500602.dtrkdll.com.

these mail servers are often used together with mail servers aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx4.googlemail.com and aspmx5.googlemail.com.

Host names with two IP numbers:

Hostname aspmx.l.google.com points to 2607:f8b0:4023:c03::1a and 142.251.2.26.

Hostname alt1.aspmx.l.google.com points to 2800:3f0:4003:c0f::1b and 108.177.123.26.

Hostname alt2.aspmx.l.google.com points to 2a00:1450:400b:c02::1a and 172.253.116.26.

Hostname alt3.aspmx.l.google.com points to 2a00:1450:4009:c0f::1a and 192.178.223.27.

Hostname alt4.aspmx.l.google.com points to 2a00:1450:400c:c00::1b and 173.194.76.26.