masterclasssolutions.com - robtex.com

masterclasssolutions.com

DNSSEC⚠️ Not signed
A2606:4700:3033::6815:5177🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3037::ac43:bd52🇺🇸 Cloudflare2606:4700:3037::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.81.119Cloudflare104.21.80.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.189.82🇺🇸 Cloudflare172.67.176.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSkarsyn.ns.cloudflare.com ⭐
A2606:4700:50::a29f:26c2🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkarsyn.ns.cloudflare.com
A2803:f800:50::6ca2:c2c2🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRkarsyn.ns.cloudflare.com
A2a06:98c1:50::ac40:22c2🇺🇸 Cloudflare2a06:98c1:50::/45
PTRkarsyn.ns.cloudflare.com
A108.162.194.194🇺🇸 Cloudflare108.162.194.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkarsyn.ns.cloudflare.com
A162.159.38.194Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkarsyn.ns.cloudflare.com
A172.64.34.194🇺🇸 Cloudflare172.64.34.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRkarsyn.ns.cloudflare.com
NSolof.ns.cloudflare.com
A2606:4700:58::a29f:2c33🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRolof.ns.cloudflare.com
A2803:f800:50::6ca2:c333🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRolof.ns.cloudflare.com
A2a06:98c1:50::ac40:2333🇺🇸 Cloudflare2a06:98c1:50::/45
PTRolof.ns.cloudflare.com
A108.162.195.51🇺🇸 Cloudflare108.162.195.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRolof.ns.cloudflare.com
A162.159.44.51Cloudflare162.159.32.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRolof.ns.cloudflare.com
A172.64.35.51🇺🇸 Cloudflare172.64.35.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRolof.ns.cloudflare.com
MXaspmx.l.google.com ⭐
A2607:f8b0:4004:c19::1b🇺🇸 Google2607:f8b0:4004::/48
PTRbk-in-f27.1e100.net
A172.253.62.27🇺🇸 Google172.253.62.0/24
PTRbc-in-f27.1e100.net
MXalt1.aspmx.l.google.com(5)
A2607:f8b0:4003:c30::1b🇺🇸 Google2607:f8b0:4003::/48
PTRyutulis-in-f27.1e100.net
A74.125.27.26🇺🇸 Google74.125.27.0/24
PTRyutulis-in-f26.1e100.net
MXalt2.aspmx.l.google.com(5)
A2607:f8b0:4001:c70::1a🇺🇸 Google2607:f8b0:4001::/48
PTRyucbful-in-f26.1e100.net
A192.178.209.26🇺🇸 Google192.178.209.0/24
PTRyucbful-in-f26.1e100.net
MXalt3.aspmx.l.google.com(10)
A2607:f8b0:4024:c0d::1b🇺🇸 Google2607:f8b0::/32
PTRmj-in-f27.1e100.net
A192.178.152.26🇺🇸 Google192.178.152.0/24
PTRmj-in-f26.1e100.net
MXalt4.aspmx.l.google.com(10)
A2607:f8b0:4023:403::1a🇺🇸 Google2607:f8b0::/32
PTRgg-in-f26.1e100.net
A142.250.96.27🇺🇸 Google142.250.96.0/24
PTRgg-in-f27.1e100.net
TXTgoogle-site-verification=VC7hxbjX0eKfiAKAuPHkaNzPz3P19FTbVKDNBu3_3Og
TXTv=spf1 include:_spf.google.com -all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4104.21.81.119, 172.67.189.82
IPv62606:4700:3033::6815:5177, 2606:4700:3037::ac43:bd52
SOAkarsyn.ns.cloudflare.comdns@cloudflare.com serial=2397222603

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=1771291435

Same first word

masterclasssolutions.com

DNS History

15 records (11 active, 4 former)

NSkarsyn.ns.cloudflare.comolof.ns.cloudflare.comMXalt1.aspmx.l.google.comalt2.aspmx.l.google.comalt3.aspmx.l.google.comalt4.aspmx.l.google.comaspmx.l.google.comA104.21.81.119172.67.189.822606:4700:3033::6815:51772606:4700:3037::ac43:bd52188.114.96.0188.114.97.02a06:98c1:3120::2a06:98c1:3121::
●NSkarsyn.ns.cloudflare.com2026-02-16 → 2026-03-23 · 2 obs
● 2026-02-16 07:09:36
● 2026-03-23 03:29:04
●NSolof.ns.cloudflare.com2026-02-16 → 2026-03-23 · 2 obs
● 2026-02-16 07:09:36
● 2026-03-23 03:29:04
●MXalt1.aspmx.l.google.com2026-02-16 → 2026-03-23 · 2 obs
● 2026-02-16 07:09:36
● 2026-03-23 03:29:04
●MXalt2.aspmx.l.google.com2026-02-16 → 2026-03-23 · 2 obs
● 2026-02-16 07:09:36
● 2026-03-23 03:29:04
●MXalt3.aspmx.l.google.com2026-02-16 → 2026-03-23 · 2 obs
● 2026-02-16 07:09:36
● 2026-03-23 03:29:04
●MXalt4.aspmx.l.google.com2026-02-16 → 2026-03-23 · 2 obs
● 2026-02-16 07:09:36
● 2026-03-23 03:29:04
●MXaspmx.l.google.com2026-02-16 → 2026-03-23 · 2 obs
● 2026-02-16 07:09:36
● 2026-03-23 03:29:04
●A104.21.81.1192026-02-16 → 2026-03-23 · 5 obs
● 2026-02-16 07:09:36
● 2026-03-02 14:53:24
○ 2026-03-03 10:51:40
● 2026-03-08 23:53:16
● 2026-03-23 03:29:04
●A172.67.189.822026-02-16 → 2026-03-23 · 5 obs
● 2026-02-16 07:09:36
● 2026-03-02 14:53:24
○ 2026-03-03 10:51:40
● 2026-03-08 23:53:16
● 2026-03-23 03:29:04
○A188.114.96.02026-03-03 → 2026-03-03 · 4 obs
○ 2026-03-02 14:53:24
● 2026-03-03 10:51:40
○ 2026-03-08 23:53:16
○ 2026-03-23 03:29:04
○A188.114.97.02026-03-03 → 2026-03-03 · 4 obs
○ 2026-03-02 14:53:24
● 2026-03-03 10:51:40
○ 2026-03-08 23:53:16
○ 2026-03-23 03:29:04
●A2606:4700:3033::6815:51772026-02-16 → 2026-03-23 · 5 obs
● 2026-02-16 07:09:36
● 2026-03-02 14:53:24
○ 2026-03-03 10:51:40
● 2026-03-08 23:53:16
● 2026-03-23 03:29:04
●A2606:4700:3037::ac43:bd522026-02-16 → 2026-03-23 · 5 obs
● 2026-02-16 07:09:36
● 2026-03-02 14:53:24
○ 2026-03-03 10:51:40
● 2026-03-08 23:53:16
● 2026-03-23 03:29:04
○A2a06:98c1:3120::2026-03-03 → 2026-03-03 · 4 obs
○ 2026-03-02 14:53:24
● 2026-03-03 10:51:40
○ 2026-03-08 23:53:16
○ 2026-03-23 03:29:04
○A2a06:98c1:3121::2026-03-03 → 2026-03-03 · 4 obs
○ 2026-03-02 14:53:24
● 2026-03-03 10:51:40
○ 2026-03-08 23:53:16
○ 2026-03-23 03:29:04

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
comm.gtld-servers.net, a.gtld-servers.net, f.gtld-servers.net, e.gtld-servers.net...-
masterclasssolutions.comkarsyn.ns.cloudflare.com, olof.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.195.51

NS records: karsyn.ns.cloudflare.com, olof.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for masterclasssolutions.com (unsigned zone)

⏱️ Timing

Total: 217ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.189.82, 104.21.81.119
AAAA22606:4700:3037::ac43:bd52, 2606:4700:3033::6815:5177
NS2karsyn.ns.cloudflare.com, olof.ns.cloudflare.com
MX5aspmx.l.google.com (pri: 1), alt3.aspmx.l.google.com (pri: 10)...
TXT2google-site-verification=VC7hxbjX0eKfiAK, v=spf1 include:_spf.google.com -all
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1karsyn.ns.cloudflare.com dns.cloudflare.

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

masterclasssolutions.com resolves to four IPs: 2606:4700:3033::6815:5177, 2606:4700:3037::ac43:bd52, 104.21.81.119 and 172.67.189.82.

Other host names, for instance lien.finance, ns7.pptechnology.cc, hzzcgsw.cn, banaterra.eu and decodedscience.org share IP numbers with masterclasssolutions.com.

Name Servers

masterclasssolutions.com has two name servers: karsyn.ns.cloudflare.com and olof.ns.cloudflare.com.

masterclasssolutions.com shares the same name server setup as other domains, for example clarioflow.com, searchtango.com, crystaljulia.com, openaline.com and clariohub.com.

masterclasssolutions.com shares some name servers with other domains, for example 667691.com, mollyscupcakeswestloop.com, undofen.pl, wbaoda.com and 993311.cc.

These name servers are commonly used with anuj.ns.cloudflare.com, sean.ns.cloudflare.com, kianchau.ns.cloudflare.com, lara.ns.cloudflare.com and braden.ns.cloudflare.com.

Host names with six IP numbers: karsyn.ns.cloudflare.com points to: 2606:4700:50::a29f:26c2, 2803:f800:50::6ca2:c2c2, 2a06:98c1:50::ac40:22c2, 108.162.194.194, 162.159.38.194 and 172.64.34.194; olof.ns.cloudflare.com points to: 2606:4700:58::a29f:2c33, 2803:f800:50::6ca2:c333, 2a06:98c1:50::ac40:2333, 108.162.195.51, 162.159.44.51 and 172.64.35.51.

Mail Servers

masterclasssolutions.com is handled by five mail servers: 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.

masterclasssolutions.com shares some mail servers with other domains, at least partially; for instance ns500698.ns500759.ns500759.ns500736.ns500736.ns500735.ns500735.ns500698.ns500698.ns500708.ns500698.ns500576.ns500686.ns500576.ns500619.ns500576.trackreceptor.com, ns500758.ns500758.ns500758.ns500758.ns500735.ns500735.ns500735.ns500698.ns500576.ns500698.ns500698.ns500686.ns500576.ns500576.trackreceptor.com, ns500698.ns500759.ns500698.ns500698.ns500736.ns500735.ns500736.ns500735.ns500698.ns500736.ns500708.ns500576.ns500698.ns500698.ns500698.ns500619.ns500619.trackreceptor.com, ns500734.ns500693.ns500693.ns500693.ns500699.ns500734.ns500734.ns500588.ns500699.ns500683.ns500632.ns500683.ns500632.ns500632.ns500612.dtrkdll.com and 4tstudios.com.

these mail servers are commonly used alongside aspmx2.googlemail.com and aspmx3.googlemail.com.

Host names with two IPs:

Host aspmx.l.google.com has IPs 2607:f8b0:4004:c19::1b and 172.253.62.27.

Host alt1.aspmx.l.google.com has IPs 2607:f8b0:4003:c30::1b and 74.125.27.26.

Host alt2.aspmx.l.google.com has IPs 2607:f8b0:4001:c70::1a and 192.178.209.26.

Host alt3.aspmx.l.google.com has IPs 2607:f8b0:4024:c0d::1b and 192.178.152.26.

Host alt4.aspmx.l.google.com has IPs 2607:f8b0:4023:403::1a and 142.250.96.27.