masteringscom.com - dns.ninja

masteringscom.com

DNSSEC⚠️ Not signed
A2606:4700:3033::ac43:85b1🇺🇸 Cloudflare2606:4700:3033::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A2606:4700:3034::6815:5b3🇺🇸 Cloudflare2606:4700:3034::/48 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A104.21.5.179Cloudflare104.21.0.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
A172.67.133.177🇺🇸 Cloudflare172.67.128.0/20 , Inc. 101 Townsend Street, San Francisco, California 94107, US ✓ In HTTPS hints
NSjo.ns.cloudflare.com ⭐
A2606:4700:50::adf5:3aac🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjo.ns.cloudflare.com
A2803:f800:50::6ca2:c0ac🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRjo.ns.cloudflare.com
A2a06:98c1:50::ac40:20ac🇺🇸 Cloudflare2a06:98c1:50::/45
PTRjo.ns.cloudflare.com
A108.162.192.172🇺🇸 Cloudflare108.162.192.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjo.ns.cloudflare.com
A172.64.32.172🇺🇸 Cloudflare172.64.32.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjo.ns.cloudflare.com
A173.245.58.172🇺🇸 Cloudflare173.245.58.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRjo.ns.cloudflare.com
NSoswald.ns.cloudflare.com
A2606:4700:58::adf5:3bda🇺🇸 Cloudflare2606:4700:50::/44 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRoswald.ns.cloudflare.com
A2803:f800:50::6ca2:c1da🇨🇷 Cloudflare2803:f800:50::/45 LACNIC generated route6 for CloudFlare Latin America S.R.L
PTRoswald.ns.cloudflare.com
A2a06:98c1:50::ac40:21da🇺🇸 Cloudflare2a06:98c1:50::/45
PTRoswald.ns.cloudflare.com
A108.162.193.218🇺🇸 Cloudflare108.162.193.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRoswald.ns.cloudflare.com
A172.64.33.218🇺🇸 Cloudflare172.64.33.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRoswald.ns.cloudflare.com
A173.245.59.218🇺🇸 Cloudflare173.245.59.0/24 , Inc. 101 Townsend Street, San Francisco, California 94107, US
PTRoswald.ns.cloudflare.com
MXmail.bictt.com ⭐
TXTv=spf1 a mx include:bictt.com -all
HTTPSHTTP/3, HTTP/2 ✓ hints match
IPv4 hints104.21.5.179, 172.67.133.177
IPv6 hints2606:4700:3033::ac43:85b1, 2606:4700:3034::6815:5b3
ECHX25519, HKDF-SHA256 + AES-128-GCM draft, id=101, name=cloudflare-ech.com
SOAjo.ns.cloudflare.comdns@cloudflare.com serial=2411137361

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=1785855484

Same first word

masteringscom.com

DNS History

17 records (7 active, 10 former)

20162017201820192020202120222023202420252026NSjo.ns.cloudflare.comoswald.ns.cloudflare.comdns1.name-services.comdns2.name-services.comdns3.name-services.comdns4.name-services.comdns5.name-services.comMXmail.bictt.comA104.21.5.179172.67.133.1772606:4700:3033::ac43:85b12606:4700:3034::6815:5b3188.114.96.0188.114.97.02a06:98c1:3120::2a06:98c1:3121::87.253.158.5
○NSdns1.name-services.com2015-08-11 → 2020-03-27 · 4 obs
● 2015-08-11 09:04:18
● 2020-03-27 03:52:36
○ 2026-04-04 09:38:06
○ 2026-08-04 15:14:20
○NSdns2.name-services.com2015-08-11 → 2020-03-27 · 4 obs
● 2015-08-11 09:04:18
● 2020-03-27 03:52:36
○ 2026-04-04 09:38:06
○ 2026-08-04 15:14:20
○NSdns3.name-services.com2015-08-11 → 2020-03-27 · 4 obs
● 2015-08-11 09:04:18
● 2020-03-27 03:52:36
○ 2026-04-04 09:38:06
○ 2026-08-04 15:14:20
○NSdns4.name-services.com2015-08-11 → 2020-03-27 · 4 obs
● 2015-08-11 09:04:18
● 2020-03-27 03:52:36
○ 2026-04-04 09:38:06
○ 2026-08-04 15:14:20
○NSdns5.name-services.com2015-08-11 → 2020-03-27 · 4 obs
● 2015-08-11 09:04:18
● 2020-03-27 03:52:36
○ 2026-04-04 09:38:06
○ 2026-08-04 15:14:20
●NSjo.ns.cloudflare.com2026-04-04 → 2026-08-04 · 3 obs
○ 2020-03-27 03:52:36
● 2026-04-04 09:38:06
● 2026-08-04 15:14:20
●NSoswald.ns.cloudflare.com2026-04-04 → 2026-08-04 · 3 obs
○ 2020-03-27 03:52:36
● 2026-04-04 09:38:06
● 2026-08-04 15:14:20
●MXmail.bictt.com2015-08-11 → 2026-08-04 · 2 obs
● 2015-08-11 09:04:18
● 2026-08-04 15:14:20
●A104.21.5.1792026-08-04 → 2026-08-04 · 2 obs
○ 2026-04-04 09:38:06
● 2026-08-04 15:14:20
●A172.67.133.1772026-08-04 → 2026-08-04 · 2 obs
○ 2026-04-04 09:38:06
● 2026-08-04 15:14:20
○A188.114.96.02026-04-04 → 2026-04-04 · 3 obs
○ 2020-03-27 03:52:36
● 2026-04-04 09:38:06
○ 2026-08-04 15:14:20
○A188.114.97.02026-04-04 → 2026-04-04 · 3 obs
○ 2020-03-27 03:52:36
● 2026-04-04 09:38:06
○ 2026-08-04 15:14:20
●A2606:4700:3033::ac43:85b12026-08-04 → 2026-08-04 · 2 obs
○ 2026-04-04 09:38:06
● 2026-08-04 15:14:20
●A2606:4700:3034::6815:5b32026-08-04 → 2026-08-04 · 2 obs
○ 2026-04-04 09:38:06
● 2026-08-04 15:14:20
○A2a06:98c1:3120::2026-04-04 → 2026-04-04 · 3 obs
○ 2020-03-27 03:52:36
● 2026-04-04 09:38:06
○ 2026-08-04 15:14:20
○A2a06:98c1:3121::2026-04-04 → 2026-04-04 · 3 obs
○ 2020-03-27 03:52:36
● 2026-04-04 09:38:06
○ 2026-08-04 15:14:20
○A87.253.158.52015-08-11 → 2020-03-27 · 4 obs
● 2015-08-11 09:04:18
● 2020-03-27 03:52:36
○ 2026-04-04 09:38:06
○ 2026-08-04 15:14:20

🔍 DNS Trace

📋 Delegation Chain

ZoneNameserversGlue
coma.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net...-
masteringscom.comoswald.ns.cloudflare.com, jo.ns.cloudflare.com12 records

✅ Authoritative Response

Server:108.162.193.218

NS records: oswald.ns.cloudflare.com, jo.ns.cloudflare.com

🔒 DNSSEC Status

⚠️ Insecure (no DNSSEC)

No DS record for masteringscom.com (unsigned zone)

⏱️ Timing

Total: 147ms | Queries: -

📄 Records

TypeCountSample Data
A2172.67.133.177, 104.21.5.179
AAAA22606:4700:3034::6815:5b3, 2606:4700:3033::ac43:85b1
NS2jo.ns.cloudflare.com, oswald.ns.cloudflare.com
MX1mail.bictt.com (pri: 10)
TXT1v=spf1 a mx include:bictt.com -all
HTTPS1{"priority":1,"target":".","alpn":["h3",
SOA1jo.ns.cloudflare.com dns.cloudflare.com

📌 Glue Records Collected

Total: 12

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

Analysis

IP Addresses

masteringscom.com points to the four IP addresses 104.21.5.179, 172.67.133.177, 2606:4700:3033::ac43:85b1 and 2606:4700:3034::6815:5b3.

humoretc.com.cdn.cloudflare.net, lys925.com, shntt.com plus two other host names have IP numbers in common with masteringscom.com.

Name Servers

masteringscom.com has two authoritative name servers — jo.ns.cloudflare.com and oswald.ns.cloudflare.com.

The name server configuration of masteringscom.com is shared with other domains, for instance wisebusiness.edu.vn, topqore.com, samer-c.com and two others.

There is at least partial name server overlap between masteringscom.com and other domains — gokao.net, kuma6.com, ikushio.info and two more among them.

These name servers frequently co-occur with the name servers clayton.ns.cloudflare.com and mark.ns.cloudflare.com.

Hosts with 6 IP addresses each:

jo.ns.cloudflare.com points to 108.162.192.172, 172.64.32.172, 173.245.58.172 and 3 other IP addresses.

oswald.ns.cloudflare.com points to 108.162.193.218, 172.64.33.218, 173.245.59.218 and 3 other IP addresses.

Mail Servers

masteringscom.com uses one mail server — mail.bictt.com.