mastery.com - dns.ninja
mastery.com
com
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a.gtld-servers.net ⭐ | ||||||
| NS | b.gtld-servers.net | ||||||
| NS | c.gtld-servers.net | ||||||
| NS | d.gtld-servers.net | ||||||
| NS | e.gtld-servers.net | ||||||
| NS | f.gtld-servers.net | ||||||
| NS | g.gtld-servers.net | ||||||
| NS | h.gtld-servers.net | ||||||
| NS | i.gtld-servers.net | ||||||
| NS | j.gtld-servers.net | ||||||
| NS | k.gtld-servers.net | ||||||
| NS | l.gtld-servers.net | ||||||
| NS | m.gtld-servers.net | ||||||
| SOA | a.gtld-servers.netnstld@verisign-grs.com serial=1784338277 | ||||||
Subdomains
mail.mastery.com |
Same first word
Similar names
DNS History
15 records (10 active, 5 former)
●NSns-1309.awsdns-35.org2018-07-15 → 2026-07-18 · 3 obs
● 2018-07-15 16:33:08
● 2026-07-18 01:49:04
●NSns-1581.awsdns-05.co.uk2018-07-15 → 2026-07-18 · 3 obs
● 2018-07-15 16:33:08
● 2026-07-18 01:49:04
●NSns-451.awsdns-56.com2018-07-15 → 2026-07-18 · 3 obs
● 2018-07-15 16:33:08
● 2026-07-18 01:49:04
●NSns-884.awsdns-46.net2018-07-15 → 2026-07-18 · 3 obs
● 2018-07-15 16:33:08
● 2026-07-18 01:49:04
○NSpdns01.domaincontrol.com2015-05-24 → 2017-01-12 · 4 obs
● 2017-01-12 22:52:30
○ 2018-07-15 16:33:08
○ 2026-07-18 01:49:04
○NSpdns02.domaincontrol.com2015-05-24 → 2017-01-12 · 4 obs
● 2017-01-12 22:52:30
○ 2018-07-15 16:33:08
○ 2026-07-18 01:49:04
●MXalt1.aspmx.l.google.com2015-05-24 → 2026-07-18 · 2 obs
● 2026-07-18 01:49:04
●MXalt2.aspmx.l.google.com2015-05-24 → 2026-07-18 · 2 obs
● 2026-07-18 01:49:04
●MXaspmx.l.google.com2015-05-24 → 2026-07-18 · 2 obs
● 2026-07-18 01:49:04
●MXaspmx2.googlemail.com2015-05-24 → 2026-07-18 · 2 obs
● 2026-07-18 01:49:04
●MXaspmx3.googlemail.com2015-05-24 → 2026-07-18 · 2 obs
● 2026-07-18 01:49:04
●A162.159.134.422026-03-25 → 2026-07-18 · 3 obs
● 2026-03-25 05:50:20
● 2026-07-18 01:49:04
○A198.65.98.2252015-05-24 → 2017-01-12 · 4 obs
● 2017-01-12 22:52:30
○ 2018-07-15 16:33:08
○ 2026-07-18 01:49:04
○A34.196.128.152018-07-15 → 2018-07-15 · 4 obs
● 2018-07-15 16:33:08
○ 2026-03-25 05:50:20
○ 2026-07-18 01:49:04
○A54.87.15.452018-07-15 → 2018-07-15 · 4 obs
● 2018-07-15 16:33:08
○ 2026-03-25 05:50:20
○ 2026-07-18 01:49:04
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| mastery.com | ns-451.awsdns-56.com, ns-884.awsdns-46.net, ns-1581.awsdns-05.co.uk, ns-1309.awsdns-35.org | 2 records |
✅ Authoritative Response
Server:205.251.195.116
NS records: ns-451.awsdns-56.com, ns-884.awsdns-46.net, ns-1581.awsdns-05.co.uk, ns-1309.awsdns-35.org
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for mastery.com (unsigned zone)
⏱️ Timing
Total: 1075ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 162.159.134.42 |
| NS | 4 | ns-1309.awsdns-35.org, ns-1581.awsdns-05.co.uk... |
| MX | 5 | aspmx.l.google.com (pri: 10), alt1.aspmx.l.google.com (pri: 20)... |
| TXT | 9 | 283fxhjhq5h4qbqbs2ypc3s2m295cn9c, brevo-code:a4bcf261e07d0548bab76e4420cb4... |
| SOA | 1 | ns-451.awsdns-56.com awsdns-hostmaster.a |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-451.awsdns-56.com, ns-451.awsdns-56.com)
Analysis
Hierarchy
mastery.com serves as the parent of mail.mastery.com.
IP Addresses
mastery.com resolves to one IP address: 162.159.134.42.
smithsbeachresort.com.au, peterstownshippa.com, italiainformatica.com and two other host names share IP numbers with mastery.com.
Name Servers
The authoritative name servers for mastery.com are ns-451.awsdns-56.com, ns-884.awsdns-46.net, ns-1309.awsdns-35.org and ns-1581.awsdns-05.co.uk.
mastery.com has at least partial name server overlap with other domains, such as d2el8g1sy812l4.cloudfront.net, midgetmadness.com, pinetrk.com and two others.
ns-451.awsdns-56.com, ns-884.awsdns-46.net, ns-1309.awsdns-35.org and ns-1581.awsdns-05.co.uk all point to exactly two IP numbers each: ns-451.awsdns-56.com → 205.251.193.195 and 2600:9000:5301:c300::1; ns-884.awsdns-46.net → 205.251.195.116 and 2600:9000:5303:7400::1; ns-1309.awsdns-35.org → 205.251.197.29 and 2600:9000:5305:1d00::1; ns-1581.awsdns-05.co.uk → 205.251.198.45 and 2600:9000:5306:2d00::1.
Mail Servers
mastery.com is handled by five mail servers: aspmx2.googlemail.com, aspmx3.googlemail.com, aspmx.l.google.com and two others.
mastery.com has at least partial mail server overlap with other domains such as godealergo.com, avfcorp.com, gzblog.it and two more.
These mail servers commonly co-occur with mail servers alt2.aspmx.l.google.com, alt1.aspmx.l.google.com, alt3.aspmx.l.google.com and 3 others.
Hostnames that resolve to two IP addresses:
aspmx2.googlemail.com resolves to 108.177.123.27 and 2800:3f0:4003:c0f::1b.
aspmx3.googlemail.com resolves to 172.253.116.27 and 2a00:1450:400b:c02::1b.
aspmx.l.google.com resolves to 142.251.111.26 and 2607:f8b0:4004:c1d::1b.
alt1.aspmx.l.google.com resolves to 108.177.123.27 and 2800:3f0:4003:c0f::1b.
alt2.aspmx.l.google.com resolves to 172.253.116.27 and 2a00:1450:400b:c02::1b.
The host names aspmx2.googlemail.com and alt1.aspmx.l.google.com both resolve to 2800:3f0:4003:c0f::1b IP addresses.
The host names aspmx2.googlemail.com and alt1.aspmx.l.google.com both resolve to 108.177.123.27 IP addresses.
The host names aspmx3.googlemail.com and alt2.aspmx.l.google.com both resolve to 2a00:1450:400b:c02::1b IP addresses.
The host names aspmx3.googlemail.com and alt2.aspmx.l.google.com both resolve to 172.253.116.27 IP addresses.