postmaster.hackerrankmail.com - dns.ninja
postmaster.hackerrankmail.com
| DNSSEC | ⚠️ Not signed | ||||||
| MX | mxa.mailgun.org ⭐ | ||||||
| A | 34.149.254.5🇺🇸 Google34.148.0.0/14 | ||||||
| PTR | 5.254.149.34.bc.googleusercontent.com | ||||||
| MX | mxb.mailgun.org ⭐ | ||||||
| A | 34.149.254.5🇺🇸 Google34.148.0.0/14 | ||||||
| PTR | 5.254.149.34.bc.googleusercontent.com | ||||||
| TXT | v=spf1 a mx include:spf.mtasv.net include:mailgun.org -all | ||||||
hackerrankmail.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns-1984.awsdns-56.co.uk ⭐ | ||||||
| NS | ns-1169.awsdns-18.org | ||||||
| NS | ns-366.awsdns-45.com | ||||||
| NS | ns-527.awsdns-01.net | ||||||
| MX | mx6.name.com ⭐ | ||||||
| TXT | google-site-verification=zMWsZIRPtMedCm96ZiQxyUu6hvNiceabm0oWwdBU6YM | ||||||
| TXT | v=spf1 include:spf.mtasv.net include:mailgun.org -all | ||||||
| SOA | ns-1984.awsdns-56.co.ukawsdns-hostmaster@amazon.com serial=1 | ||||||
Subdomains
email.postmaster.hackerrankmail.com |
Same first word
Similar names
DNS History
2 records (2 active, 0 former)
●MXmxa.mailgun.org2016-12-28 → 2026-07-05 · 2 obs
● 2026-07-05 08:42:32
●MXmxb.mailgun.org2016-12-28 → 2026-07-05 · 2 obs
● 2026-07-05 08:42:32
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| hackerrankmail.com | ns-527.awsdns-01.net, ns-366.awsdns-45.com, ns-1169.awsdns-18.org, ns-1984.awsdns-56.co.uk | 2 records |
✅ Authoritative Response
Server:205.251.199.192
NS records: ns-527.awsdns-01.net, ns-366.awsdns-45.com, ns-1169.awsdns-18.org, ns-1984.awsdns-56.co.uk
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for hackerrankmail.com (unsigned zone)
⏱️ Timing
Total: 264ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| MX | 2 | mxa.mailgun.org (pri: 10), mxb.mailgun.org (pri: 10) |
| TXT | 1 | v=spf1 a mx include:spf.mtasv.net includ |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-366.awsdns-45.com, ns-366.awsdns-45.com)
Analysis
Hierarchy
postmaster.hackerrankmail.com is a parent domain of email.postmaster.hackerrankmail.com.
Mail Servers
postmaster.hackerrankmail.com is served by two mail servers, mxa.mailgun.org and mxb.mailgun.org.
Among the domains sharing a mail server setup with postmaster.hackerrankmail.com are master-service-appliances.com, becu.monday.com, vonschaumburg.com and two others.
There is at least a partial MX overlap between postmaster.hackerrankmail.com and other domains, including polyakeynez.com, beautythroughscience.com, privetdrive.net and two others.
mxa.mailgun.org and mxb.mailgun.org each point to one IP address — 34.149.254.5.
The host names mxa.mailgun.org and mxb.mailgun.org both resolve to 34.149.254.5 IP addresses.