hackerrank.io - dns.ninja
hackerrank.io
io
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.nic.io ⭐ | ||||||
| NS | a2.nic.io | ||||||
| NS | b0.nic.io | ||||||
| NS | c0.nic.io | ||||||
| SOA | a0.nic.iohostmaster@donuts.email serial=1782057391 | ||||||
Same first word
Similar names
DNS History
10 records (10 active, 0 former)
●NSns-1048.awsdns-03.org2018-05-08 → 2026-06-21 · 2 obs
● 2026-06-21 16:17:14
●NSns-1690.awsdns-19.co.uk2018-05-08 → 2026-06-21 · 2 obs
● 2026-06-21 16:17:14
●NSns-641.awsdns-16.net2018-05-08 → 2026-06-21 · 2 obs
● 2026-06-21 16:17:14
●NSns-80.awsdns-10.com2018-05-08 → 2026-06-21 · 2 obs
● 2026-06-21 16:17:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| io | a0.nic.io, a2.nic.io, b0.nic.io, c0.nic.io | - |
| hackerrank.io | ns-80.awsdns-10.com, ns-641.awsdns-16.net, ns-1048.awsdns-03.org, ns-1690.awsdns-19.co.uk | - |
✅ Authoritative Response
Server:205.251.196.24
NS records: ns-80.awsdns-10.com, ns-641.awsdns-16.net, ns-1048.awsdns-03.org, ns-1690.awsdns-19.co.uk
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for hackerrank.io (unsigned zone)
⏱️ Timing
Total: 704ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | ns-1048.awsdns-03.org, ns-1690.awsdns-19.co.uk... |
| MX | 6 | mx6.name.com (pri: 10), mx4.name.com (pri: 20)... |
| TXT | 2 | google-site-verification=71LTAgSs1rzsPX-, v=spf1 a mx -all |
| SOA | 1 | ns-1690.awsdns-19.co.uk awsdns-hostmaste |
Analysis
Name Servers
The domain hackerrank.io is delegated to these four name servers: ns-80.awsdns-10.com, ns-641.awsdns-16.net, ns-1048.awsdns-03.org and ns-1690.awsdns-19.co.uk.
There is at least partial name server overlap between hackerrank.io and other domains — abytriss.com, medipharmhealth.co.kr, d-w-g.de and two more among them.
The name servers ns-869.awsdns-44.net, ns-1496.awsdns-59.org and ns-1892.awsdns-44.co.uk are often found in combination with these name servers.
All four hostnames — ns-80.awsdns-10.com, ns-641.awsdns-16.net, ns-1048.awsdns-03.org and ns-1690.awsdns-19.co.uk — resolve to two IP numbers apiece: ns-80.awsdns-10.com to 205.251.192.80 and 2600:9000:5300:5000::1; ns-641.awsdns-16.net to 205.251.194.129 and 2600:9000:5302:8100::1; ns-1048.awsdns-03.org to 205.251.196.24 and 2600:9000:5304:1800::1; ns-1690.awsdns-19.co.uk to 205.251.198.154 and 2600:9000:5306:9a00::1.
Mail Servers
hackerrank.io accepts email via 6 mail servers: mx3.name.com, mx4.name.com, mx5.name.com and 3 other.
hackerrank.io shares at least some of its mail servers with other domains — for example metaprose.com, ivanov.solutions, worldexpomuseum.com and two more.
These mail servers are routinely found in combination with the mail servers mx7.name.com, mx8.name.com and mx6.name.com.
Hosts that resolve to one IP address:
The hostname mx3.name.com resolves to 173.192.7.98.
The hostname mx4.name.com resolves to 173.192.7.99.
The hostname mx5.name.com resolves to 173.192.7.100.
The hostname mx6.name.com resolves to 173.192.7.101.
The hostname mx7.name.com resolves to 173.192.7.102.
The hostname mx8.name.com resolves to 173.192.7.103.