algorithm-challenge.com - dns.ninja
algorithm-challenge.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 199.36.158.100🇺🇸 Fastly199.36.158.0/24 Google | ||||||
| NS | ns-766.awsdns-31.net ⭐ | ||||||
| A | 2600:9000:5302:fe00::1🇺🇸 Amazon2600:9000:5302::/48 - CloudFront | ||||||
| PTR | ns-766.awsdns-31.net | ||||||
| A | 205.251.194.254🇺🇸 Amazon205.251.194.0/24 prefix | ||||||
| PTR | ns-766.awsdns-31.net | ||||||
| NS | ns-1243.awsdns-27.org | ||||||
| A | 2600:9000:5304:db00::1🇺🇸 Amazon2600:9000:5304::/48 - CloudFront | ||||||
| PTR | ns-1243.awsdns-27.org | ||||||
| A | 205.251.196.219🇺🇸 Amazon205.251.196.0/24 prefix | ||||||
| PTR | ns-1243.awsdns-27.org | ||||||
| NS | ns-1949.awsdns-51.co.uk | ||||||
| A | 2600:9000:5307:9d00::1🇺🇸 Amazon2600:9000:5307::/48 - CloudFront | ||||||
| PTR | ns-1949.awsdns-51.co.uk | ||||||
| A | 205.251.199.157🇺🇸 Amazon205.251.199.0/24 prefix | ||||||
| PTR | ns-1949.awsdns-51.co.uk | ||||||
| NS | ns-493.awsdns-61.com | ||||||
| A | 2600:9000:5301:ed00::1🇺🇸 Amazon2600:9000:5301::/48 - CloudFront | ||||||
| PTR | ns-493.awsdns-61.com | ||||||
| A | 205.251.193.237🇺🇸 Amazon205.251.193.0/24 prefix | ||||||
| PTR | ns-493.awsdns-61.com | ||||||
| TXT | hosting-site=algo-challenge-4 | ||||||
| SOA | ns-766.awsdns-31.netawsdns-hostmaster@amazon.com serial=1 | ||||||
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=1788743608 | ||||||
Same first word
algorithm-challenge.com |
Previous names
Next names
DNS History
5 records (5 active, 0 former)
●NSns-1243.awsdns-27.org2026-08-26 → 2026-09-07 · 2 obs
● 2026-09-07 01:21:40
●NSns-1949.awsdns-51.co.uk2026-08-26 → 2026-09-07 · 2 obs
● 2026-09-07 01:21:40
●NSns-493.awsdns-61.com2026-08-26 → 2026-09-07 · 2 obs
● 2026-09-07 01:21:40
●NSns-766.awsdns-31.net2026-08-26 → 2026-09-07 · 2 obs
● 2026-09-07 01:21:40
●A199.36.158.1002026-08-26 → 2026-09-07 · 2 obs
● 2026-09-07 01:21:40
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | g.gtld-servers.net, l.gtld-servers.net, e.gtld-servers.net, j.gtld-servers.net... | - |
| algorithm-challenge.com | ns-766.awsdns-31.net, ns-493.awsdns-61.com, ns-1243.awsdns-27.org, ns-1949.awsdns-51.co.uk | 2 records |
✅ Authoritative Response
Server:205.251.194.254
NS records: ns-766.awsdns-31.net, ns-493.awsdns-61.com, ns-1243.awsdns-27.org, ns-1949.awsdns-51.co.uk
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for algorithm-challenge.com (unsigned zone)
⏱️ Timing
Total: 1375ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 199.36.158.100 |
| NS | 4 | ns-1243.awsdns-27.org, ns-1949.awsdns-51.co.uk... |
| TXT | 1 | hosting-site=algo-challenge-4 |
| SOA | 1 | ns-766.awsdns-31.net awsdns-hostmaster.a |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-493.awsdns-61.com, ns-493.awsdns-61.com)
Analysis
IP Addresses
algorithm-challenge.com resolves to just one IP address, 199.36.158.100.
Two other host names, along with tapntrak.net, woodrowent.com and athbase.com, also share IP numbers with algorithm-challenge.com.
Name Servers
The NS records for algorithm-challenge.com point to four name servers: ns-493.awsdns-61.com, ns-766.awsdns-31.net, ns-1243.awsdns-27.org and ns-1949.awsdns-51.co.uk.
There is at least partial name server overlap between algorithm-challenge.com and other domains — 199.211.34.in-addr.arpa, aknir.jp, 183.226.44.in-addr.arpa and two more among them.
These name servers tend to appear in combination with the name servers ns1-24-us-west-2.ec2-rdns.amazonaws.com, ns2-24-us-west-2.ec2-rdns.amazonaws.com, ns3-24-us-west-2.ec2-rdns.amazonaws.com and ns4-24-us-west-2.ec2-rdns.amazonaws.com.
All four hostnames — ns-493.awsdns-61.com, ns-766.awsdns-31.net, ns-1243.awsdns-27.org and ns-1949.awsdns-51.co.uk — resolve to two IP numbers apiece: ns-493.awsdns-61.com to 205.251.193.237 and 2600:9000:5301:ed00::1; ns-766.awsdns-31.net to 205.251.194.254 and 2600:9000:5302:fe00::1; ns-1243.awsdns-27.org to 205.251.196.219 and 2600:9000:5304:db00::1; ns-1949.awsdns-51.co.uk to 205.251.199.157 and 2600:9000:5307:9d00::1.