algorithm-class.org - dns.ninja
algorithm-class.org
| DNSSEC | ⚠️ Not signed | ||||||
| A | 23.23.181.85🇺🇸 Amazon23.22.0.0/15 EC2 IAD prefix | ||||||
| PTR | ec2-23-23-181-85.compute-1.amazonaws.com | ||||||
| NS | ns-90.awsdns-11.com ⭐ | ||||||
| A | 2600:9000:5300:5a00::1🇺🇸 Amazon2600:9000:5300::/48 - CloudFront | ||||||
| PTR | ns-90.awsdns-11.com | ||||||
| A | 205.251.192.90🇺🇸 Amazon205.251.192.0/24 prefix | ||||||
| PTR | ns-90.awsdns-11.com | ||||||
| NS | ns-1423.awsdns-49.org | ||||||
| A | 2600:9000:5305:8f00::1🇺🇸 Amazon2600:9000:5305::/48 - CloudFront | ||||||
| PTR | ns-1423.awsdns-49.org | ||||||
| A | 205.251.197.143🇺🇸 Amazon205.251.197.0/24 prefix | ||||||
| PTR | ns-1423.awsdns-49.org | ||||||
| NS | ns-2023.awsdns-60.co.uk | ||||||
| A | 2600:9000:5307:e700::1🇺🇸 Amazon2600:9000:5307::/48 - CloudFront | ||||||
| PTR | ns-2023.awsdns-60.co.uk | ||||||
| A | 205.251.199.231🇺🇸 Amazon205.251.199.0/24 prefix | ||||||
| PTR | ns-2023.awsdns-60.co.uk | ||||||
| NS | ns-555.awsdns-05.net | ||||||
| A | 2600:9000:5302:2b00::1🇺🇸 Amazon2600:9000:5302::/48 - CloudFront | ||||||
| PTR | ns-555.awsdns-05.net | ||||||
| A | 205.251.194.43🇺🇸 Amazon205.251.194.0/24 prefix | ||||||
| PTR | ns-555.awsdns-05.net | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | ns-90.awsdns-11.comawsdns-hostmaster@amazon.com serial=1 | ||||||
org
| DNSSEC | 🔒 Signed (DS record present) | ||||||
| NS | a0.org.afilias-nst.info ⭐ ⚠️ Not in parent delegation | ||||||
| NS | a2.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | b0.org.afilias-nst.org | ||||||
| NS | b2.org.afilias-nst.org | ||||||
| NS | c0.org.afilias-nst.info ⚠️ Not in parent delegation | ||||||
| NS | d0.org.afilias-nst.org | ||||||
| SOA | a0.org.afilias-nst.infohostmaster@donuts.email serial=1789043652 | ||||||
Same first word
algorithm-class.com |
algorithm-class.org |
Similar names
Previous names
Next names
DNS History
7 records (5 active, 2 former)
●NSns-1423.awsdns-49.org2026-08-27 → 2026-09-10 · 3 obs
● 2026-08-27 17:58:12
● 2026-09-10 13:23:36
●NSns-2023.awsdns-60.co.uk2026-08-27 → 2026-09-10 · 3 obs
● 2026-08-27 17:58:12
● 2026-09-10 13:23:36
●NSns-555.awsdns-05.net2026-08-27 → 2026-09-10 · 3 obs
● 2026-08-27 17:58:12
● 2026-09-10 13:23:36
●NSns-90.awsdns-11.com2026-08-27 → 2026-09-10 · 3 obs
● 2026-08-27 17:58:12
● 2026-09-10 13:23:36
○NSns73.domaincontrol.com2015-07-04 → 2017-04-07 · 4 obs
● 2017-04-07 00:40:06
○ 2026-08-27 17:58:12
○ 2026-09-10 13:23:36
○NSns74.domaincontrol.com2015-07-04 → 2017-04-07 · 4 obs
● 2017-04-07 00:40:06
○ 2026-08-27 17:58:12
○ 2026-09-10 13:23:36
●A23.23.181.852015-07-04 → 2026-09-10 · 2 obs
● 2026-09-10 13:23:36
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| org | b0.org.afilias-nst.org, d0.org.afilias-nst.org, b2.org.afilias-nst.org | - |
| algorithm-class.org | ns-90.awsdns-11.com, ns-1423.awsdns-49.org, ns-555.awsdns-05.net, ns-2023.awsdns-60.co.uk | 2 records |
✅ Authoritative Response
Server:205.251.194.43
NS records: ns-90.awsdns-11.com, ns-1423.awsdns-49.org, ns-555.awsdns-05.net, ns-2023.awsdns-60.co.uk
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for algorithm-class.org (unsigned zone)
⏱️ Timing
Total: 723ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 23.23.181.85 |
| NS | 4 | ns-1423.awsdns-49.org, ns-2023.awsdns-60.co.uk... |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | ns-90.awsdns-11.com awsdns-hostmaster.am |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-1423.awsdns-49.org, ns-1423.awsdns-49.org)
Analysis
IP Addresses
algorithm-class.org resolves to one IP address: 23.23.181.85.
anatomy-class.org, artificialintelligence-class.com, coursera.email and two other host names share IP numbers with algorithm-class.org.
Name Servers
The authoritative name servers for algorithm-class.org are ns-90.awsdns-11.com, ns-555.awsdns-05.net, ns-1423.awsdns-49.org and ns-2023.awsdns-60.co.uk.
algorithm-class.org has at least partial name server overlap with other domains, such as matsusakawel.com, d3vmxkbcuiv0u1.cloudfront.net, d51kvxznt2q0d.cloudfront.net and two others.
ns-90.awsdns-11.com, ns-555.awsdns-05.net, ns-1423.awsdns-49.org and ns-2023.awsdns-60.co.uk all point to exactly two IP numbers each: ns-90.awsdns-11.com → 205.251.192.90 and 2600:9000:5300:5a00::1; ns-555.awsdns-05.net → 205.251.194.43 and 2600:9000:5302:2b00::1; ns-1423.awsdns-49.org → 205.251.197.143 and 2600:9000:5305:8f00::1; ns-2023.awsdns-60.co.uk → 205.251.199.231 and 2600:9000:5307:e700::1.