modelthinking-class.com - dns.ninja
modelthinking-class.com
| DNSSEC | ⚠️ Not signed | ||||||
| A | 107.22.230.10🇺🇸 Amazon107.22.0.0/16 EC2 IAD prefix | ||||||
| PTR | ec2-107-22-230-10.compute-1.amazonaws.com | ||||||
| NS | ns-1995.awsdns-57.co.uk ⭐ | ||||||
| A | 2600:9000:5307:cb00::1🇺🇸 Amazon2600:9000:5307::/48 - CloudFront | ||||||
| PTR | ns-1995.awsdns-57.co.uk | ||||||
| A | 205.251.199.203🇺🇸 Amazon205.251.199.0/24 prefix | ||||||
| PTR | ns-1995.awsdns-57.co.uk | ||||||
| NS | ns-1261.awsdns-29.org | ||||||
| A | 2600:9000:5304:ed00::1🇺🇸 Amazon2600:9000:5304::/48 - CloudFront | ||||||
| PTR | ns-1261.awsdns-29.org | ||||||
| A | 205.251.196.237🇺🇸 Amazon205.251.196.0/24 prefix | ||||||
| PTR | ns-1261.awsdns-29.org | ||||||
| NS | ns-203.awsdns-25.com | ||||||
| A | 2600:9000:5300:cb00::1🇺🇸 Amazon2600:9000:5300::/48 - CloudFront | ||||||
| PTR | ns-203.awsdns-25.com | ||||||
| A | 205.251.192.203🇺🇸 Amazon205.251.192.0/24 prefix | ||||||
| PTR | ns-203.awsdns-25.com | ||||||
| NS | ns-576.awsdns-08.net | ||||||
| A | 2600:9000:5302:4000::1🇺🇸 Amazon2600:9000:5302::/48 - CloudFront | ||||||
| PTR | ns-576.awsdns-08.net | ||||||
| A | 205.251.194.64🇺🇸 Amazon205.251.194.0/24 prefix | ||||||
| PTR | ns-576.awsdns-08.net | ||||||
| TXT | v=spf1 -all | ||||||
| SOA | ns-1995.awsdns-57.co.ukawsdns-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=1782086495 | ||||||
Same first word
modelthinking-class.com |
DNS History
7 records (5 active, 2 former)
●NSns-1261.awsdns-29.org2026-06-22 → 2026-06-22 · 2 obs
● 2026-06-22 00:18:14
●NSns-1995.awsdns-57.co.uk2026-06-22 → 2026-06-22 · 2 obs
● 2026-06-22 00:18:14
●NSns-203.awsdns-25.com2026-06-22 → 2026-06-22 · 2 obs
● 2026-06-22 00:18:14
●NSns-576.awsdns-08.net2026-06-22 → 2026-06-22 · 2 obs
● 2026-06-22 00:18:14
○NSns73.domaincontrol.com2015-06-16 → 2018-08-25 · 3 obs
● 2018-08-25 07:43:52
○ 2026-06-22 00:18:14
○NSns74.domaincontrol.com2015-06-16 → 2018-08-25 · 3 obs
● 2018-08-25 07:43:52
○ 2026-06-22 00:18:14
●A107.22.230.102015-06-16 → 2026-06-22 · 2 obs
● 2026-06-22 00:18:14
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| modelthinking-class.com | ns-203.awsdns-25.com, ns-576.awsdns-08.net, ns-1261.awsdns-29.org, ns-1995.awsdns-57.co.uk | 2 records |
✅ Authoritative Response
Server:205.251.196.237
NS records: ns-203.awsdns-25.com, ns-576.awsdns-08.net, ns-1261.awsdns-29.org, ns-1995.awsdns-57.co.uk
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for modelthinking-class.com (unsigned zone)
⏱️ Timing
Total: 357ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| A | 1 | 107.22.230.10 |
| NS | 4 | ns-1261.awsdns-29.org, ns-1995.awsdns-57.co.uk... |
| TXT | 1 | v=spf1 -all |
| SOA | 1 | ns-1995.awsdns-57.co.uk awsdns-hostmaste |
📌 Glue Records Collected
Total: 2
Out-of-bailiwick: 2 (ns-203.awsdns-25.com, ns-203.awsdns-25.com)
Analysis
IP Addresses
modelthinking-class.com resolves to one IP address: 107.22.230.10.
gametheoryclass.com, info-theory.org, greenbuilding-class.com and two other host names share IP numbers with modelthinking-class.com.
Name Servers
The authoritative name servers for modelthinking-class.com are ns-203.awsdns-25.com, ns-576.awsdns-08.net, ns-1261.awsdns-29.org and ns-1995.awsdns-57.co.uk.
The name servers of modelthinking-class.com overlap at least partially with those of other domains — among them getactiverewards.com, d1rjx914ygvqmf.cloudfront.net, ssl247.se and two more.
Each of the four hosts ns-203.awsdns-25.com, ns-576.awsdns-08.net, ns-1261.awsdns-29.org and ns-1995.awsdns-57.co.uk has two IP addresses. ns-203.awsdns-25.com points to 205.251.192.203 and 2600:9000:5300:cb00::1. ns-576.awsdns-08.net points to 205.251.194.64 and 2600:9000:5302:4000::1. ns-1261.awsdns-29.org points to 205.251.196.237 and 2600:9000:5304:ed00::1. ns-1995.awsdns-57.co.uk points to 205.251.199.203 and 2600:9000:5307:cb00::1.