files.cmp-prep.optimizely.com - dns.ninja
files.cmp-prep.optimizely.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns-1151.awsdns-15.org ⭐ | ||||||
| A | 2600:9000:5304:7f00::1🇺🇸 Amazon2600:9000:5304::/48 - CloudFront | ||||||
| PTR | ns-1151.awsdns-15.org | ||||||
| A | 205.251.196.127🇺🇸 Amazon205.251.196.0/24 prefix | ||||||
| PTR | ns-1151.awsdns-15.org | ||||||
| NS | ns-1941.awsdns-50.co.uk | ||||||
| A | 2600:9000:5307:9500::1🇺🇸 Amazon2600:9000:5307::/48 - CloudFront | ||||||
| PTR | ns-1941.awsdns-50.co.uk | ||||||
| A | 205.251.199.149🇺🇸 Amazon205.251.199.0/24 prefix | ||||||
| PTR | ns-1941.awsdns-50.co.uk | ||||||
| NS | ns-401.awsdns-50.com | ||||||
| A | 2600:9000:5301:9100::1🇺🇸 Amazon2600:9000:5301::/48 - CloudFront | ||||||
| PTR | ns-401.awsdns-50.com | ||||||
| A | 205.251.193.145🇺🇸 Amazon205.251.193.0/24 prefix | ||||||
| PTR | ns-401.awsdns-50.com | ||||||
| NS | ns-942.awsdns-53.net | ||||||
| A | 2600:9000:5303:ae00::1🇺🇸 Amazon2600:9000:5303::/48 - CloudFront | ||||||
| PTR | ns-942.awsdns-53.net | ||||||
| A | 205.251.195.174🇺🇸 Amazon205.251.195.0/24 prefix | ||||||
| PTR | ns-942.awsdns-53.net | ||||||
| SOA | ns-1151.awsdns-15.orgawsdns-hostmaster@amazon.com serial=1 | ||||||
cmp-prep.optimizely.com
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns-1541.awsdns-00.co.uk ⭐ | ||||||
| NS | ns-1109.awsdns-10.org | ||||||
| NS | ns-222.awsdns-27.com | ||||||
| NS | ns-765.awsdns-31.net | ||||||
| SOA | ns-1541.awsdns-00.co.ukawsdns-hostmaster@amazon.com serial=1 | ||||||
WOT: SAFE (79/100)
Same first word
Similar names
DNS History
4 records (4 active, 0 former)
●NSns-1151.awsdns-15.org2026-07-19 → 2026-08-14 · 2 obs
● 2026-08-14 13:16:02
●NSns-1941.awsdns-50.co.uk2026-07-19 → 2026-08-14 · 2 obs
● 2026-08-14 13:16:02
●NSns-401.awsdns-50.com2026-07-19 → 2026-08-14 · 2 obs
● 2026-08-14 13:16:02
●NSns-942.awsdns-53.net2026-07-19 → 2026-08-14 · 2 obs
● 2026-08-14 13:16:02
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| com | a.gtld-servers.net, b.gtld-servers.net, c.gtld-servers.net, d.gtld-servers.net... | - |
| optimizely.com | doug.ns.cloudflare.com, harmony.ns.cloudflare.com | 12 records |
| cmp-prep.optimizely.com | ns-1109.awsdns-10.org, ns-1541.awsdns-00.co.uk, ns-222.awsdns-27.com, ns-765.awsdns-31.net | - |
| files.cmp-prep.optimizely.com | ns-1151.awsdns-15.org, ns-1941.awsdns-50.co.uk, ns-401.awsdns-50.com, ns-942.awsdns-53.net | - |
✅ Authoritative Response
Server:205.251.195.174
NS records: ns-1151.awsdns-15.org, ns-1941.awsdns-50.co.uk, ns-401.awsdns-50.com, ns-942.awsdns-53.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for cmp-prep.optimizely.com (unsigned zone)
⏱️ Timing
Total: 690ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | ns-1151.awsdns-15.org, ns-1941.awsdns-50.co.uk... |
| SOA | 1 | ns-1151.awsdns-15.org awsdns-hostmaster. |
📌 Glue Records Collected
Total: 12
Out-of-bailiwick: 12 (doug.ns.cloudflare.com, doug.ns.cloudflare.com, doug.ns.cloudflare.com...)
Analysis
Name Servers
files.cmp-prep.optimizely.com has four authoritative name servers: ns-401.awsdns-50.com, ns-942.awsdns-53.net, ns-1151.awsdns-15.org and ns-1941.awsdns-50.co.uk.
There is at least partial name server overlap between files.cmp-prep.optimizely.com and other domains — prod.ahotu.com, app.camfil.azh.sainceiot.eu, diamonddiagnostics.com and two more among them.
All four hostnames — ns-401.awsdns-50.com, ns-942.awsdns-53.net, ns-1151.awsdns-15.org and ns-1941.awsdns-50.co.uk — resolve to two IP numbers apiece: ns-401.awsdns-50.com to 205.251.193.145 and 2600:9000:5301:9100::1; ns-942.awsdns-53.net to 205.251.195.174 and 2600:9000:5303:ae00::1; ns-1151.awsdns-15.org to 205.251.196.127 and 2600:9000:5304:7f00::1; ns-1941.awsdns-50.co.uk to 205.251.199.149 and 2600:9000:5307:9500::1.