ufdss.alexa-sci.amazon.dev - robtex.com
ufdss.alexa-sci.amazon.dev
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns-640.awsdns-16.net ⭐ | ||||||
| A | 2600:9000:5302:8000::1🇺🇸 Amazon2600:9000:5302::/48 - CloudFront | ||||||
| PTR | ns-640.awsdns-16.net | ||||||
| A | 205.251.194.128🇺🇸 Amazon205.251.194.0/24 prefix | ||||||
| PTR | ns-640.awsdns-16.net | ||||||
| NS | ns-1221.awsdns-24.org | ||||||
| A | 2600:9000:5304:c500::1🇺🇸 Amazon2600:9000:5304::/48 - CloudFront | ||||||
| PTR | ns-1221.awsdns-24.org | ||||||
| A | 205.251.196.197🇺🇸 Amazon205.251.196.0/24 prefix | ||||||
| PTR | ns-1221.awsdns-24.org | ||||||
| NS | ns-1678.awsdns-17.co.uk | ||||||
| A | 2600:9000:5306:8e00::1🇺🇸 Amazon2600:9000:5306::/48 - CloudFront | ||||||
| PTR | ns-1678.awsdns-17.co.uk | ||||||
| A | 205.251.198.142🇺🇸 Amazon205.251.198.0/24 prefix | ||||||
| PTR | ns-1678.awsdns-17.co.uk | ||||||
| NS | ns-372.awsdns-46.com | ||||||
| A | 2600:9000:5301:7400::1🇺🇸 Amazon2600:9000:5301::/48 - CloudFront | ||||||
| PTR | ns-372.awsdns-46.com | ||||||
| A | 205.251.193.116🇺🇸 Amazon205.251.193.0/24 prefix | ||||||
| PTR | ns-372.awsdns-46.com | ||||||
| SOA | ns-640.awsdns-16.netawsdns-hostmaster@amazon.com serial=1 | ||||||
alexa-sci.amazon.dev
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns-652.awsdns-17.net ⭐ | ||||||
| NS | ns-11.awsdns-01.com | ||||||
| NS | ns-1326.awsdns-37.org | ||||||
| NS | ns-1944.awsdns-51.co.uk | ||||||
| SOA | ns-652.awsdns-17.netawsdns-hostmaster@amazon.com serial=1 | ||||||
Similar names
fsusd.com |
sfusd.org |
fsdus.net |
sfusd.edu |
dfuss.tv |
fsusd.k12.ca.us |
sfusd.com |
fsusd.org |
dfsus.com |
dsusf.dk |
dfuss.de |
sufsd.org |
sfusd.k12.ca.us |
sfdus.com |
sfsud.com |
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dfuss.com |
DNS History
4 records (4 active, 0 former)
●NSns-1221.awsdns-24.org2026-07-07 → 2026-07-11 · 2 obs
● 2026-07-11 09:10:04
●NSns-1678.awsdns-17.co.uk2026-07-07 → 2026-07-11 · 2 obs
● 2026-07-11 09:10:04
●NSns-372.awsdns-46.com2026-07-07 → 2026-07-11 · 2 obs
● 2026-07-11 09:10:04
●NSns-640.awsdns-16.net2026-07-07 → 2026-07-11 · 2 obs
● 2026-07-11 09:10:04
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| dev | ns-tld2.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com, ns-tld1.charlestonroadregistry.com, ns-tld5.charlestonroadregistry.com... | 10 records |
| amazon.dev | ns-1373.awsdns-43.org, ns-101.awsdns-12.com, ns-1648.awsdns-14.co.uk, ns-729.awsdns-27.net | - |
| alexa-sci.amazon.dev | ns-11.awsdns-01.com, ns-1326.awsdns-37.org, ns-1944.awsdns-51.co.uk, ns-652.awsdns-17.net | - |
| ufdss.alexa-sci.amazon.dev | ns-1221.awsdns-24.org, ns-1678.awsdns-17.co.uk, ns-372.awsdns-46.com, ns-640.awsdns-16.net | - |
✅ Authoritative Response
Server:205.251.193.116
NS records: ns-1221.awsdns-24.org, ns-1678.awsdns-17.co.uk, ns-372.awsdns-46.com, ns-640.awsdns-16.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for amazon.dev (unsigned zone)
⏱️ Timing
Total: 602ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | ns-1221.awsdns-24.org, ns-1678.awsdns-17.co.uk... |
| SOA | 1 | ns-640.awsdns-16.net awsdns-hostmaster.a |
📌 Glue Records Collected
Total: 10
Out-of-bailiwick: 10 (ns-tld5.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld3.charlestonroadregistry.com...)
Analysis
Name Servers
ufdss.alexa-sci.amazon.dev has four authoritative name servers: ns-372.awsdns-46.com, ns-640.awsdns-16.net, ns-1221.awsdns-24.org and ns-1678.awsdns-17.co.uk.
The name servers of ufdss.alexa-sci.amazon.dev overlap at least partially with those of other domains — among them jarimetsala.fi, developer.workday.com, r0.cc and two more.
Each of the four hosts ns-372.awsdns-46.com, ns-640.awsdns-16.net, ns-1221.awsdns-24.org and ns-1678.awsdns-17.co.uk has two IP addresses. ns-372.awsdns-46.com points to 205.251.193.116 and 2600:9000:5301:7400::1. ns-640.awsdns-16.net points to 205.251.194.128 and 2600:9000:5302:8000::1. ns-1221.awsdns-24.org points to 205.251.196.197 and 2600:9000:5304:c500::1. ns-1678.awsdns-17.co.uk points to 205.251.198.142 and 2600:9000:5306:8e00::1.