semanticknowledge.alexa.amazon.dev - robtex.com
semanticknowledge.alexa.amazon.dev
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns-1268.awsdns-30.org ⭐ | ||||||
| A | 2600:9000:5304:f400::1🇺🇸 Amazon2600:9000:5304::/48 - CloudFront | ||||||
| PTR | ns-1268.awsdns-30.org | ||||||
| A | 205.251.196.244🇺🇸 Amazon205.251.196.0/24 prefix | ||||||
| PTR | ns-1268.awsdns-30.org | ||||||
| NS | ns-1633.awsdns-12.co.uk | ||||||
| A | 2600:9000:5306:6100::1🇺🇸 Amazon2600:9000:5306::/48 - CloudFront | ||||||
| PTR | ns-1633.awsdns-12.co.uk | ||||||
| A | 205.251.198.97🇺🇸 Amazon205.251.198.0/24 prefix | ||||||
| PTR | ns-1633.awsdns-12.co.uk | ||||||
| NS | ns-176.awsdns-22.com | ||||||
| A | 2600:9000:5300:b000::1🇺🇸 Amazon2600:9000:5300::/48 - CloudFront | ||||||
| PTR | ns-176.awsdns-22.com | ||||||
| A | 205.251.192.176🇺🇸 Amazon205.251.192.0/24 prefix | ||||||
| PTR | ns-176.awsdns-22.com | ||||||
| NS | ns-744.awsdns-29.net | ||||||
| A | 2600:9000:5302:e800::1🇺🇸 Amazon2600:9000:5302::/48 - CloudFront | ||||||
| PTR | ns-744.awsdns-29.net | ||||||
| A | 205.251.194.232🇺🇸 Amazon205.251.194.0/24 prefix | ||||||
| PTR | ns-744.awsdns-29.net | ||||||
| SOA | ns-1268.awsdns-30.orgawsdns-hostmaster@amazon.com serial=1 | ||||||
alexa.amazon.dev
| DNSSEC | ⚠️ Not signed | ||||||
| NS | ns-1694.awsdns-19.co.uk ⭐ | ||||||
| NS | ns-1414.awsdns-48.org | ||||||
| NS | ns-402.awsdns-50.com | ||||||
| NS | ns-941.awsdns-53.net | ||||||
| SOA | ns-1694.awsdns-19.co.ukawsdns-hostmaster@amazon.com serial=1 | ||||||
DNS History
4 records (4 active, 0 former)
●NSns-1268.awsdns-30.org2026-07-26 → 2026-08-03 · 2 obs
● 2026-08-03 20:33:50
●NSns-1633.awsdns-12.co.uk2026-07-26 → 2026-08-03 · 2 obs
● 2026-08-03 20:33:50
●NSns-176.awsdns-22.com2026-07-26 → 2026-08-03 · 2 obs
● 2026-08-03 20:33:50
●NSns-744.awsdns-29.net2026-07-26 → 2026-08-03 · 2 obs
● 2026-08-03 20:33:50
🔍 DNS Trace
📋 Delegation Chain
| Zone | Nameservers | Glue |
|---|---|---|
| dev | ns-tld3.charlestonroadregistry.com, ns-tld5.charlestonroadregistry.com, ns-tld4.charlestonroadregistry.com, ns-tld2.charlestonroadregistry.com... | - |
| amazon.dev | ns-1373.awsdns-43.org, ns-101.awsdns-12.com, ns-729.awsdns-27.net, ns-1648.awsdns-14.co.uk | - |
| alexa.amazon.dev | ns-1414.awsdns-48.org, ns-1694.awsdns-19.co.uk, ns-402.awsdns-50.com, ns-941.awsdns-53.net | - |
| semanticknowledge.alexa.amazon.dev | ns-1268.awsdns-30.org, ns-1633.awsdns-12.co.uk, ns-176.awsdns-22.com, ns-744.awsdns-29.net | - |
✅ Authoritative Response
Server:205.251.194.232
NS records: ns-1268.awsdns-30.org, ns-1633.awsdns-12.co.uk, ns-176.awsdns-22.com, ns-744.awsdns-29.net
🔒 DNSSEC Status
⚠️ Insecure (no DNSSEC)
No DS record for amazon.dev (unsigned zone)
⏱️ Timing
Total: 1411ms | Queries: -
📄 Records
| Type | Count | Sample Data |
|---|---|---|
| NS | 4 | ns-1268.awsdns-30.org, ns-1633.awsdns-12.co.uk... |
| SOA | 1 | ns-1268.awsdns-30.org awsdns-hostmaster. |
Analysis
Name Servers
The NS records for semanticknowledge.alexa.amazon.dev point to four name servers: ns-176.awsdns-22.com, ns-744.awsdns-29.net, ns-1268.awsdns-30.org and ns-1633.awsdns-12.co.uk.
semanticknowledge.alexa.amazon.dev shares at least some of its name servers with other domains, including marineparts.ie, figurafiscalws.com.br, arcs-m3tech.com and two others.
These name servers are frequently paired with the name servers ns-104.awsdns-13.com, ns-667.awsdns-19.net and ns-1417.awsdns-49.org.
The host names ns-176.awsdns-22.com, ns-744.awsdns-29.net, ns-1268.awsdns-30.org and ns-1633.awsdns-12.co.uk each resolve to two IP addresses: ns-176.awsdns-22.com resolves to 205.251.192.176 and 2600:9000:5300:b000::1; ns-744.awsdns-29.net resolves to 205.251.194.232 and 2600:9000:5302:e800::1; ns-1268.awsdns-30.org resolves to 205.251.196.244 and 2600:9000:5304:f400::1; ns-1633.awsdns-12.co.uk resolves to 205.251.198.97 and 2600:9000:5306:6100::1.