Open CDN detection tool

amazon.com CDN Detection: Possible Amazon CloudFront Usage

CNAME, HTTP header, and ASN signals indicate that amazon.com may be using Amazon CloudFront, with 45% confidence. Review the evidence and latest check time.

Checked At: 10/28/2026, 01:42:45

Likely using Amazon CloudFront

This result is based on public DNS, HTTP, and network signals and may update with later observations.

amazon.comHTTP Status 200 10/28/2026, 01:42:45

Overall Confidence

45%Evidence strength

Based on the independent evidence matched in this detection

Node Distribution

Current snapshot
Amazon CloudFront 45%

Detection Path

Complete · 5 stages

DNS Resolution
-

Complete · 6 addresses

CNAME Chain
-

Complete · 1 CNAME found

IP / ASN
-

Complete · 6 IPs, 4 ASNs

HTTP Response
-

Complete · response headers collected

Fingerprint Score
-

Complete · 4 evidence types

Evidence Timeline

Observed facts ordered by collection time

Checked At: 10/28/2026, 01:42:45
05:42:45 PM
HTTP
header: x-amz-cf-id
Amazon CloudFront

Strong

05:43:48 PM
HTTP
header: x-amz-cf-id
Amazon CloudFront

Strong

05:43:49 PM
HTTP
header: x-amz-cf-id
Amazon CloudFront

Strong

05:43:50 PM
HTTP
header: x-amz-cf-id
Amazon CloudFront

Strong

05:43:50 PM
HTTP
header: x-amz-cf-id
Amazon CloudFront

Strong

Score Explanation

Evidence strength breakdown

HTTP headers
100 / 100

Response header name and value matches

This score presents evidence strength, not statistical probability. A shared ASN or cloud network cannot confirm a CDN on its own.

Node and Routing Differences

Resolution results and access signals observed by region and carrier

Collected just now
RegionCarrierResolved IPCDN ProviderASNLocationTTLConfidenceTTFB
Northern China中国电信99.84.135.120/32Amazon CloudFront-中国 北京市-
45%
1968ms
Eastern North AmericaOverseas2600:9000:2140:2800:7:49a5:5fd6:da1/128Amazon CloudFront-美国 波士顿-
45%
337ms
Central node-23.209.218.146/32---625s
0%
-
Western North AmericaOverseas13.249.70.232/32Amazon CloudFront-美国 圣何塞-
45%
443ms
East AsiaOverseas13.33.182.182/32Amazon CloudFront-中国香港特别行政区 香港-
45%
1107ms
Southern ChinaBGP多线13.33.52.208/32Amazon CloudFront-中国 广州市-
45%
1647ms
Node results vary by region, carrier and time6 nodes
Detection results are inferred from public DNS and HTTP signals. Confidence reflects the strength of the matched evidence and does not imply 100% certainty.
Amazon CloudFrontPrimary candidate

Confidence 45%

header: x-amz-cf-id
header: x-amz-cf-id
header: x-amz-cf-id
header: x-amz-cf-id
header: x-amz-cf-id
View Amazon CloudFront Performance Review

Methodology and limitations

Identification results are based on cross-verification of public DNS, HTTP response headers, and ASN signals; confidence indicates evidence strength and does not represent statistical accuracy.