Open CDN detection tool

youngking-gfy.github.io CDN Detection: Possible Fastly Usage

CNAME, HTTP header, and ASN signals indicate that youngking-gfy.github.io may be using Fastly, with 45% confidence. Review the evidence and latest check time.

Checked At: 10/8/2026, 09:40:14

Likely using Fastly

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

youngking-gfy.github.ioHTTP Status 200 10/8/2026, 09:40:14

Overall Confidence

45%Evidence strength

Based on the independent evidence matched in this detection

Node Distribution

Current snapshot
Fastly 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: 10/8/2026, 09:40:14
01:40:14 AM
HTTP
header: x-served-by
Fastly

Strong

01:40:37 AM
HTTP
header: x-served-by
Fastly

Strong

01:40:38 AM
HTTP
header: x-served-by
Fastly

Strong

01:40:38 AM
HTTP
header: x-served-by
Fastly

Strong

01:40:38 AM
HTTP
header: x-served-by
Fastly

Strong

Show 2 more evidence items
01:40:38 AM
HTTP
header: x-served-by
Fastly

Strong

01:40:39 AM
HTTP
header: x-served-by
Fastly

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185.199.108.153/32Fastly-中国 北京市-
45%
734ms
Southwestern China中国电信2606:50c0:8000::153/128Fastly-中国 昆明市-
45%
584ms
Western North AmericaOverseas185.199.110.153/32Fastly-美国 圣何塞-
45%
148ms
Eastern North AmericaOverseas2606:50c0:8003::153/128Fastly-美国 波士顿-
45%
126ms
Central node-185.199.111.153/32Fastly--3599s
45%
-
East AsiaOverseas185.199.110.153/32Fastly-中国香港特别行政区 香港-
45%
362ms
Southern ChinaBGP多线185.199.108.153/32Fastly-中国 广州市-
45%
769ms
Node results vary by region, carrier and time7 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.
FastlyPrimary candidate

Confidence 45%

header: x-served-by
header: x-served-by
header: x-served-by
header: x-served-by
header: x-served-by
header: x-served-by
header: x-served-by
View Fastly Performance Review

Methodology and limitations

Detection results are based on cross-referencing public DNS, HTTP response headers, and ASN signals; confidence indicates evidence strength and does not represent accuracy in a statistical sense.