GoGuides Trust Record

Enter a domain to view its GoGuides Website Trust Record, including observed measurements, canonical website URL, observation history, current record and policy state, record fingerprint, and crawl timing.

Website Trust Record nsf.org

Current Trust Summary

This GoGuides Trust Record summarizes the current measured state for nsf.org.

Record Status

Public record
First recorded by GoGuides: 2026-01-08 23:52:49

Public Profile Display

Normal public profile display permitted by current GoGuides policy.

Current Grade

A / AI Rank 76

Crawl Freshness

Fresh
Last crawled 1 minute ago

Domain Provenance Record

5 measurements across 40 days

Stability Window

0 days

Trust Record

Public Trust Record for nsf.org.

View Full Trust Profile →

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GOGUIDES

Public Trust Record

Rank: A • View Details

Canonical URL

https://nsf.org/

Matched URL

https://nsf.org/

AI Rank

Grade

Domain Provenance Timeline

Independent GoGuides observations showing when this domain was first recorded, how long it has been observed, and when its recorded state changed.

Observed Web & Network State

Objective state captured by GoGuides during its domain observation. These fields describe what GoGuides observed and are separate from AI Rank or Grade.

HTTP Status

200

Observed Final URL

https://www.nsf.org/

Observed Public IP Address

52.191.90.193

Observed Nameservers

ns-1155.awsdns-16.org, ns-1781.awsdns-30.co.uk, ns-263.awsdns-32.com, ns-950.awsdns-54.net

Robots Access

Allowed
allowed

Page Robots Directive

index, follow

TLS Certificate

CN=YR1,O=Let's Encrypt,C=US
Valid 2026-08-27 11:31:07 to 2026-11-25 11:31:06

Observed Provenance States

5 stored states across 5 observations

Observed State Changes

Content: 3
Robots: 0
DNS: 0
TLS certificate: 1
Final URL: 0

Observed Evidence Details

These are objective observations recorded by the GoGuides crawler. They are separate from GoGuides AI Rank, Grade, or other interpretation.

Observation Type
Full Page Observation

Requested URL
https://nsf.org/

Final URL
https://www.nsf.org/

HTTP Status
200

Redirect Count
1

Content Type
text/html; charset=utf-8

Response Bytes
261,071

Canonical URL
https://www.nsf.org

Observed Page Title
NSF | The Public Health and Safety Organization

Robots Access
Allowed

Robots Reason
allowed

Meta Robots
index, follow

X-Robots-Tag
Not observed

Observed Public IP Address(es)
52.191.90.193

Observed Nameservers
ns-1155.awsdns-16.org, ns-1781.awsdns-30.co.uk, ns-263.awsdns-32.com, ns-950.awsdns-54.net

TLS Certificate Issuer
CN=YR1,O=Let's Encrypt,C=US

TLS Valid From
2026-08-27 11:31:07

TLS Valid Until
2026-11-25 11:31:06

First Observed
2026-10-03 11:37:03

Last Observed
2026-10-03 11:37:03

Identical-State Observations
1

▶ Show Cryptographic Evidence & SHA-256 Hashes ▼ Cryptographic Evidence & SHA-256 Hashes

                Title SHA-256

                2a8b2c66970808cbf391f43a3112cad58520a955a3ad72b66117eb57f602dc33            

                Content SHA-256

                d66b3557151ec1562ab0bc84b704b737d475e7858252951aceb9a08f25880634            

                HTTP Body SHA-256

                9835782e761ca4a45a72417fa7ceee49c5e42e62de4741ce06025af9126bfc6d            

                robots.txt SHA-256

                b8acc8b872065881b06ae912611fad4b08918dd6bef1e92a1b2e56a2241f505c            

                DNS State SHA-256

                f71147b2752247f0e79df520978d5a607dc37ea6a9788bdb844d4a4410a2b358            

                TLS Certificate SHA-256

                4fc4b0abe9742d4fe4f19c87a83ca34823a28e73294b528ffe34ec0a2c13f104            

                Complete Provenance State SHA-256

                eca091e0765c99445b0bc24eeb26a5cb59cb8d6c1f160e7a9068f5e1e7e60dee

View Machine-Readable Provenance JSON

First Seen by GoGuides

2026-08-23 22:56:59

Last Crawled by GoGuides

2026-10-03 11:37:03 (1 minute ago)

Last Provenance Observation

2026-10-03 11:37:03 (1 minute ago)

Provenance Freshness

Fresh
Last observed 1 minute ago

Observed History Age

40 days

Trust Record Age

267 days ago

Provenance Observations

Observation Span

40 days across 5 observations

Stability Window

0 days

Current Trust State Since

2026-10-03 11:37:03 (1 minute ago)

Days Since Last Change

0 days

Rank/Algo State Changes

Trust Record Fingerprint (SHA-256)

75cfa7a1dfe732e08e2554a2a11bb2af40bb46d63c302211971aeaf4390d9ec5

Computed from: matched URL + rank + last crawled + algorithm version. This identifies the GoGuides trust record state; it is not domain-owner verification.

Provenance Observation History

This timeline shows when GoGuides recorded this state, including rank, crawl timing, algorithm version, and record fingerprint.

2026-09-19 07:42:58 | rank 76 | crawled 2026-09-18 14:31:13 | v1
b88351e5603a4d4e491765a4c4fa5623abe69a42a67782f48ae6bf9e80403a43

Record-State Favicon Previews

These favicons are generated deterministically from GoGuides measurement inputs for the site, including AI Rank and crawl timing. They provide a visual representation of the corresponding GoGuides record state. The same supported inputs produce the same favicon output. If a favicon appears different elsewhere, verify the record here to compare it with the current GoGuides state.

16px

open

32px

open

48px

open

64px

open

96px

open

Related GoGuides Web Intelligence & Trust Utilities

These GoGuides utilities work together to explain crawler activity, inspect AI visibility, compare robots.txt with GoGuides evidence surfaces, check Verified Text records, and explore machine-readable web intelligence and provenance.

Why GoGuides Crawled My Site Are AI Bots Visiting My Site? Not Showing in ChatGPT? Is My Site Used by AI? Robots.txt vs Trust Layer Verified Text Search Submit to the Live Index — $69.95