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 cfa.harvard.edu

Current Trust Summary

This GoGuides Trust Record summarizes the current measured state for cfa.harvard.edu.

Record Status

Public record
First recorded by GoGuides: 2026-08-22 09:36:04

Public Profile Display

Normal public profile display permitted by current GoGuides policy.

Current Grade

A / AI Rank 80

Crawl Freshness

Fresh
Last crawled 2 minutes ago

Domain Provenance Record

11 measurements across 39 days

Stability Window

0 days

Trust Record

Public Trust Record for cfa.harvard.edu.

View Full Trust Profile →

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GOGUIDES

Public Trust Record

Rank: A • View Details

Canonical URL

https://cfa.harvard.edu/

Matched URL

https://www.cfa.harvard.edu/

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.cfa.harvard.edu/

Observed Public IP Addresses

104.20.19.56, 172.66.165.88

Observed Nameservers

a1-171.akam.net, a10-66.akam.net, a11-67.akam.net, a16-64.akam.net, a6-66.akam.net, a7-65.akam.net

Robots Access

Allowed
allowed

Page Robots Directive

Not observed

TLS Certificate

CN=WE1,O=Google Trust Services,C=US
Valid 2026-08-12 22:33:26 to 2026-11-10 23:33:22

Observed Provenance States

11 stored states across 11 observations

Observed State Changes

Content: 9
Robots: 2
DNS: 0
TLS certificate: 0
Final URL: 9

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://www.cfa.harvard.edu/

Final URL
https://www.cfa.harvard.edu/

HTTP Status
200

Redirect Count
0

Content Type
text/html; charset=UTF-8

Response Bytes
81,442

Canonical URL
https://www.cfa.harvard.edu/

Observed Page Title
Home | Center for Astrophysics | Harvard & Smithsonian

Robots Access
Allowed

Robots Reason
allowed

Meta Robots
Not observed

X-Robots-Tag
Not observed

Observed Public IP Address(es)
104.20.19.56, 172.66.165.88

Observed Nameservers
a1-171.akam.net, a10-66.akam.net, a11-67.akam.net, a16-64.akam.net, a6-66.akam.net, a7-65.akam.net

TLS Certificate Issuer
CN=WE1,O=Google Trust Services,C=US

TLS Valid From
2026-08-12 22:33:26

TLS Valid Until
2026-11-10 23:33:22

First Observed
2026-10-01 07:01:03

Last Observed
2026-10-01 07:01:03

Identical-State Observations
1

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

                Title SHA-256

                3c37ecdb9f6cd17ba2b665075a55d22b7fe1e79fa13142ace32f441e7837b655            

                Content SHA-256

                cd54a69857db514efc23c0cd0c9fa8944e64ed29ee5aabd647a21071255007a4            

                HTTP Body SHA-256

                afade9b5d3c3b242b9c55032248249378d12e754511d2317fed53b48ea68f644            

                robots.txt SHA-256

                773fb8d35bb9a39d35335ee6db8dc5c912d2aacbfb823152d9c61cd647dd902d            

                DNS State SHA-256

                b1c456221b61a7d3a2efdff2f513625102b3ab85ca11c9a2f3839d8f77cd5ff1            

                TLS Certificate SHA-256

                43f2fac5631bd467504bfbb49726f5906b151ca51828c59c9abe6127e81331e9            

                Complete Provenance State SHA-256

                748812720cc3f4c938c3242937afeff702d113382729a73060965a4e5aeeaaed

View Machine-Readable Provenance JSON

First Seen by GoGuides

2026-08-22 09:36:04

Last Crawled by GoGuides

2026-10-01 07:01:03 (2 minutes ago)

Last Provenance Observation

2026-10-01 07:01:03 (2 minutes ago)

Provenance Freshness

Fresh
Last observed 2 minutes ago

Observed History Age

39 days

Trust Record Age

39 days ago

Provenance Observations

Observation Span

39 days across 11 observations

Stability Window

0 days

Current Trust State Since

2026-10-01 07:01:03 (2 minutes ago)

Days Since Last Change

0 days

Rank/Algo State Changes

Trust Record Fingerprint (SHA-256)

eb47267099ea85e3235db92df0b4a5564aebf9a88d1a32d0b22314f920655922

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

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