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
deeplearningbook.org
Current Trust Summary
This GoGuides Trust Record summarizes the current measured state for deeplearningbook.org.
Record Status
Public record
First recorded by GoGuides: 2026-09-09 23:54:18
First recorded by GoGuides: 2026-09-09 23:54:18
Public Profile Display
Normal public profile display permitted by current GoGuides policy.
Current Grade
A / AI Rank 74
Crawl Freshness
Fresh
Last crawled just now
Last crawled just now
Domain Provenance Record
3 measurements across 13 days
Stability Window
13 days
Trust Record
Public Trust Record for deeplearningbook.org.
Own this site? Copy this trust record code.
GOGUIDES
Public Trust Record
Rank: A • View Details
Canonical URL
https://deeplearningbook.org/
Matched URL
https://deeplearningbook.org/
AI Rank
74
Grade
A
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.deeplearningbook.org/
Observed Public IP Addresses
162.255.119.150, 185.199.110.153, 185.199.111.153, 192.30.252.153, 192.30.252.154
Observed Nameservers
dns1.registrar-servers.com, dns2.registrar-servers.com
Robots Access
Allowed
robots_unreachable_allowed
robots_unreachable_allowed
Page Robots Directive
Not observed
TLS Certificate
CN=Sectigo Public Server Authentication CA DV R36,O=Sectigo Limited,C=GB
Valid 2026-08-10 00:00:00 to 2026-11-07 23:59:59
Valid 2026-08-10 00:00:00 to 2026-11-07 23:59:59
Observed Provenance States
4 stored states across
4 observations
Observed State Changes
Content: 0
Robots: 0
DNS: 0
TLS certificate: 1
Final URL: 0
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
Full Page Observation
Requested URL
https://deeplearningbook.org/
https://deeplearningbook.org/
Final URL
https://www.deeplearningbook.org/
https://www.deeplearningbook.org/
HTTP Status
200
200
Redirect Count
1
1
Content Type
text/html; charset=utf-8
text/html; charset=utf-8
Response Bytes
5,943
5,943
Canonical URL
Not observed
Not observed
Observed Page Title
Deep Learning
Deep Learning
Robots Access
Allowed
Allowed
Robots Reason
robots_unreachable_allowed
robots_unreachable_allowed
Meta Robots
Not observed
Not observed
X-Robots-Tag
Not observed
Not observed
Observed Public IP Address(es)
162.255.119.150, 185.199.110.153, 185.199.111.153, 192.30.252.153, 192.30.252.154
162.255.119.150, 185.199.110.153, 185.199.111.153, 192.30.252.153, 192.30.252.154
Observed Nameservers
dns1.registrar-servers.com, dns2.registrar-servers.com
dns1.registrar-servers.com, dns2.registrar-servers.com
TLS Certificate Issuer
CN=Sectigo Public Server Authentication CA DV R36,O=Sectigo Limited,C=GB
CN=Sectigo Public Server Authentication CA DV R36,O=Sectigo Limited,C=GB
TLS Valid From
2026-08-10 00:00:00
2026-08-10 00:00:00
TLS Valid Until
2026-11-07 23:59:59
2026-11-07 23:59:59
First Observed
2026-09-15 07:45:36
2026-09-15 07:45:36
Last Observed
2026-09-15 07:45:36
2026-09-15 07:45:36
Identical-State Observations
1
1
▶ Show Cryptographic Evidence & SHA-256 Hashes ▼ Cryptographic Evidence & SHA-256 Hashes
Title SHA-256
bcd41373249e305015545f00cf618a7d2d225e4368f8b360d753e469570e59a4
bcd41373249e305015545f00cf618a7d2d225e4368f8b360d753e469570e59a4
Content SHA-256
ad789b4c0523541ee90d137fd0428ef1f6dbbdd4e9a3b5ab1b3e3cbec94dd2a0
ad789b4c0523541ee90d137fd0428ef1f6dbbdd4e9a3b5ab1b3e3cbec94dd2a0
HTTP Body SHA-256
913a461983b8872994a9d2512f2d72dd31aa232940982acd79fe92e9647f83d2
913a461983b8872994a9d2512f2d72dd31aa232940982acd79fe92e9647f83d2
robots.txt SHA-256
Not observed
Not observed
DNS State SHA-256
389fee7a38d71dba283a692b0e9001c1c78a6ec4ef2187ca26e4ec360b5eee10
389fee7a38d71dba283a692b0e9001c1c78a6ec4ef2187ca26e4ec360b5eee10
TLS Certificate SHA-256
1e23ac36939ae9efa41aa41c8c9190451fcff12377153851397af58f19307345
1e23ac36939ae9efa41aa41c8c9190451fcff12377153851397af58f19307345
Complete Provenance State SHA-256
b3d863b25288e4e1f06baaa826dc7c660c32caaaa530a2fd24ad576269e21476
b3d863b25288e4e1f06baaa826dc7c660c32caaaa530a2fd24ad576269e21476
First Seen by GoGuides
2026-09-09 23:54:18
Last Crawled by GoGuides
2026-09-23 18:43:12 (just now)
Last Record Refresh
2026-09-23 18:43:13 (just now)
Record Refresh Freshness
Fresh
Last refreshed just now
Last refreshed just now
Stored Measurement Age
13 days
Trust Record Age
13 days ago
Stored Trust Measurements
3
Measurement Span
13 days across 3 stored measurements
Stability Window
13 days
Current Trust State Since
2026-09-09 23:54:18 (13 days ago)
Days Since Last Change
13 days
Rank/Algo State Changes
0
Trust Record Fingerprint (SHA-256)
0b61628df0ab834f016e2f09de8f01ecc55fe2d2d2447fe48552a0baac2d64a2
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.
2026-09-23 18:43:13 | rank 74 | crawled 2026-09-23 18:43:12 | v10b61628df0ab834f016e2f09de8f01ecc55fe2d2d2447fe48552a0baac2d64a2
2026-09-17 09:32:39 | rank 74 | crawled 2026-09-15 07:45:35 | v1
c01436aa55f602e276b69ead329699e9a4f3392407850aba7ba7b07cdda2989d
2026-09-09 23:54:18 | rank 74 | crawled 2026-09-08 05:24:04 | v1
86edfd03ea9c773c0d62a898e79f5201cf7e63ac280b75e03bb2ad5be466a08d
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.
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.