GoGuides Trust Record
Enter a domain to view its GoGuides Website Trust Record, including measured trust signals, canonical website URL, observation history, current trust state, trust record fingerprint, and crawl timing.
Website Trust Record
trb.org
Current Trust Summary
This GoGuides Trust Record summarizes the current measured state for trb.org.
Trust Status
Public trust record
First recorded by GoGuides: 2026-01-08 23:52:56
First recorded by GoGuides: 2026-01-08 23:52:56
Public Eligibility
Eligible for public trust display.
Current Grade
A+ / AI Rank 85
Crawl Freshness
Fresh
Last crawled 2 hours ago
Last crawled 2 hours ago
Domain Provenance Record
11 measurements across 125 days
Stability Window
125 days
Trust Record
Public Trust Record for trb.org.
Own this site? Copy this trust record code.
GOGUIDES
Public Trust Record
Rank: A+ • View Details
Canonical URL
https://trb.org/
Matched URL
https://trb.org/
AI Rank
85
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.nationalacademies.org/units/TRB-Transporta-23-P-586
Observed Public IP Address
144.171.1.149
Observed Nameservers
a1-44.akam.net, a11-64.akam.net, a16-67.akam.net, a28-67.akam.net, a5-65.akam.net, a6-66.akam.net
Robots Access
Allowed
allowed
allowed
Page Robots Directive
Not observed
TLS Certificate
CN=DigiCert EV RSA CA G2,O=DigiCert Inc,C=US
Valid 2026-07-20 00:00:00 to 2027-02-03 23:59:59
Valid 2026-07-20 00:00:00 to 2027-02-03 23:59:59
Observed Provenance States
27 stored states across
27 observations
Observed State Changes
Content: 0
Robots: 0
DNS: 0
TLS certificate: 0
Final URL: 0
Robots: 0
DNS: 0
TLS certificate: 0
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://trb.org/
https://trb.org/
Final URL
https://www.nationalacademies.org/units/TRB-Transporta-23-P-586
https://www.nationalacademies.org/units/TRB-Transporta-23-P-586
HTTP Status
200
200
Redirect Count
3
3
Content Type
text/html; charset=UTF-8
text/html; charset=UTF-8
Response Bytes
366,126
366,126
Canonical URL
Not observed
Not observed
Observed Page Title
Transportation Research Board (TRB)
Transportation Research Board (TRB)
Robots Access
Allowed
Allowed
Robots Reason
allowed
allowed
Meta Robots
Not observed
Not observed
X-Robots-Tag
Not observed
Not observed
Observed Public IP Address(es)
144.171.1.149
144.171.1.149
Observed Nameservers
a1-44.akam.net, a11-64.akam.net, a16-67.akam.net, a28-67.akam.net, a5-65.akam.net, a6-66.akam.net
a1-44.akam.net, a11-64.akam.net, a16-67.akam.net, a28-67.akam.net, a5-65.akam.net, a6-66.akam.net
TLS Certificate Issuer
CN=DigiCert EV RSA CA G2,O=DigiCert Inc,C=US
CN=DigiCert EV RSA CA G2,O=DigiCert Inc,C=US
TLS Valid From
2026-07-20 00:00:00
2026-07-20 00:00:00
TLS Valid Until
2027-02-03 23:59:59
2027-02-03 23:59:59
First Observed
2026-08-15 11:03:07
2026-08-15 11:03:07
Last Observed
2026-08-15 11:03:07
2026-08-15 11:03:07
Identical-State Observations
1
1
▶ Show Cryptographic Evidence & SHA-256 Hashes ▼ Cryptographic Evidence & SHA-256 Hashes
Title SHA-256
52b5705eea174e567187adaefde5ce3e54ac160ed12cb63bf9fa2646ebdbe4c9
52b5705eea174e567187adaefde5ce3e54ac160ed12cb63bf9fa2646ebdbe4c9
Content SHA-256
7b3f042bef377e8541d80abd3ffa703bbf332f473e72f44d81155e64c4d32335
7b3f042bef377e8541d80abd3ffa703bbf332f473e72f44d81155e64c4d32335
HTTP Body SHA-256
fc7f8b082ea43d5191379208c985b231767f83fa8d71847ecbf6b98b7b9d31be
fc7f8b082ea43d5191379208c985b231767f83fa8d71847ecbf6b98b7b9d31be
robots.txt SHA-256
77d3637072bffad97a963659810fd9ff6c435dd4f40f96081725ec9a91734c5b
77d3637072bffad97a963659810fd9ff6c435dd4f40f96081725ec9a91734c5b
DNS State SHA-256
07fe60dcd3429803ae40fd93fd4d512432ceac68dcb9166a481c8760a737b86c
07fe60dcd3429803ae40fd93fd4d512432ceac68dcb9166a481c8760a737b86c
TLS Certificate SHA-256
b2d2cbff715263d6c0dd7406e6b7243df23cddb80f1495f3ba1501006736355b
b2d2cbff715263d6c0dd7406e6b7243df23cddb80f1495f3ba1501006736355b
Complete Provenance State SHA-256
25c6a377d2555ca54261960f2ec0d424186450fda908257273f99926dd4047c1
25c6a377d2555ca54261960f2ec0d424186450fda908257273f99926dd4047c1
First Seen by GoGuides
2026-01-08 23:52:56
Last Crawled by GoGuides
2026-08-15 11:03:07 (2 hours ago)
Last Record Refresh
2026-08-15 12:14:16 (1 hour ago)
Record Refresh Freshness
Fresh
Last refreshed 1 hour ago
Last refreshed 1 hour ago
Stored Measurement Age
125 days
Trust Record Age
218 days ago
Stored Trust Measurements
11
Measurement Span
125 days across 11 stored measurements
Stability Window
125 days
Current Trust State Since
2026-04-11 18:14:21 (125 days ago)
Days Since Last Change
125 days
Rank/Algo State Changes
1
Trust Record Fingerprint (SHA-256)
c34a7cbce892e5afe75b806bd0aef47791cdc8fb90e5ff4da53faf53d60f7092
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 trust state, including rank, crawl timing, algorithm version, and verification fingerprint.
2026-08-15 12:14:16 | rank 85 | crawled 2026-08-15 11:03:07 | v1c34a7cbce892e5afe75b806bd0aef47791cdc8fb90e5ff4da53faf53d60f7092
2026-08-15 04:23:33 | rank 85 | crawled 2026-08-15 04:20:08 | v1
fff5938e6e532238301da1f603d608dbc9fbf2a4bb7be04359fdf47b08876b66
2026-08-09 04:13:37 | rank 85 | crawled 2026-08-08 23:28:02 | v1
4500b0ebe43971bf73bbfe086e4b03649f263b2fb51b843430f9a4af1c960e68
2026-07-06 11:29:41 | rank 85 | crawled 2026-06-28 06:06:06 | v1
66ebf8f3f680ceedbb8ac4d588dbdb3902d9797daddae33acf46c32740572bcb
2026-05-10 18:17:07 | rank 83 | crawled 2026-05-10 09:37:07 | v1
942334c9772b29103e3a11eeef87638a1ab2c1359c5ce6c4b16ca3af8d01ed8b
2026-05-07 17:02:44 | rank 85 | crawled 2026-05-04 02:32:07 | v1
03c4846647c7055352b2b3f703e972095f2a700b7622529c3fc098f3a69be13a
2026-05-03 18:04:29 | rank 85 | crawled 2026-05-03 14:32:06 | v1
6e62a2ba70745626fa6a9c95c2000af19155c0d5e48eba3fd1fa347c2f4261ee
2026-05-03 06:08:40 | rank 85 | crawled 2026-04-27 14:31:04 | v1
0164e9ed7c817d15cd27e321beb9b863244558d18b68f66ac2432306b70ef6f3
2026-04-26 05:57:29 | rank 85 | crawled 2026-04-21 14:31:05 | v1
08dff743f73fa462b2f611527d636260efe7def5932341379fb9b350bed52ca7
2026-04-15 13:19:27 | rank 85 | crawled 2026-04-15 05:30:13 | v1
39bb90ff85f1b75b8412a744b5236634d1c1af12579e187d9455c160da5b4624
Trust Favicon Previews
These favicons are generated directly from GoGuides trust measurements for the site. They are not decorative — the design is derived from the same data used to evaluate the domain (AI Rank and crawl timing). Because the favicon is generated from these measurements, the same inputs always produce the same trust favicon. Each favicon is therefore unique to the website it represents. If the favicon ever appears different elsewhere, verify the record here to confirm the current measured state.
Related GoGuides AI Visibility & Trust Utilities
These GoGuides utilities work together: explain crawler activity, inspect AI visibility gaps, compare robots.txt with trust-layer signals, check verified text records, and activate a public Trust Signal when a domain is ready.