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
nsidc.org
Current Trust Summary
This GoGuides Trust Record summarizes the current measured state for nsidc.org.
Trust Status
Public trust record
First recorded by GoGuides: 2026-01-08 23:52:53
First recorded by GoGuides: 2026-01-08 23:52:53
Public Eligibility
Eligible for public trust display.
Current Grade
A / AI Rank 75
Crawl Freshness
Old
Last crawled 62 days ago
Last crawled 62 days ago
Domain Provenance Record
18 measurements across 153 days
Stability Window
0 days
Trust Record
Public Trust Record for nsidc.org.
Own this site? Copy this trust record code.
GOGUIDES
Public Trust Record
Rank: A • View Details
Canonical URL
https://nsidc.org/
Matched URL
https://www.nsidc.org/
AI Rank
75
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://nsidc.org/home
Observed Public IP Address
128.138.135.43
Observed Nameservers
ns1.p201.dns.oraclecloud.net, ns2.p201.dns.oraclecloud.net, ns3.p201.dns.oraclecloud.net, ns4.p201.dns.oraclecloud.net
Robots Access
Allowed
allowed
allowed
Page Robots Directive
Not observed
TLS Certificate
CN=YR1,O=Let's Encrypt,C=US
Valid 2026-07-14 04:54:27 to 2026-10-12 04:54:26
Valid 2026-07-14 04:54:27 to 2026-10-12 04:54:26
Observed Provenance States
15 stored states across
15 observations
Observed State Changes
Content: 1
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://nsidc.org/
https://nsidc.org/
Final URL
https://nsidc.org/home
https://nsidc.org/home
HTTP Status
200
200
Redirect Count
1
1
Content Type
text/html; charset=UTF-8
text/html; charset=UTF-8
Response Bytes
193,196
193,196
Canonical URL
https://nsidc.org/home
https://nsidc.org/home
Observed Page Title
Homepage | National Snow and Ice Data Center
Homepage | National Snow and Ice Data Center
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)
128.138.135.43
128.138.135.43
Observed Nameservers
ns1.p201.dns.oraclecloud.net, ns2.p201.dns.oraclecloud.net, ns3.p201.dns.oraclecloud.net, ns4.p201.dns.oraclecloud.net
ns1.p201.dns.oraclecloud.net, ns2.p201.dns.oraclecloud.net, ns3.p201.dns.oraclecloud.net, ns4.p201.dns.oraclecloud.net
TLS Certificate Issuer
CN=YR1,O=Let's Encrypt,C=US
CN=YR1,O=Let's Encrypt,C=US
TLS Valid From
2026-07-14 04:54:27
2026-07-14 04:54:27
TLS Valid Until
2026-10-12 04:54:26
2026-10-12 04:54:26
First Observed
2026-08-15 10:14:29
2026-08-15 10:14:29
Last Observed
2026-08-15 10:14:29
2026-08-15 10:14:29
Identical-State Observations
1
1
▶ Show Cryptographic Evidence & SHA-256 Hashes ▼ Cryptographic Evidence & SHA-256 Hashes
Title SHA-256
117a6b81490c8f8d32957c701b413955a939eb72053ed2f2fa43d015060635ff
117a6b81490c8f8d32957c701b413955a939eb72053ed2f2fa43d015060635ff
Content SHA-256
b570572e9237249bf2ff20ba65c4efa9dc8218f783d28aabc019331228108af2
b570572e9237249bf2ff20ba65c4efa9dc8218f783d28aabc019331228108af2
HTTP Body SHA-256
71b090bdd1e9adf084ecc096dbc992f37bb7260dc74ee07762ba5d49e553cabe
71b090bdd1e9adf084ecc096dbc992f37bb7260dc74ee07762ba5d49e553cabe
robots.txt SHA-256
608fc55abdfe7d5e8a07db48156af3be6a86fcb87bbc91ad77e6f0651c18aa76
608fc55abdfe7d5e8a07db48156af3be6a86fcb87bbc91ad77e6f0651c18aa76
DNS State SHA-256
083ecebe6ef40ac3f8ae4d007612f96d5f3bc68dc1003bc1e8fa6d131bfbb297
083ecebe6ef40ac3f8ae4d007612f96d5f3bc68dc1003bc1e8fa6d131bfbb297
TLS Certificate SHA-256
6a7af6922149e6e262b9662aac55cfa5eb2245cc8ddcec670dd10f14c39a3eb6
6a7af6922149e6e262b9662aac55cfa5eb2245cc8ddcec670dd10f14c39a3eb6
Complete Provenance State SHA-256
66050703af38ef4f9fdcfb542bc6e252f8c2674d0f0e8e572cf1a11f0773b487
66050703af38ef4f9fdcfb542bc6e252f8c2674d0f0e8e572cf1a11f0773b487
First Seen by GoGuides
2026-01-08 23:52:53
Last Crawled by GoGuides
2026-06-14 06:10:51 (62 days ago)
Last Record Refresh
2026-08-15 10:13:31 (2 hours ago)
Record Refresh Freshness
Fresh
Last refreshed 2 hours ago
Last refreshed 2 hours ago
Stored Measurement Age
153 days
Trust Record Age
218 days ago
Stored Trust Measurements
18
Measurement Span
153 days across 18 stored measurements
Stability Window
0 days
Current Trust State Since
2026-08-15 10:13:31 (2 hours ago)
Days Since Last Change
0 days
Rank/Algo State Changes
1
Trust Record Fingerprint (SHA-256)
d3ec83128d7c034a821a1bb60e4e592388587f1edacae295d74a5a0895c61d14
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 10:13:31 | rank 75 | crawled 2026-06-14 06:10:51 | v1d3ec83128d7c034a821a1bb60e4e592388587f1edacae295d74a5a0895c61d14
2026-05-10 10:19:45 | rank 73 | crawled 2026-05-07 18:01:07 | v1
a31d0bb640440fa84f391a0571d3384498b085c6f2d450097215b219b7287476
2026-05-07 18:00:42 | rank 73 | crawled 2026-05-07 08:45:14 | v1
ea28860e7046bfe2e28130d65ad53d8f4bff2b91afb02cf241c5af20e7f59671
2026-05-06 18:12:29 | rank 73 | crawled 2026-05-05 08:45:09 | v1
6eb9ec4fd8e34659d709bd2fce54afd51b9032430600159ba1f03dba7b63f8fd
2026-05-03 10:05:38 | rank 73 | crawled 2026-05-01 08:45:05 | v1
7bfe554ebffe34a33b94cd297e649e7bec1edd61d6629b4b7aa2087282556368
2026-04-29 18:05:26 | rank 73 | crawled 2026-04-28 08:45:07 | v1
6b7857800c1432cd1832c61343c9367b5494973cfa91ca9605d9b413f5abee7d
2026-04-26 10:03:11 | rank 73 | crawled 2026-04-24 08:24:04 | v1
ec1bbe1db4ed91b55ca52baa83e00e081f1189d793aab9be79affe6c503e1966
2026-04-22 17:52:17 | rank 73 | crawled 2026-04-21 08:23:17 | v1
a4d6e6229b07928e8cd69678042b525af03e3e84629493e2903bee43e7d68f09
2026-04-19 09:48:37 | rank 73 | crawled 2026-04-17 06:07:03 | v1
4d8f7b9a559e83383372ee931ee3d871d28ea2e31e984aad07db1f4a3ff40905
2026-04-15 18:05:03 | rank 73 | crawled 2026-04-14 06:07:16 | v1
d88c291271c60ea9c1a7eb77f0af69c29db3cb6cf57d2307deefe59503914478
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.