Report ID: #85EFC1EE

nbviewer.org

Item: nbviewer.org
Rating: 5
Author: AceObserve

United States Valid HTTPS 13.4 years Updated 1 month ago

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100

Very Safe

AceObserve · nbviewer.org — Report card — AceObserve · nbviewer.org

NBViewer.org Trust Review

nbviewer.org is a notebook-viewing tool tied to the Jupyter ecosystem, used to display notebooks in a browser without requiring the full interactive environment. Its long registration history and valid HTTPS certificate are practical trust signals, though users should still verify the exact page they open.

Overview Technical Security WHOIS

Quick facts

Before diving in: nbviewer.org is registered through Key-Systems GmbH and currently hosted in United States. SSL on the apex host returned: OK.

Why age matters

A 13.4-year track record is not proof of legitimacy, but it does mean nbviewer.org has had time to accumulate (or shed) reputation signals across security databases.

TLS / SSL state

The TLS handshake to nbviewer.org returned: OK. Modern browsers will warn users when this fails, so a passing check is required for any commercial site.

Where nbviewer.org is hosted

nbviewer.org is operated from United States via Unknown. If you transact with this site, this is the legal jurisdiction your data will likely traverse.

What the score tells you

nbviewer.org's automated trust score reflects whether it follows industry-standard infrastructure practices. It is intentionally blind to content, branding and customer reviews.

Score summary

nbviewer.org → 100/100 (very_safe). The value is recomputed every refresh from the latest public records and does not include editorial opinion.

Technical Information

IP Address

151.101.1.91

Server Location

United States

ISP / Provider

Unknown

SSL Certificate

Valid HTTPS

SSL Issuer

R13

Valid Until

2026-06-13

Registrar

Key-Systems GmbH

Registered On

2013-01-05

Expires On

2029-01-05

Domain Age

13.4 years

What looks good

Uses modern HTTPS endpoints
Hosting on an established ISP network
Consistent A and AAAA records
Subject Alternative Names cover the domain correctly

What to watch

Privacy-protected WHOIS — operator not directly visible
Registrar based outside the target audience country
No corporate footprint linked to the domain

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Frequently Asked Questions

What ISP serves nbviewer.org?

The current network announcement comes from Unknown, with the IP geo-located in United States.

Where do I file a complaint about nbviewer.org?

You can file a takedown notice with the registrar (Key-Systems GmbH) or the hosting ISP (Unknown). Each maintains a public abuse channel.

Does nbviewer.org have IPv6?

Our DNS lookup returns AAAA-record presence as part of the report. If absent, nbviewer.org is currently IPv4-only.

When was nbviewer.org's certificate last checked?

SSL data on nbviewer.org is recomputed on every refresh. The summary box at the top shows the timestamp of the latest probe.

Is nbviewer.org safe for online payments?

Infrastructure check returned SSL OK and a "very_safe" score. This is a baseline; never enter card data on a site you have not verified through other channels.

Related Domains

This report is generated automatically from public technical signals. It is not legal or financial advice.