🐻 Bear necessities for state management in React
gumroad.com
Paid content
Categories: Development
Start selling what you know, see what sticks, and get paid. Simple and effective.
Website Overview
An established domain and managed infrastructure suggest continuity of operations and may support dependable delivery, although neither guarantees service quality. Page metadata, canonical configuration and social previews work together to provide more consistent search and sharing presentation.
Domain and Registration
Registered in 2009, this domain has about 17 years of history. That suggests continuity, although ownership and purpose may have changed. Transfer-protection status is present, helping reduce the risk of unauthorized domain transfers. The domain uses the common .com extension, which is not an independent safety signal.
DNS and Email
Nameservers are provided by Cloudflare, indicating managed DNS hosting. MX records point to the Google Workspace email service. No CNAME was found; the observed records resolve directly to addresses. SPF and DMARC are configured. DKIM status is unknown. TXT records include verification markers for Google, Microsoft. Such markers may also remain after a service stops being used.
TLS and Certificates
The public key uses EC with 256 bits. The server supplied a complete certificate chain. No organization name is present in the certificate; the available fields are consistent with domain validation. The certificate was issued within the Google Trust Services cloud or CDN ecosystem. The certificate's total validity is about 90 days, consistent with a short renewal cycle.
HTTP and Browser Security
The response lacks these common security headers: Referrer-Policy, Permissions-Policy, clickjacking protection. No X-Powered-By header was found, reducing one common source of backend fingerprinting information. The cf-ray response header indicates a CDN or caching proxy in the delivery path. No obvious internal addresses or debug information were found in the headers. The Server header identifies cloudflare without an exact version.
Technology Stack Analysis
The public page identifies Cloudflare without precise versions, leaving fewer clues for version-specific scanning.
Search and Social Sharing
The title has 42 characters, within a common display range. A meta description is present, with 81 characters. The observed directives allow indexing and link following. No Generator meta tag is publicly exposed. A viewport declaration is present, providing a basis for mobile layout.
Hosting and Email
Pages, Search and Sharing
| Meta description | Start selling what you know, see what sticks, and get paid. Simple and effective. |
|---|---|
| Canonical URL | https://gumroad.com/about |
| Language | English (default) |
| Twitter Card | Not detected |
Social Sharing Preview
5 fieldsrobots.txt (opens in a new tab)
1 rulesAll bots 0 allowed · 1 disallowed
/purchases/
No matching rules.
Sitemaps
50- https://public-files.gumroad.com/sitemap/categories/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/merchant-center/feed.xml(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2011/10/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2011/11/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2011/12/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2011/4/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2011/5/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2011/6/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2011/8/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2011/9/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2012/1/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2012/10/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2012/11/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2012/12/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2012/2/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2012/3/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2012/4/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2012/5/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2012/6/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2012/7/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2012/8/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2012/9/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2013/1/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2013/10/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2013/11/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2013/12/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2013/2/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2013/3/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2013/3/sitemap2.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2013/4/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2013/5/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2013/6/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2013/7/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2013/8/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2013/9/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2014/1/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2014/10/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2014/11/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2014/12/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2014/12/sitemap2.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2014/12/sitemap3.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2014/2/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2014/3/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2014/4/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2014/5/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2014/6/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2014/6/sitemap2.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2014/7/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2014/8/sitemap.xml.gz(opens in a new tab)
- https://public-files.gumroad.com/sitemap/products/monthly/2014/9/sitemap.xml.gz(opens in a new tab)
Registration details RDAP / WHOIS
| Registrar | Amazon Registrar, Inc. |
|---|---|
| Registered | 2009-07-31 |
| Expires | 2027-07-31 |
| Domain status | client transfer prohibited |
| Nameservers | jeff.ns.cloudflare.com、venus.ns.cloudflare.com |
| DNSSEC | unsigned |
DNS records
| Type | Name | Value | TTL | Priority |
|---|---|---|---|---|
| A | gumroad.com | 104.17.176.98 | 127 | — |
| A | gumroad.com | 104.18.243.99 | 127 | — |
| AAAA | gumroad.com | 2606:4700::6811:b062 | 292 | — |
| AAAA | gumroad.com | 2606:4700::6812:f363 | 292 | — |
| MX | gumroad.com | aspmx.l.google.com | 300 | 1 |
| MX | gumroad.com | alt1.aspmx.l.google.com | 300 | 5 |
| MX | gumroad.com | alt2.aspmx.l.google.com | 300 | 5 |
| MX | gumroad.com | aspmx2.googlemail.com | 300 | 10 |
| MX | gumroad.com | aspmx3.googlemail.com | 300 | 10 |
| NS | gumroad.com | jeff.ns.cloudflare.com | 86260 | — |
| NS | gumroad.com | venus.ns.cloudflare.com | 86260 | — |
| TXT | gumroad.com | MS=ms30035841 | 300 | — |
| TXT | gumroad.com | google-site-verification=PgpLEes7We_6DhccKbUEiYcZ0pdoMFKC9nvJzv5llfo | 300 | — |
| TXT | gumroad.com | google-site-verification=lrFehNfjlR5pdQ9Yl1S3X4-HclWnL2hRE-lp5ciPfYs | 300 | — |
| TXT | gumroad.com | notion-domain-verification=sSdqoXWqKQb9UfQM5R80tQCvesneCxOsRl4uKtCzkZc | 300 | — |
| TXT | gumroad.com | status-page-domain-verification=8vj11whsslmd | 300 | — |
| TXT | gumroad.com | v=spf1 a mx ip4:67.225.137.176 include:sendgrid.net include:stspg-customer.com include:_spf.google.com ~all | 300 | — |
| DMARC | _dmarc.gumroad.com | v=DMARC1; p=none; pct=100; rua=mailto:[email protected]; sp=none; aspf=r; | 300 | — |
TLS and certificates
| Assessment | Normal configuration |
|---|---|
| Supported protocols | TLSv1.2、TLSv1.3 |
| Negotiated protocol | TLSv1.3 |
| Certificate subject | gumroad.com |
| Issuer | Google Trust Services |
| Valid until | 2026-11-04T20:47 · Remaining when checked: 62 days |
| Verification details | Certificate trust: Passed · Hostname match: Passed |
HTTP response headers
| Header | Value |
|---|---|
| content-type | text/html; charset=utf-8 |
| cache-control | max-age=60, public, stale-while-revalidate=3600, s-maxage=300 |
| server | cloudflare |
| strict-transport-security | max-age=31536000 |
| content-security-policy | default-src https: 'self'; child-src * data: blob:; connect-src 'self' blob: www.dropbox.com api.dropboxapi.com s3.amazonaws.com/gumroad s3.amazonaws.com/gumroad/ s3.amazonaws.com/gumroad-public-storage s3.amazonaws.com/gumroad-public-storage/ gumroad-public-storage.s3.amazonaws.com www.google.com www.gstatic.com *.facebook.com *.facebook.net *.google-analytics.com *.g.doubleclick.net *.googletagmanager.com analytics.google.com *.analytics.google.com analytics.tiktok.com files.gumroad.com d1bdh6c3ceakz5.cloudfront.net entitlements.jwplayer.com *.braintreegateway.com www.paypalobjects.com *.paypal.com *.braintree-api.com iframe.ly iframely.net help.gumroad.com unpkg.com/@lottiefiles/[email protected]/ gumroad.com wss://cable.gumroad.com assets.gumroad.com; font-src * data: blob:; frame-src * data: blob:; img-src * data: blob:; media-src * data: blob:; object-src * data: blob:; script-src 'self' 'unsafe-eval' ajax.cloudflare.com static.cloudflareinsights.com js.stripe.com api.stripe.com *.braintreegateway.com *.braintree-api.com www.paypalobjects.com *.paypal.com *.google-analytics.com *.googletagmanager.com optimize.google.com www.googleadservices.com www.google.com www.gstatic.com *.facebook.net *.facebook.com www.dropbox.com s.ytimg.com cdn.iframe.ly platform.twitter.com cdn.jwplayer.com *.jwpcdn.com gumroad.us3.list-manage.com analytics.twitter.com analytics.tiktok.com help.gumroad.com unpkg.com/@lottiefiles/[email protected]/ gumroad.com assets.gumroad.com 'nonce-VBspzxWR+yeYf0DegpcG/rdYoJD8iYU1JhjbWojyhOY=' 'unsafe-inline'; style-src 'self' 'unsafe-inline' s.ytimg.com optimize.google.com fonts.googleapis.com assets.gumroad.com; worker-src * data: blob: |
| x-content-type-options | nosniff |
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