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A ridiculous collection of web development cheatsheets

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Updated: 2026-09-01 08:59 Language: English (default) Access: Normal

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Website Overview

An advisory match combined with missing browser safeguards may increase exposure if the affected component is active. Deployment-specific verification and remediation deserve priority. Identifiable technologies and additional version or configuration signals make the service easier to fingerprint, which may help targeted scanners narrow their checks.

Domain and Registration

Registered in 2017, this domain has about 9 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 registrar is NameCheap, Inc., a widely used domain service provider. The domain uses the common .io extension, which is not an independent safety signal.

DNS and Email

The observed email authentication setup is incomplete: DMARC is missing. Nameservers are provided by Cloudflare, indicating managed DNS hosting. MX records point to the registrar-servers.com email service. No CNAME was found; the observed records resolve directly to addresses. TXT records include verification markers for Google. 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: CSP, Permissions-Policy, clickjacking protection. CORS permits any origin to read this response. This is common for public resources; sensitive responses need narrower handling. 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.

Technology Stack Analysis

The public page identifies Astro 4.5.4, Tailwind CSS, Google Analytics, Cloudflare, with exact versions exposed for 1 technologies. These details can narrow vulnerability checks, although exposure alone is not a vulnerability. The advisory source OSV places Astro 4.5.4 in the affected range of GHSA-2pvr-wf23-7pc7, GHSA-49w6-73cw-chjr, GHSA-4g3v-8h47-v7g6, GHSA-5ff5-9fcw-vg88, GHSA-7pw4-f3q4-r2p2 等 10 项. Verify the deployed version and relevant configuration before drawing conclusions about exploitability. Updating affected components should be a priority.

Search and Social Sharing

The Generator tag identifies Astro v4.5.4, making the publishing system easier to fingerprint. The title has 44 characters, within a common display range. A meta description is present, with 54 characters. The observed directives allow indexing and link following. A viewport declaration is present, providing a basis for mobile layout.

Hosting and Email

DNSCloudflare
HostingCloudflare
Emailregistrar-servers.com
Location Location unknown 104.21.55.233

Pages, Search and Sharing

Meta descriptionA ridiculous collection of web development cheatsheets
Canonical URLhttps://devhints.io
LanguageEnglish (default)
Twitter CardNot detected

Social Sharing Preview

5 fields

robots.txt (opens in a new tab)

0 rules

No rules found

Sitemaps

1

Registration details RDAP / WHOIS

RegistrarNameCheap, Inc.
Registered2017-09-07
Expires2026-09-07
Domain statusclientTransferProhibited https://icann.org/epp#clientTransferProhibited
Nameserverseric.ns.cloudflare.com、jean.ns.cloudflare.com
DNSSECunsigned

DNS records

TypeNameValueTTLPriority
Adevhints.io104.21.55.233300—
Adevhints.io172.67.174.41300—
AAAAdevhints.io2606:4700:3033::6815:37e9300—
AAAAdevhints.io2606:4700:3035::ac43:ae29300—
MXdevhints.ioeforward1.registrar-servers.com30010
MXdevhints.ioeforward2.registrar-servers.com30010
MXdevhints.ioeforward3.registrar-servers.com30010
MXdevhints.ioeforward4.registrar-servers.com30015
MXdevhints.ioeforward5.registrar-servers.com30020
NSdevhints.ioeric.ns.cloudflare.com86400—
NSdevhints.iojean.ns.cloudflare.com86400—
TXTdevhints.iogithub-verification=RuR7a9g5eNWvfjQXQsgAzMPEY8g9sejfyBQDX9WJ300—
TXTdevhints.iogoogle-site-verification=CNnl0tRvrOlEfcdlDnQxAHJDDNQSMJvovteZRDey81M300—
TXTdevhints.iov=spf1 include:spf.efwd.registrar-servers.com ~all300—

TLS and certificates

AssessmentNormal configuration
Supported protocolsTLSv1.2、TLSv1.3
Negotiated protocolTLSv1.3
Certificate subjectdevhints.io
IssuerGoogle Trust Services
Valid until2026-11-25T10:29 · Remaining when checked: 85 days
Verification detailsCertificate trust: Passed · Hostname match: Passed

HTTP response headers

HeaderValue
content-typetext/html; charset=utf-8
cache-controlpublic, max-age=10800, must-revalidate
servercloudflare
strict-transport-securitymax-age=2592000; includeSubDomains; preload
x-content-type-optionsnosniff
referrer-policystrict-origin-when-cross-origin
access-control-allow-origin*

Identified technologies

Astro 4.5.4Tailwind CSSGoogle AnalyticsCloudflare

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