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Bundle, install, and run JavaScript & TypeScript — all in Bun. Bun is a fast JavaScript runtime & toolkit with a bundler, test runner, and npm-compatible package manager built in.

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Updated: 2026-09-01 10:43 Language: English (default) Access: Normal

Profile views 12 Outbound visits 7
Bun Full homepage screenshot

Website Overview

Several search or sharing settings need attention. Together they may make snippets, preview images or preferred URLs less consistent across platforms. An active inbound-mail setup with incomplete authentication may leave the domain more open to impersonation. Provider hosting alone does not close that gap.

Domain and Registration

The registrar, MarkMonitor Inc., specializes in corporate domain and brand management, suggesting attention to domain asset protection. Transfer-protection status is present, helping reduce the risk of unauthorized domain transfers. The domain has about 5 years of registration history; its current configuration provides more context than age alone. The domain uses the common .sh 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 Google Workspace 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, X-Content-Type-Options, Referrer-Policy, 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 React, Tailwind CSS, Cloudflare, Vercel without precise versions, leaving fewer clues for version-specific scanning.

Search and Social Sharing

The meta description has 179 characters and may be shortened in search results. The canonical URL points to another host: https://bun.com/. Search engines may consolidate indexing signals there. Twitter Card metadata is configured. JSON-LD includes Organization data, helping describe the organization as an entity. The title has 42 characters, within a common display range.

Hosting and Email

DNSCloudflare
HostingVercel
EmailGoogle Workspace
Location Location unknown 104.26.4.138

Pages, Search and Sharing

Meta descriptionBundle, install, and run JavaScript & TypeScript — all in Bun. Bun is a fast JavaScript runtime & toolkit with a bundler, test runner, and npm-compatible package manager built in.
Canonical URLhttps://bun.com/
LanguageEnglish (default)
Twitter Cardsummary_large_image

Social Sharing Preview

7 fields

robots.txt (opens in a new tab)

2 rules
All bots 1 allowed · 1 disallowed
  • Allow/
  • Disallow/readme

Sitemaps

1

Registration details RDAP / WHOIS

RegistrarMarkMonitor Inc.
Registered2021-08-16
Expires2028-08-16
Domain statusclientDeleteProhibited https://icann.org/epp#clientDeleteProhibited、clientTransferProhibited https://icann.org/epp#clientTransferProhibited、clientUpdateProhibited https://icann.org/epp#clientUpdateProhibited
Nameservershans.ns.cloudflare.com、naomi.ns.cloudflare.com
DNSSECunsigned

DNS records

TypeNameValueTTLPriority
Abun.sh104.26.4.138300—
Abun.sh104.26.5.138300—
Abun.sh172.67.70.226300—
AAAAbun.sh2606:4700:20::681a:48a290—
AAAAbun.sh2606:4700:20::681a:58a290—
AAAAbun.sh2606:4700:20::ac43:46e2290—
MXbun.shaspmx.l.google.com36001
MXbun.shalt1.aspmx.l.google.com36005
MXbun.shalt2.aspmx.l.google.com36005
MXbun.shalt3.aspmx.l.google.com360010
MXbun.shalt4.aspmx.l.google.com360010
NSbun.shhans.ns.cloudflare.com86400—
NSbun.shnaomi.ns.cloudflare.com86400—
TXTbun.shcursor-domain-verification-5p21cc=8cxGXzcACCGQ8rIilPgJZib1c300—
TXTbun.shgoogle-site-verification=8tTbK_Ha58p_ky7XkbSVJD3E-1Cah_sixJwuoLV7uTo300—
TXTbun.shgoogle-site-verification=V5rdoysBB3bQNxvdbgL0njjkR5ufY_PxfUD6voW2Blo300—
TXTbun.shgoogle-site-verification=g5pTH4JY35JcSqcmMHwCos8L8CQPvG8NQnb1n81fqgA300—
TXTbun.shgoogle-site-verification=hoLJHMr9fqqFedwduPegjN-iEuDDv_dmSO-b9EaECXo300—
TXTbun.shv=spf1 include:spf.efwd.registrar-servers.com include:_spf.google.com ~all300—

TLS and certificates

AssessmentNormal configuration
Supported protocolsTLSv1.2、TLSv1.3
Negotiated protocolTLSv1.3
Certificate subjectbun.sh
IssuerGoogle Trust Services
Valid until2026-11-22T18:41 · Remaining when checked: 82 days
Verification detailsCertificate trust: Passed · Hostname match: Passed

HTTP response headers

HeaderValue
content-typetext/html; charset=utf-8
cache-controlpublic, max-age=0, must-revalidate
servercloudflare
strict-transport-securitymax-age=63072000
access-control-allow-origin*

Identified technologies

ReactTailwind CSSCloudflareVercel

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