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kotlinlang.org No paid content found

Categories: Development

Kotlin is a concise and multiplatform programming language by JetBrains. Enjoy coding and build backend, mobile, web, and desktop applications efficiently.

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Updated: 2026-09-01 13:03 Language: English (default) Access: Normal

Profile views 5 Outbound visits 5
Kotlin Programming Language Full homepage screenshot

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 2013, this domain has about 12 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 Squarespace Domains II LLC, a widely used domain service provider. The domain uses the common .org extension, which is not an independent safety signal.

DNS and Email

The lowest TTL is 52 seconds, supporting rapid record changes at the cost of more frequent lookups. Nameservers are provided by Amazon Route 53, indicating managed DNS hosting. MX records point to the Google Workspace email service. CAA records restrict which certificate authorities are authorized to issue certificates. No CNAME was found; the observed records resolve directly to addresses.

TLS and Certificates

The certificate uses an RSA 2048-bit public key, offering broad client compatibility. 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 Amazon cloud or CDN ecosystem. The certificate is valid for about 197 days in total, with 171 days remaining.

HTTP and Browser Security

The response lacks these common security headers: HSTS, CSP, X-Content-Type-Options, Permissions-Policy. No X-Powered-By header was found, reducing one common source of backend fingerprinting information. The x-cache, via 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 contains the custom value AmazonS3.

Technology Stack Analysis

The public page identifies Next.js, Amazon CloudFront without precise versions, leaving fewer clues for version-specific scanning.

Search and Social Sharing

Twitter Card metadata is configured. The title has 27 characters, within a common display range. A meta description is present, with 155 characters. The observed directives allow indexing and link following. No Generator meta tag is publicly exposed.

Hosting and Email

DNSAmazon Route 53
HostingAmazon CloudFront
EmailGoogle Workspace
Location United States flagUnited States 3.168.86.125

Pages, Search and Sharing

Meta descriptionKotlin is a concise and multiplatform programming language by JetBrains. Enjoy coding and build backend, mobile, web, and desktop applications efficiently.
Canonical URLhttps://kotlinlang.org/
LanguageEnglish (default)
Twitter Cardsummary_large_image

Social Sharing Preview

9 fields

robots.txt (opens in a new tab)

0 rules
All bots 0 allowed · 0 disallowed

Sitemaps

1

Registration details RDAP / WHOIS

RegistrarSquarespace Domains II LLC
Registered2013-09-30
Expires2026-09-30
Domain statusclient delete prohibited、client transfer prohibited
Nameserversns-1287.awsdns-32.org、ns-163.awsdns-20.com、ns-1638.awsdns-12.co.uk、ns-953.awsdns-55.net
DNSSECunsigned

DNS records

TypeNameValueTTLPriority
Akotlinlang.org3.168.86.12552—
Akotlinlang.org3.168.86.3152—
Akotlinlang.org3.168.86.6052—
Akotlinlang.org3.168.86.9852—
MXkotlinlang.orgaspmx.l.google.com3001
MXkotlinlang.orgalt1.aspmx.l.google.com3005
MXkotlinlang.orgalt2.aspmx.l.google.com3005
MXkotlinlang.orgalt3.aspmx.l.google.com30010
MXkotlinlang.orgalt4.aspmx.l.google.com30010
NSkotlinlang.orgns-1287.awsdns-32.org172800—
NSkotlinlang.orgns-163.awsdns-20.com172800—
NSkotlinlang.orgns-1638.awsdns-12.co.uk172800—
NSkotlinlang.orgns-953.awsdns-55.net172800—
TXTkotlinlang.orgfacebook-domain-verification=fz49z7zr0ycqj7f9qvli45x3wqzfrh300—
TXTkotlinlang.orggoogle-site-verification=Kldj7OgchCyGYVHwynlh6tOmYdmPHPVno2VxUNeW0TI300—
TXTkotlinlang.orgv=spf1 include:_spf.google.com a:mkto-mailer.jetbrains.com -all300—
CAAkotlinlang.org0 iodef "mailto:[email protected]"3600—
CAAkotlinlang.org0 issue "amazon.com"3600—
CAAkotlinlang.org0 issue "letsencrypt.org"3600—
CAAkotlinlang.org0 issuewild ";"3600—
DMARC_dmarc.kotlinlang.orgv=DMARC1; p=reject; adkim=s; aspf=s;3600—

TLS and certificates

AssessmentNormal configuration
Supported protocolsTLSv1.2、TLSv1.3
Negotiated protocolTLSv1.3
Certificate subjectkotlinlang.org
IssuerAmazon
Valid until2027-02-19T23:59 · Remaining when checked: 171 days
Verification detailsCertificate trust: Passed · Hostname match: Passed

HTTP response headers

HeaderValue
content-typetext/html; charset=utf-8
serverAmazonS3
x-frame-optionsSAMEORIGIN
referrer-policystrict-origin-when-cross-origin

Identified technologies

Next.jsAmazon CloudFront

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