DNSApe | Fast Network Tools

Settings

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Initial Request

HTTP Headers

HTTP headers are metadata sent between browsers and servers during web requests. They control caching, security, authentication, and content negotiation. Response headers reveal server configuration and security posture.

t.co

Request Headers

GET / HTTP/1.1

Accept:	/
Accept-Language:	en-us
User-Agent:	Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:64.0) Gecko/20100101 Firefox/64.0
Host:	t.co
Connection:	close

Response Headers

HTTP/1.1 500 Internal Server Error

Connection:	close
Content-Length:	0
cache-control:	no-cache, no-store, max-age=0
server:	envoy
Accept-Ranges:	bytes
Date:	Fri, 13 Feb 2026 01:28:39 GMT
Via:	1.1 varnish
X-Served-By:	t4_p, cache-sjc1000111-SJC
X-Cache:	MISS
X-Cache-Hits:	0
Strict-Transport-Security:	max-age=300
x-response-time:	0

--- REQUEST ---
GET / HTTP/1.1
Accept: */*
Accept-Language: en-us
User-Agent: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.14; rv:64.0) Gecko/20100101 
Firefox/64.0
Host: t.co
Connection: close

--- RESPONSE ---
HTTP/1.1 500 Internal Server Error
Connection: close
Content-Length: 0
cache-control: no-cache, no-store, max-age=0
server: envoy
Accept-Ranges: bytes
Date: Fri, 13 Feb 2026 01:28:39 GMT
Via: 1.1 varnish
X-Served-By: t4_p, cache-sjc1000111-SJC
X-Cache: MISS
X-Cache-Hits: 0
Strict-Transport-Security: max-age=300
x-response-time: 0

Your IP: 18.97.14.83

About DNSApe

DNSApe is a fast, no-nonsense network diagnostics toolkit built for developers, sysadmins, and security researchers.

Version History

2.0 - 2026-02-13

Complete rewrite

Rebuilt with Laravel 12, Livewire 3, and Tailwind CSS 4
Live ping monitoring with real-time Chart.js visualization
Email Security tool: SPF, DKIM, DMARC validation
REST API with JSON responses (60 req/min)
MCP server for AI assistant integration (Claude, ChatGPT, etc.)
Slack integration with /dns, /whois, /ssl slash commands
Help tooltips explaining each tool and record type
Shareable ping sessions with unique URLs
Pretty/Raw view toggle with persistent preference
Browser-based ping for client-side latency testing
Enhanced WHOIS with domain + IP info combined
Improved SSL certificate error handling

Version 2.1 with performance improvements and bug fixes coming soon.

1.1.3 - 2019-04-30

Moved to new infrastructure, resolving most DNS Traversal issues
Replaced RBL with SSL validation tool

1.1.2 - 2019-04-17

Fixed DNS Traversal issue causing many requests to fail

1.1.1 - 2019-04-16

Minor UI adjustments
Added links to lookups in DNS results
Updated dependencies
Increased session timeout to 1 week to eliminate 419 errors
Updated IP address display
Removed dnsape.com as default lookup

1.1 - 2019-02-15

Several UI adjustments
Dark mode setting is persistent between sessions via cookie
Added GDPR cookie banner for session cookies
Added tool to show client IP in lookup field (settings menu)
Keyboard shortcuts for tools, focusing, text size, copying URLs
Shareable lookup URLs - browser address changes with tool usage
Added links to Github repo and feature voting
Several error handling and bug fixes

1.0.7 - 2019-01-11

Fixed HTTP Headers issue with multiple HTTPS redirects

1.0.6 - 2019-01-09

HTTP Headers now forward to and display HTTPS headers
UI adjustments

1.0.5 - 2019-01-08

Dark Mode!

1.0.4 - 2019-01-07

TLD and subdomain validation fixes

1.0.3 - 2019-01-06

Updated DNS Cache host list
IP address validation improvements
Fixed progress bar bug with failed queries
UI adjustments

1.0.2 - 2019-01-05

IPWhois and Ping now work with IP addresses as well as hostnames
Several validation enhancements reduce errors for many lookups
Several UI adjustments

1.0.1 - 2019-01-04

Added Recent Updates panel
Fixed Whois search for many TLDs
Fixed DNS Traversal for many TLDs
Changed to fluid viewport width
Added Privacy Policy

1.0 - 2019-01-02

Initial release