indexo.dev

blackfire.io

.io crawl

First seen 2026-04-11 · Last seen 2026-05-18 · ok HTTP/1.1 200 1591 ms crawled 2026-05-18

IE · 176.34.185.46 · AS16509 Amazon.com, Inc.

Reputation 94/100 dmarc monitor-only

Classifying

HTML metadata

Title
Crush performance bottlenecks | Blackfire PHP & Python Observability
Description
Blackfire's continuous observability solution empowers developers to monitor their applications' real-time behavior and proactively identify existing bottlenecks or the consequences of upcoming changes before they reach production.
Language
en
Generator
Gatsby 5.16.1

Open Graph

title
Crush performance bottlenecks | Blackfire PHP & Python Observability
locale
en_US
site name
Blackfire.io
description
Blackfire's continuous observability solution empowers developers to monitor their applications' real-time behavior and proactively identify existing bottlenecks or the consequences of upcoming changes before they reach production.

Technology

CMS
Gatsby
Social widgets
  • YouTube Embed

Third-party hosts loaded (1)

  • www.youtube-nocookie.com×1

Social

DNS records live

NS
  • ns-1052.awsdns-03.org
  • ns-2035.awsdns-62.co.uk
  • ns-350.awsdns-43.com
  • ns-710.awsdns-24.net
MX
  • 1 aspmx.l.google.com
  • 10 alt3.aspmx.l.google.com
  • 10 alt4.aspmx.l.google.com
  • 5 alt1.aspmx.l.google.com
  • 5 alt2.aspmx.l.google.com
TXT
Show 5 TXT records
  • MS=ms11904085
  • MS=ms69184098
  • fastly-domain-delegation-tpZvUetVYIfV4L1-20250326
  • google-site-verification=efN00wMbla3yXGdsCd9wxT4__rZPcRdHQ2AfWvACxLs
  • google-site-verification=j2nx-D0nXVb2FqtEd6pBh4Mc5Gdh0YyX-2W12hNDQl4

Email authentication partial

SPF
v=spf1 mx a include:mail.zendesk.com include:sendgrid.net include:spf.recurly.com include:_spf.google.com ~all
softfail (~all)
DMARC
v=DMARC1;p=none;pct=100;rua=mailto:dmarc-rua@platform.sh;ruf=mailto:dmarc-ruf@platform.sh;fo=1
policy: none (monitoring only)
DKIM
  • smtpapi: k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDPtW5iwpXVPiH5FzJ7Nrl8USzuY9zqqzjE0D1r04xDN6qwziDnmgcFNNfMewVKN2D1O+2J9N14hRprzByFwfQW76…
selectors probed

Certificate (current)

Amazon RSA 2048 M04
from 2026-03-18 to 2026-10-02
Expires in 135 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 70/100 Checked live page: https://www.blackfire.io

present
  • strict-transport-security
  • x-frame-options
  • x-content-type-options
findings
  • missing Content Security Policy
  • missing Referrer Policy
  • missing Permissions Policy
Header values
x-frame-options
DENY
x-content-type-options
nosniff
strict-transport-security
max-age=31536000; includeSubDomains; preload

Links to (4)

Linked from (2)