indexo.dev

overflow.io

.io crawl

First seen 2026-04-15 · Last seen 2026-05-11 · ok HTTP/1.1 200 1223 ms crawled 2026-05-11

US · 3.174.113.23 · AS16509 Amazon.com, Inc.

Reputation 100/100

Classifying

HTML metadata

Title
User flow diagramming tool for design teams | Overflow
Description
Create interactive user flows and stunning design presentations to engage your audience in synchronous or asynchronous design critique.
Language
en
Canonical
https://overflow.io/

Open Graph

url
https://overflow.io/
title
User flow diagramming tool for design teams | Overflow
description
Create interactive user flows and stunning design presentations to engage your audience in synchronous or asynchronous design critique.

Technology

CDN
Amazon CloudFront

Social

Contact

Email
Address
44 Montgomery ST STE 300, 94104, San Francisco, United States

DNS records live

NS
  • ns-1275.awsdns-31.org
  • ns-1747.awsdns-26.co.uk
  • ns-456.awsdns-57.com
  • ns-603.awsdns-11.net
MX
Show 6 MX records
  • 1 aspmx.l.google.com
  • 10 alt3.aspmx.l.google.com
  • 10 alt4.aspmx.l.google.com
  • 15 qkocaqkznpzbl2pepuldt5lgstfzt2lmzh5xuthwo6rz6zrjuajq.mx-verification.google.com
  • 5 alt1.aspmx.l.google.com
  • 5 alt2.aspmx.l.google.com
TXT
Show 4 TXT records
  • 453505ihgcf6iu5hucjl34kivo
  • google-site-verification=HzHTWli0b8n3z-5vM1ISzPwCPx1g052u4amPE2bONT4
  • google-site-verification=RAtMJXqGWb-zQ6tceSGGX4yZtsX_X63_QpfLnh2QQrI
  • qo6s55kh6u9lsqjo0igo21b740

Email authentication strong

SPF
v=spf1 include:_spf.google.com include:spf.mandrillapp.com include:mail.zendesk.com include:amazonses.com include:servers.mcsv.net include:eu.transmail.net include:_spf.mail03-userengage.com ~all
softfail (~all)
DMARC
v=DMARC1; p=reject; rua=mailto:re+qmvplnbbobt@dmarc.postmarkapp.com; fo=1; ruf=mailto:dmarc-forensic@overflow.io; sp=none; aspf=r; adkim=r;
policy: reject (enforced) · sp=none
DKIM
  • google: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDB+pv0E6b0tFJXa4rLScN9ijhyhoY15RJP7tGhXSYjPSAXRgJYpp7Lo8q3PZBZsoYC7B4VtoKzDdRqakYDg9…
  • k1: k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDbNrX2cY/GUKIFx2G/1I00ftdAj713WP9AQ1xir85i89sA2guU0ta4UX1Xzm06XIU6iBP41VwmPwBGRNofhBVR+e6WHUo…
  • k2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv2aC2KjGKLOwTweBY5A9RpjsxaBXR9r7OAU6U8/zn92ivImI75naUujWbItRI/QmL1jy5PWGqLwoUA…
selectors probed

Certificate (current)

Amazon RSA 2048 M04
from 2025-08-06 to 2026-09-04
Expires in 107 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 70/100 Checked live page: https://overflow.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
SAMEORIGIN
x-content-type-options
nosniff
strict-transport-security
max-age=31536001; includeSubDomains; preload

Links to (10)

Linked from (2)