proto.io

.io crawl

First seen 2026-04-12 · Last seen 2026-05-17 · ok HTTP/1.1 200 3878 ms crawled 2026-05-05

US · 34.198.93.91 · AS14618 Amazon.com, Inc.

Reputation 100/100

Classifying

HTML metadata

Title: Proto.io - Prototyping for all
Description: Build interactive web, iOS, Android, and other low or high-fidelity prototypes right into your web browser. Drag and drop ready-to-use, easily customizable templates, UI components, icons, and more, to prototype in minutes! No coding skills required.
Language: en
Canonical: https://proto.io

Open Graph

url: https://proto.io
title: Proto.io - Prototyping for all
description: Build interactive web, iOS, Android, and other low or high-fidelity prototypes right into your web browser. Drag and drop ready-to-use, easily customizable templates, UI components, icons, and more, to prototype in minutes! No coding skills required.

Technology

Analytics

Google Tag Manager

Fonts

Google Fonts

Third-party hosts loaded (7)

dteyv52hbg2at.cloudfront.net×11
browser.sentry-cdn.com×1
cdnjs.cloudflare.com×1
fonts.googleapis.com×1
fonts.gstatic.com×1
stackpath.bootstrapcdn.com×1
www.googletagmanager.com×1

Social

Contact

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

DNS records live

NS

ns-1089.awsdns-08.org
ns-2015.awsdns-59.co.uk
ns-347.awsdns-43.com
ns-697.awsdns-23.net

MX

10 aspmx.l.google.com
20 alt1.aspmx.l.google.com
20 alt2.aspmx.l.google.com
30 aspmx2.googlemail.com
30 aspmx3.googlemail.com
30 aspmx4.googlemail.com
30 aspmx5.googlemail.com

TXT

Show 11 TXT records

google-site-verification=rVwBQCTOaP7V25QOPhiUw2BmK6QQpxjImrgbCquAOnI
have-i-been-pwned-verification=6ca9ff12298e147c4dc24280e73ed31c
jum4drc7ltottj4h83ng5mngf2
rsd2go7asjg8hnlqlpsavuioof
stripe-verification=d2753ceed7e690ea46f1de806328022eb574060ffe091573a7a010c3b4d63a8c
v=spf1 include:_spf.google.com include:mail.zendesk.com include:amazonses.com include:spf.mail.intercom.io include:servers.mcsv.net include:_spf.mail03-userengage.com ~all
vt1gqmntd53qtt52oqujjvqvpf
yandex-verification: ec5832db81d71ae3
apple-domain-verification=OgFvPhlp8YAeqHr2
atlassian-domain-verification=sT61p48Qf/5aTcmDGfscOs7L4nif3aRBEUGP2ultcnK0hbroL0gHDZREmWBm6KkQ
google-site-verification=dHYNFp8_lz5OObL2pye68eFNRnY2pVagG7j285aQdts

Certificate (current)

Go Daddy Secure Certificate Authority - G2

from 2026-02-07 to 2027-03-11

Expires in 297 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 60/100 Checked live page: https://proto.io/

present

strict-transport-security
x-frame-options

findings

missing Content Security Policy
missing content type protection
missing Referrer Policy
missing Permissions Policy

Header values

x-frame-options: SAMEORIGIN
strict-transport-security: max-age=31536000; includeSubDomains; preload