indexo.dev

checkbook.io

.io crawl

First seen 2026-05-03 · Last seen 2026-05-09 · ok HTTP/1.1 200 766 ms crawled 2026-05-09

US · 13.33.235.85 · AS16509 Amazon.com, Inc.

Reputation 100/100

Classifying

HTML metadata

Title
Push payments simplified | Checkbook
Description
Our all-in-one push payments platform offers everything you need to disburse payments at scale. No hassle. No percentages. No hidden fees.
Language
en
Canonical
https://checkbook.io/

Open Graph

url
https://checkbook.io/
title
Push payments simplified | Checkbook
site name
Checkbook
description
Our all-in-one push payments platform offers everything you need to disburse payments at scale. No hassle. No percentages. No hidden fees.

Technology

CDN
Amazon CloudFront
Server
AmazonS3
Analytics
  • Google Tag Manager
Fonts
  • Google Fonts

Third-party hosts loaded (3)

  • fonts.googleapis.com×2
  • fonts.gstatic.com×1
  • www.googletagmanager.com×1

Social

Contact

Email
Phone

DNS records live

NS
  • ns-1458.awsdns-54.org
  • ns-1779.awsdns-30.co.uk
  • ns-329.awsdns-41.com
  • ns-599.awsdns-10.net
MX
  • 1 aspmx.l.google.com
  • 10 aspmx2.googlemail.com
  • 10 aspmx3.googlemail.com
  • 5 alt1.aspmx.l.google.com
  • 5 alt2.aspmx.l.google.com
TXT
Show 9 TXT records
  • apple-domain-verification=jj9qGmmQcg7g5XPR
  • asv=05f6f144e8baa9e04ba692f561e74123
  • citrix-verification-code=c99b1cae-f0d7-4899-bb35-a9aa13d87249
  • facebook-domain-verification=wr7mutm5lg7ftcbe6xsxnr2e9fyvob
  • google-site-verification=L-zwXYTIPUORPFx9Ses2s8LwbvnOHz4rzNwGYUnms2Q
  • slack-domain-verification=7Z2B6arvAIZwPVl5YkGXBroJLVpqkIQyRDdeSOA2
  • sophos-domain-verification=90fc31140a70b7eea0ac98a49d9df87cb56bc6cef2021bebe625c1382fc188a7
  • v=spf2.0/pra include:sendgrid.net include:_spf.google.com include:u5220604.wl105.sendgrid.net ~all
  • LNZPNx24x3hepgwhkh9f8iyrpRHLd2/lPh5Op8sffbo=

Email authentication strong

SPF
v=spf1 include:6408775.spf07.hubspotemail.net include:u5220604.wl105.sendgrid.net include:sendgrid.net include:mail.zendesk.com include:_spf.google.com include:spf.mandrillapp.com ?all
neutral (?all)
DMARC
v=DMARC1; p=reject; sp=reject; rua=mailto:dmarc_agg@vali.email;
policy: reject (enforced) · sp=reject
DKIM
Show 6 DKIM selectors
  • google: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAl1KJIrCk6mjpuLA0JBYMhfxh3axNaxEx3vg1lfk4WdNPPtach50+Vf8kcRwNK/Ix+igHZ+UKI+d3BX…
  • k1: k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDFMCwnnl0OXNghcITJbEUbHaMgeYdcZmXpxHeMSKVxl/IsvP5Tc3no0KG00pEGxctEuSbMzHWYwQ78WrfIGCakFsOjGxB…
  • k2: v=DKIM1; k=rsa; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAv2aC2KjGKLOwTweBY5A9RpjsxaBXR9r7OAU6U8/zn92ivImI75naUujWbItRI/QmL1jy5PWGqLwoUA…
  • s1: k=rsa; t=s; p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAnbuCDjfV4SsqRw1QtGhGLP47xeACwZIq+yxzhWwBBYrtwhIBKmyZtw3sXetypfiRXScf7aFG1xlyrDZ+ht…
  • s2: k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDH3bDDS4dV/Yyuo7gk/1enO5xJvviNvFPQI9U8cLFTRIRi7bgWbyPbLz3VcNThtpqyGRjlIzVzn9frwaqOsLH367…
  • smtpapi: k=rsa; t=s; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDPtW5iwpXVPiH5FzJ7Nrl8USzuY9zqqzjE0D1r04xDN6qwziDnmgcFNNfMewVKN2D1O+2J9N14hRprzByFwfQW76…
selectors probed

Certificate (current)

Amazon RSA 2048 M03
from 2025-08-19 to 2026-09-18
Expires in 121 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 60/100 Checked live page: https://checkbook.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
DENY
strict-transport-security
max-age=63072000; includeSubdomains; preload

Links to (4)

Linked from (1)