indexo.dev

numworks.com

.com crawl

First seen 2026-05-04 · Last seen 2026-05-11 · ok HTTP/1.1 200 4320 ms crawled 2026-05-11

US · 18.165.122.71 · AS16509 Amazon.com, Inc.

Reputation 89/100 weak security headers dmarc monitor-only

Classifying

HTML metadata

Title
NumWorks
Description
Discover the NumWorks graphing calculator: intuitive and easy to use, it makes every high schooler a math person!
Language
en
Translations
  • en
  • fr
  • it
  • nl
  • pt

Open Graph

url
https://www.numworks.com/
title
NumWorks Graphing Calculator
description
The graphing calculator that makes everybody a math person.

Technology

CDN
Amazon CloudFront
Server
nginx

Social

Registration

Registrar
Gandi SAS
Created
2015-10-01
Expires
2028-10-01 865 days left
Updated
2026-02-13
Name servers
  • ns-1049.awsdns-03.org
  • ns-2033.awsdns-62.co.uk
  • ns-462.awsdns-57.com
  • ns-599.awsdns-10.net

DNS records live

NS
  • ns-1049.awsdns-03.org
  • ns-2033.awsdns-62.co.uk
  • ns-462.awsdns-57.com
  • ns-599.awsdns-10.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 4 TXT records
  • sending_domain1052313=0b24388c1be4066bcb16ed6e9175e18e753e28e48a45b86acbcea1fd0a70726d
  • brevo-code:f254570148aaa58b72f93d95d03468b3
  • pardot1052313=c2c77b1a515a8acaef8c806bafd1dec885ea2754dc639bb4eab9ab561a59bfe8
  • pardot1052313=e30c5732e0726434139e1a5731c249b988247fb9df3bd653d329de68d71d448b

Email authentication partial

SPF
v=spf1 include:spf.mailjet.com include:_spf.google.com include:servers.mcsv.net include:amazonses.com include:_spf.salesforce.com ~all
softfail (~all)
DMARC
v=DMARC1; p=none; rua=mailto:postmaster@numworks.com
policy: none (monitoring only)
DKIM
Show 5 DKIM selectors
  • google: v=DKIM1; k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDVZy/BoWWlMA1RtPmHHbn3Gc/3pHNl3jBRBUQR4TLea62OGJBCNWdkxmgAJcO2Wl2t647TuBt0LwlxdiBTgf…
  • k1: k=rsa; p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDbNrX2cY/GUKIFx2G/1I00ftdAj713WP9AQ1xir85i89sA2guU0ta4UX1Xzm06XIU6iBP41VwmPwBGRNofhBVR+e6WHUo…
  • mail: k=rsa;p=MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDeMVIzrCa3T14JsNY0IRv5/2V1/v2itlviLQBwXsa7shBD6TrBkswsFUToPyMRWC9tbR/5ey0nRBH0ZVxp+lsmTxid2Y2z…
  • s1: v=DKIM1;k=rsa;p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAtvw6b9i/CTLx9z8+nP1e8ncdye4E0WiDfXw6wPGCVZ2N1pJfr6y4RrUzAQ4bMvAbp5jvqaKv2Dfwp5wi…
  • s2: v=DKIM1;k=rsa;p=MIIBIjANBgkqhkiG9w0BAQEFAAOCAQ8AMIIBCgKCAQEAgQN8+RVxE6gfN0+srADUuTu1a94B9RGrsEBetMiUc4vvPE87/LBvy1rgPEsnVAoCJ2RJPOrGdazGIw75…
selectors probed

Certificate (current)

Amazon RSA 2048 M01
from 2025-09-14 to 2026-10-14
Expires in 147 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 30/100 Checked live page: https://www.numworks.com/

findings
  • missing HSTS
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy

Links to (3)

Linked from (1)