indexo.dev

ipcalc.info

.info crawl

First seen 2026-04-18 · Last seen 2026-05-12 · ok HTTP/1.1 200 1188 ms crawled 2026-05-12

US · 104.21.84.9 · AS13335 Cloudflare, Inc.

Reputation 100/100

Classifying

HTML metadata

Title
IP/Subnet Calculator | IPv4 CIDR, Netmask & Wildcard | ipcalc.info
Description
Free online IPv4 subnet calculator. Compute CIDR, netmask, wildcard, network and broadcast addresses, host range and binary breakdown. Includes subnet mask reference table, FAQ and RFC links.
Language
en
Canonical
https://ipcalc.info/

Open Graph

url
https://ipcalc.info/
title
IP/Subnet Calculator — ipcalc.info
site name
ipcalc.info
description
Free online IPv4 subnet calculator. CIDR, netmask, wildcard, network/broadcast and binary breakdown.

Technology

CDN
Cloudflare

Registration

Registrar
Soluciones Corporativas IP, SL
Created
2013-09-02
Expires
2026-09-02 105 days left
Updated
2025-09-06
Name servers
  • kate.ns.cloudflare.com
  • art.ns.cloudflare.com

DNS records live

NS
  • art.ns.cloudflare.com
  • kate.ns.cloudflare.com

Email authentication no MX

SPF
not published
DMARC
not published
DKIM
no key found at common selectors

Certificate (current)

WE1
from 2026-04-11 to 2026-07-10
Expires in 52 days

Full certificate history on crt.sh ↗

HTTP security headers

Header hygiene 50/100 Checked live page: https://ipcalc.info/

present
  • strict-transport-security
findings
  • missing Content Security Policy
  • missing frame protection
  • missing content type protection
  • missing Referrer Policy
  • missing Permissions Policy
Header values
strict-transport-security
max-age=15768000; includeSubDomains

Links to (9)

Linked from (2)