SPYSE - A SEARCH ENGINE FOR RECON
Updated: Feb 5, 2021
This post is all dedicated to the cyber intelligence search engine that I became a fan of since I used it for the first time. It is Spyse.
What is Spyse ?

Spyse is a search engine can be used to gather information related to internet assets and it comes in handy while performing passive reconnaissance as part of a security operation.
Spyse is capable enough to provide you with critical information at your fingertips
Below image shows you with various options that Spyse provides you with

Domain: Search any domain to find domain information
IP: Search an IP address to find IP address information
AS: Search Autonomous System (AS) information
CIDR: Find Classless Inter-Domain Routing information
Certificate: Search information about server certificates
Organization: FInd organization info using organization name
CVE: Find Information about any Common Vulnerability Exposure
Technology: Find information based on any technology name
Lets discuss about the awesome arsenal of tools that Spyse provides you at your disposal
Explore detailed information about a domain
General Info
DNS Records
DNS History
Security Score
Technologies
Crawl Results
Current Certificate
Subdomains
WHOIS
Organization
Find Autonomous System Numbers with connected data
General Info
Hosted Domains
IPs with open ports
IPv4 Prefixes
IPv6 Prefixes
Find a DNS PTR record of any IPv4 address
General Info
DNS Records
DNS History
Security Score
Find certificates by a domain name or fingerprint
Find all domains with the same AdSense ID. Helps you find connection between websites
Find related company assets by its name
Logo
Organization
Official website
Categories
Location
Find open ports and vulnerabilities
Find vulnerable domains and IP addresses by CVE ID
Search for technologies on the websites.
Name
Website
Type
Description
Organization
Advanced Search :

Spyse Advanced Search helps to optimize your request and helps you find specific information
You can check here to learn how to utilize the advance search capability of Spyse
They have also provided a video for better understanding
You can also check Syse's youtube channel for more tutorials
You can also use Spyse API, read more about it here
Final Thoughts:
I'm somebody who is really interested in reconnaissance and my experience after using Spyse is really amazing. Its a researcher friendly platform that helps in easing up the entire internet assets recon process.
Hope this post is informational enough.