SANS ISC / DShield

SANS Internet Storm Center: look up an IP to see how often it has attacked the sensors of thousands of volunteers, and on which ports.

Open SANS ISC / DShield ↗

https://isc.sans.edu/

Type
Website
Cost
Free
Touches the target?
No, passive
Account needed
No
Category
IP & network
Link status
Online, checked 2026-09-26

Takes

Gives you

  • reputation
  • port service

Search SANS ISC / DShield directly

Opens SANS ISC / DShield in a new tab. Your search goes straight from your browser to SANS ISC / DShield, not through this site. To search many tools at once, use the launcher.

Similar tools

Community database of reported malicious IPs. Shows abuse reports, a confidence score, the ISP and the usage type.

  • Website
  • Freemium

TakesIP addressDomain

Community threat-intelligence exchange. Look up an IP, domain or file hash to see the reports and campaigns it appears in.

  • Website
  • Free
  • Account

TakesIP addressDomainFile hash

Official registry lookup for IP ranges and networks in North America: who holds an address block and their contacts.

  • Website
  • Free

TakesIP addressCompany

Checks an IP address or domain against 100+ email spam blocklists at once.

  • Website
  • Freemium

TakesIP addressDomain

Community blocklist of IPs caught attacking servers (SSH, mail, web logins). Search an IP to see what it was reported for.

  • Website
  • Free

TakesIP address

Database of names, emails and IPs used by spam bots on forms and forums. Check whether an address is a known bot.

  • Website
  • Freemium
  • Account

TakesUsernameEmail addressIP address