Network Port
Port 43
Custom / ephemeral port
Total Hosts
496,491
last 90 d
Countries
12
distinct
Top Software
—
from banners
CVE Hits
—
NVD feed pending
Service Detail
Port
43
Protocol
TCP / UDP
Service
—
IANA Reserved
—
Common Risk
—
Top Software on this Port
No banners yet
banner-sweep hasn't fingerprinted a host on this port yet.
Top Countries
Top ASNs
| ASN | Name | IPs |
|---|---|---|
| AS396982 | Google Cloud | 69,000 |
| AS37963 | Alibaba (China) | 24,518 |
| AS19551 | Thales/Imperva | 16,695 |
| AS9488 | — | 9,964 |
| AS13335 | Cloudflare | 9,320 |
| AS7472 | — | 6,267 |
| AS1659 | Taiwan Academic Network(TANet) | 6,253 |
| AS40509 | — | 6,216 |
| AS4230 | Claro | 5,958 |
| AS1715 | — | 5,955 |
| AS98 | — | 5,869 |
| AS20214 | Comcast - Miami/Pompano | 5,186 |
Recently Seen on Port 43
Hosts most recently observed with this port open in our scan sweep.
CVE Matches
No version-matched CVEs
No published CVE exactly matches a software version seen on this port. Banners often omit versions, which limits precise matching.