Network Port
IMAPS
Port 993
Well-known service: IMAPS
Total Hosts
1,424,014
last 90 d
Countries
12
distinct
Top Software
Tengine
from banners
CVE Hits
—
NVD feed pending
Service Detail
Port
993
Protocol
TCP / UDP
Service
IMAPS
IANA Reserved
—
Common Risk
—
Top Software on this Port
| Server / Banner | Hits |
|---|---|
| Tengine | 4,037 |
| nginx | 148 |
| squid/3.5.20 | 92 |
| Apache | 81 |
| openresty | 60 |
| nginx/1.18.0 (Ubuntu) | 52 |
| nginx/1.24.0 (Ubuntu) | 45 |
| Microsoft-HTTPAPI/2.0 | 42 |
| uvicorn | 33 |
| Microsoft-IIS/10.0 | 32 |
| WebLogic Server 10.3.6.0.0 | 28 |
| ESA | 27 |
Top Countries
Top ASNs
| ASN | Name | IPs |
|---|---|---|
| AS396982 | Google Cloud | 40,924 |
| AS37963 | Alibaba (China) | 11,954 |
| AS12824 | home.pl S.A. | 10,167 |
| AS16276 | OVHcloud | 10,132 |
| AS19551 | Thales/Imperva | 9,567 |
| AS24940 | Hetzner Online | 7,935 |
| AS26496 | GoDaddy | 7,425 |
| AS46606 | Endurance International Group, Inc | 6,617 |
| AS13335 | Cloudflare | 4,448 |
| AS4230 | Claro | 4,380 |
| AS2514 | NTT PC Communications (InfoSphere) | 4,108 |
| AS9488 | — | 3,866 |
Wappalyzer Tech-Stack on Port 993
| Technology | Hosts |
|---|---|
| jQuery | 76 |
| jsDelivr | 38 |
| jQuery UI | 8 |
| Bootstrap | 8 |
| jQuery Migrate | 7 |
| Synology DiskStation | 6 |
| Vue.js | 6 |
| Bootbox.js | 5 |
| Select2 | 5 |
| Underscore.js | 5 |
| RequireJS | 4 |
| jQuery BlockUI | 4 |
Recently Seen on Port 993
Hosts most recently observed with this port open in our scan sweep.
CVE Matches
Published CVEs matched by exact version to the software banner-advertised on this port. A CVE listing does not confirm any individual host is exploitable.
| CVE | Software | CVSS | Severity | Summary |
|---|---|---|---|---|
| CVE-2016-10002 | squid 3.5.20 | 7.5 | N/A | Incorrect processing of responses to If-None-Modified HTTP conditional requests in Squid HTTP Proxy 3.1.10 through 3.1.23, 3.2.0.3 through 3.5.22, and 4.0.1 thr... |