Network Port

Port 19

Custom / ephemeral port

Total Hosts

458,314

last 90 d

Countries

distinct

Top Software

—

from banners

CVE Hits

—

NVD feed pending

Service Detail

Port

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

Country	IPs
US	114,422
CN	31,290
KR	20,615
SG	11,086
FR	9,728
BR	8,685
TW	7,681
AU	6,068
TR	4,935
IR	4,928
IL	3,667
HK	2,109

Top ASNs

ASN	Name	IPs
AS396982	Google Cloud	63,663
AS37963	Alibaba (China)	23,421
AS9488	—	11,116
AS4230	Claro	7,679
AS1659	Taiwan Academic Network(TANet)	6,877
AS13335	Cloudflare	6,684
AS7472	—	6,614
AS40509	—	5,925
AS20214	Comcast - Miami/Pompano	5,618
AS9509	—	5,172
AS98	—	5,064
AS9321	—	5,047

Recently Seen on Port 19

Hosts most recently observed with this port open in our scan sweep.

103.120.88.115 211.154.24.135 183.245.146.110 34.49.131.167 185.71.78.104 168.221.106.64 34.36.83.77 45.149.161.48 165.242.154.235 202.226.27.212 171.255.192.231 43.137.89.136 165.242.6.231 175.126.168.255 168.183.40.41 34.120.14.254 137.132.132.232 144.49.230.43 165.242.107.145 147.47.34.40

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.