FTP Control
POP
DHCP Server
HTTP
SMTP
DNS
TFTP
Telnet
HTTPS
DHCP Client
FTP Data
IMAP
SSH
53
20
143
67
22
110
21
80
25
68
23
69
443
HTTP
Telnet
IMAP
SSH
NETBIOS
DHCP SERVER
SMTP
HTTPS
DNS
FTP Data
SMTP
POP
LDAP
DHCP CLIENT
80
143
68
25
139 138 137
443
23
389
53
110
20
67
25
22
Expansion
China
Data
Mobility
Uber
Didi Chuxing
Ride-hailing
Safety
Priority for didi
Transportation options
Company name
Valuable resource
Global growth
Country of origin
Competitor
On-demand transportation
