Check-Host.cc

Autonomous System

AS4837 · China Unicom

Aggregated from public BGP, CT logs, our scan layer, honeypots and global probes.

Announced IPs
59.4M
IPv4
IPv4 Prefixes
1,197
IPv6 Prefixes
533
Hosted Domains
50,973
resolve into this AS
Peers
56
Customers
88

AS Profile

AS Name
China Unicom
Also known as
AS-CNCGROUP
AS Type
NSP
Scope
Regional
Traffic
10-20Tbps
IRR AS-SET
AS4837:AS-CNCGROUP
RIR
APNIC
Country
CN
Allocated
2001-09-17

RPKI Validity

Total ROAs
10,964
Valid Prefixes
1,478
NotFound
252
Announced (BGP)
1,730
RPKI Coverage
85.4%

Geographic Footprint

Countries where this AS's scanned IPs are geolocated, by open-IP count.

CN
414,033
HK
275
RU
6
SG
5

Top Open Ports

Most common open ports across IPs in this AS (last 30 days).

Port Open IPs
21 12,206
19000 10,824
443 8,651
80 8,391
22 4,010
8080 3,549
8443 3,402
8000 3,247
8088 3,071
8081 2,953
7547 2,890
8888 2,260
23 2,183
8001 2,118
8090 1,757