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
50,958
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
9,287
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
413,767
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 12,162
19000 10,784
443 8,625
80 8,375
22 3,999
8080 3,541
8443 3,390
8000 3,233
8088 3,057
8081 2,942
7547 2,878
8888 2,255
23 2,176
8001 2,111
8090 1,752