Check-Host.cc

Autonomous System

AS4538 · CERNET-CN

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

Announced IPs
42.61M
IPv4
IPv4 Prefixes
5,153
IPv6 Prefixes
891
Hosted Domains
6,946
resolve into this AS
Peers
38
Customers
12

AS Profile

AS Name
CERNET-CN
Also known as
CERNET
AS Type
Educational/Research
Scope
Not Disclosed
RIR
APNIC
Country
CN
Allocated
2002-08-01

RPKI Validity

Total ROAs
36,795
Valid Prefixes
2,305
NotFound
3,739
Announced (BGP)
6,044
RPKI Coverage
38.1%

Geographic Footprint

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

CN
97,704

Top Open Ports

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

Port Open IPs
143 3,496
110 3,433
25 3,355
443 2,774
80 2,359
8080 1,343
161 504
2000 357
9080 335
49152 325
81 317
8001 309
5060 307
8888 302
888 286