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
6,920
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
30,258
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
97,576

Top Open Ports

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

Port Open IPs
143 3,468
110 3,409
25 3,327
443 2,739
80 2,337
8080 1,325
161 504
2000 352
9080 334
49152 323
81 314
5060 304
8001 304
8888 301
88 282