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
6,961
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
43,332
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
97,767

Top Open Ports

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

Port Open IPs
143 3,511
110 3,456
25 3,379
443 2,788
80 2,368
8080 1,349
161 507
2000 358
9080 338
49152 326
81 318
8001 311
5060 309
8888 304
88 287