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
6,829
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
49,869
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
97,490

Top Open Ports

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

Port Open IPs
143 3,445
110 3,374
25 3,298
443 2,715
80 2,311
8080 1,315
161 501
2000 350
9080 331
49152 320
81 307
5060 303
8001 302
8888 298
88 280