206208 looking glass

AS4538 China Education and Research Network Center 🇨🇳 CN

Announcing 5,167 prefixes, seen at the RIS collectors.

IPv4 prefixes
5,157
42,948,608 (167,768 × /24)
IPv6 prefixes
10
265 × /48
Upstreams
14
transit providers observed
Peers
8
settlement-free adjacencies
Downstreams
14
transit customers observed
Customer cone
86
ASes reachable through it

Registry and operator data

AS number
AS4538
Name
China Education and Research Network Center
Organisation
CERNET-CN
Country
🇨🇳 CN
RIR
APNIC
Allocated
2002-08-01
Network type
Educational/Research
Scope
Not Disclosed
Peering policy
Open
Website
http://www.edu.cn
PeeringDB
net/13851

RPKI coverage of this AS

Its own announcements, validated against the current ROA set

1,459 valid (28.2%) 2 invalid (0.0%) 3,706 no ROA (71.7%)

Announced prefixes

5,167 in total

Prefix RPKI Peers Sample path First seen
219.222.48.0/20 v4 no ROA 44 237644538 2026-09-18
219.222.64.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.222.64.0/24 v4 RPKI valid 45 237644538 2026-09-18
219.222.80.0/20 v4 no ROA 44 237644538 2026-09-18
219.222.96.0/20 v4 no ROA 44 237644538 2026-09-18
219.222.112.0/20 v4 no ROA 44 237644538 2026-09-18
219.222.128.0/20 v4 no ROA 44 237644538 2026-09-18
219.222.144.0/20 v4 no ROA 44 237644538 2026-09-18
219.222.160.0/19 v4 no ROA 44 237644538 2026-09-18
219.222.192.0/20 v4 no ROA 44 237644538 2026-09-18
219.222.208.0/20 v4 no ROA 44 237644538 2026-09-18
219.222.224.0/19 v4 no ROA 44 237644538 2026-09-18
219.223.0.0/16 v4 no ROA 14 244824538 2026-09-18
219.223.0.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.4.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.6.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.8.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.12.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.16.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.18.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.20.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.21.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.22.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.23.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.24.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.25.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.26.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.28.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.30.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.32.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.36.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.38.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.40.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.42.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.44.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.46.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.48.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.50.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.52.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.54.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.56.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.57.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.58.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.60.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.62.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.64.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.65.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.66.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.68.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.70.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.71.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.72.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.74.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.76.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.77.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.78.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.80.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.82.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.83.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.84.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.86.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.88.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.90.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.92.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.94.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.96.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.100.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.101.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.102.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.104.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.105.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.106.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.108.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.110.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.112.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.114.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.116.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.120.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.122.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.124.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.128.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.130.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.136.0/24 v4 RPKI valid 44 237644538 2026-09-18
219.223.160.0/19 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.160.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.168.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.176.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.190.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.192.0/18 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.192.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.208.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.209.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.210.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.211.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.219.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.220.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.224.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.228.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.232.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.232.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.236.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.240.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.240.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.244.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.248.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.248.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.250.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.223.252.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.253.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.223.254.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.224.0.0/13 v4 no ROA 49 244824538 2026-09-18
219.224.0.0/14 v4 no ROA 43 244824538 2026-09-18
219.224.0.0/15 v4 no ROA 49 244824538 2026-09-18
219.224.0.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.224.16.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.224.32.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.224.48.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.224.64.0/19 v4 no ROA 4 557202376441344538 2026-09-18
219.224.96.0/22 v4 no ROA 40 3454912994538 2026-09-18
219.224.97.0/24 v4 RPKI valid 43 3454964534538 2026-09-18
219.224.104.0/21 v4 no ROA 4 557202376441344538 2026-09-18
219.224.128.0/18 v4 no ROA 4 557202376441344538 2026-09-18
219.224.165.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.224.192.0/19 v4 no ROA 4 557202376441344538 2026-09-18
219.224.224.0/22 v4 no ROA 4 557202376441344538 2026-09-18
219.225.0.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.225.16.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.225.32.0/19 v4 no ROA 4 557202376441344538 2026-09-18
219.225.64.0/18 v4 no ROA 4 557202376441344538 2026-09-18
219.225.128.0/19 v4 no ROA 4 557202376441344538 2026-09-18
219.225.160.0/19 v4 no ROA 4 557202376441344538 2026-09-18
219.225.192.0/19 v4 no ROA 4 557202376441344538 2026-09-18
219.225.224.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.225.240.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.226.0.0/16 v4 no ROA 48 244824538 2026-09-18
219.226.0.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.226.0.0/21 v4 no ROA 4 557202376441344538 2026-09-18
219.226.8.0/22 v4 no ROA 4 557202376441344538 2026-09-18
219.226.12.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.226.13.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.226.14.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.226.15.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.226.80.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.226.96.0/19 v4 no ROA 4 557202376441344538 2026-09-18
219.226.128.0/21 v4 no ROA 4 557202376441344538 2026-09-18
219.226.136.0/21 v4 no ROA 4 557202376441344538 2026-09-18
219.226.144.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.226.160.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.226.176.0/21 v4 no ROA 4 557202376441344538 2026-09-18
219.226.216.0/21 v4 no ROA 4 557202376441344538 2026-09-18
219.226.224.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.226.240.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.226.250.0/24 v4 no ROA 4 557202376441344538 2026-09-18
219.227.0.0/16 v4 no ROA 48 244824538 2026-09-18
219.227.0.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.2.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.4.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.6.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.7.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.8.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.12.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.14.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.15.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.16.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.17.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.18.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.19.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.20.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.21.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.22.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.23.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.24.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.26.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.28.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.30.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.32.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.34.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.36.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.38.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.40.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.42.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.44.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.46.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.48.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.50.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.50.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.52.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.54.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.56.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.58.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.64.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.66.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.68.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.69.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.70.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.71.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.72.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.76.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.78.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.80.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
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