206208 looking glass

AS4538 China Education and Research Network Center 🇨🇳 CN

Announcing 5,161 prefixes, seen at the RIS collectors.

IPv4 prefixes
5,151
42,927,872 (167,687 × /24)
IPv6 prefixes
10
265 × /48
Upstreams
14
transit providers observed
Peers
8
settlement-free adjacencies
Downstreams
14
transit customers observed
Customer cone
85
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 (28.3%) 2 invalid (0.0%) 3,700 no ROA (71.7%)

Announced prefixes

5,161 in total

Prefix RPKI Peers Sample path First seen
219.227.88.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.89.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.90.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.92.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.93.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.94.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.95.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.96.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.97.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.98.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.100.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.104.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.105.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.106.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.108.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.109.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.110.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.111.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.112.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.113.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.114.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.116.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.118.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.119.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.120.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.122.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.124.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.130.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.132.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.134.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.136.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.138.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.140.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.144.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.145.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.146.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.148.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.150.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.151.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.152.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.154.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.156.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.160.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.162.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.164.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.166.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.167.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.168.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.170.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.227.172.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.227.174.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.228.0.0/16 v4 no ROA 47 244824538 2026-09-18
219.228.0.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.228.16.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.228.16.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.228.32.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.228.48.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.228.56.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.228.64.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.228.71.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.228.96.0/19 v4 no ROA 43 244824538 2026-09-18
219.228.96.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.228.112.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.228.128.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.228.144.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.228.160.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.228.160.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.228.176.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.228.176.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.228.192.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.228.224.0/19 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.229.0.0/16 v4 no ROA 47 244824538 2026-09-18
219.229.0.0/19 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.229.0.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.229.32.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.229.48.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.229.64.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.229.80.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.229.96.0/19 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.229.128.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.229.128.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.229.144.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.229.152.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.229.156.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.229.160.0/19 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.229.192.0/19 v4 no ROA 4 557202376441344538 2026-09-18
219.229.224.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.229.240.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.230.16.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.230.32.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.230.48.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.230.51.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.230.64.0/18 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.230.128.0/19 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.230.144.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.230.160.0/19 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.230.176.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.230.192.0/18 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.231.0.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.231.16.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.231.24.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.231.32.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.231.35.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
219.231.48.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.231.56.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.231.128.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.231.144.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.231.160.0/20 v4 no ROA 43 244824538 2026-09-18
219.231.176.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.231.192.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.231.208.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.231.216.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.231.240.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
219.242.0.0/15 v4 no ROA 49 244824538 2026-09-18
219.242.16.0/22 v4 no ROA 4 557202376441344538 2026-09-18
219.242.20.0/22 v4 no ROA 4 557202376441344538 2026-09-18
219.242.24.0/21 v4 no ROA 41 3454912994538 2026-09-18
219.242.24.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.242.26.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.242.28.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.242.32.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.242.48.0/21 v4 no ROA 4 557202376441344538 2026-09-18
219.242.49.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.242.50.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.242.51.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.242.56.0/21 v4 no ROA 4 557202376441344538 2026-09-18
219.242.64.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.242.96.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.242.112.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.242.128.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.242.128.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.242.176.0/21 v4 no ROA 4 557202376441344538 2026-09-18
219.242.192.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.242.208.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.242.224.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.242.240.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.243.0.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.243.16.0/21 v4 no ROA 4 557202376441344538 2026-09-18
219.243.24.0/22 v4 no ROA 4 557202376441344538 2026-09-18
219.243.32.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.243.48.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.243.64.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.243.80.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.243.116.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.243.117.0/24 v4 no ROA 4 557202376441344538 2026-09-18
219.243.128.0/21 v4 no ROA 4 557202376441344538 2026-09-18
219.243.136.0/21 v4 no ROA 4 557202376441344538 2026-09-18
219.243.136.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.243.144.0/21 v4 no ROA 4 557202376441344538 2026-09-18
219.243.176.0/22 v4 no ROA 4 557202376441344538 2026-09-18
219.243.208.0/21 v4 no ROA 4 557202376441344538 2026-09-18
219.243.210.0/23 v4 no ROA 4 557202376441344538 2026-09-18
219.244.0.0/14 v4 no ROA 49 244824538 2026-09-18
219.244.0.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.244.0.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.244.2.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.244.16.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.244.16.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.244.17.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.244.18.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.244.28.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.244.29.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.244.32.0/21 v4 no ROA 4 557202376441344538 2026-09-18
219.244.40.0/21 v4 no ROA 4 557202376441344538 2026-09-23
219.244.48.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.244.64.0/21 v4 no ROA 4 557202376441344538 2026-09-18
219.244.80.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.244.96.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.244.112.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.244.128.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.244.160.0/19 v4 no ROA 43 244824538 2026-09-18
219.244.165.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.244.167.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.244.177.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.244.192.0/19 v4 no ROA 4 557202376441344538 2026-09-18
219.244.208.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.244.212.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.244.221.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.244.222.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.244.223.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.244.224.0/19 v4 no ROA 4 557202376441344538 2026-09-18
219.245.0.0/19 v4 no ROA 4 557202376441344538 2026-09-18
219.245.18.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.245.32.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.245.48.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.245.64.0/18 v4 no ROA 4 557202376441344538 2026-09-18
219.245.128.0/19 v4 no ROA 4 557202376441344538 2026-09-18
219.245.160.0/19 v4 no ROA 4 557202376441344538 2026-09-18
219.245.191.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.245.192.0/19 v4 no ROA 4 557202376441344538 2026-09-18
219.246.0.0/20 v4 no ROA 4 557202376441344538 2026-09-18
219.246.0.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.246.8.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.246.16.0/21 v4 no ROA 4 557202376441344538 2026-09-18
219.246.16.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.246.18.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.246.32.0/19 v4 no ROA 4 557202376441344538 2026-09-18
219.246.38.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
219.246.64.0/19 v4 no ROA 4 557202376441344538 2026-09-18
219.246.96.0/20 v4 no ROA 4 557202376441344538 2026-09-18
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