206208 looking glass

AS4538 China Education and Research Network Center 🇨🇳 CN

Announcing 5,166 prefixes, seen at the RIS collectors.

IPv4 prefixes
5,156
42,948,352 (167,767 × /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 (28.2%) 2 invalid (0.0%) 3,705 no ROA (71.7%)

Announced prefixes

5,166 in total

Prefix RPKI Peers Sample path First seen
210.31.100.0/22 v4 no ROA 4 557202376441344538 2026-09-18
210.31.100.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
210.31.104.0/21 v4 no ROA 4 557202376441344538 2026-09-18
210.31.104.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
210.31.112.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
210.31.128.0/17 v4 no ROA 4 557202376441344538 2026-09-18
210.31.128.0/20 v4 no ROA 4 557202376441344538 2026-09-18
210.31.128.0/21 v4 no ROA 4 557202376441344538 2026-09-18
210.31.136.0/21 v4 no ROA 4 557202376441344538 2026-09-18
210.31.144.0/21 v4 no ROA 4 557202376441344538 2026-09-18
210.31.176.0/20 v4 no ROA 45 237644538 2026-09-18
210.31.176.0/24 v4 RPKI valid 45 237644538 2026-09-18
210.31.178.0/23 v4 no ROA 4 557202376441344538 2026-09-18
210.31.192.0/18 v4 no ROA 4 557202376441344538 2026-09-18
210.31.192.0/21 v4 no ROA 4 557202376441344538 2026-09-18
210.31.200.0/21 v4 no ROA 4 557202376441344538 2026-09-18
210.31.208.0/21 v4 no ROA 4 557202376441344538 2026-09-18
210.31.224.0/20 v4 no ROA 4 557202376441344538 2026-09-18
210.31.224.0/24 v4 no ROA 4 557202376441344538 2026-09-18
210.31.248.0/21 v4 no ROA 4 557202376441344538 2026-09-18
210.32.0.0/12 v4 no ROA 49 244824538 2026-09-18
210.32.0.0/16 v4 no ROA 13 244824538 2026-09-18
210.32.0.0/20 v4 no ROA 13 244824538 2026-09-18
210.32.2.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.32.5.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.32.9.0/24 v4 RPKI valid 43 380011405704538 2026-09-18
210.32.10.0/24 v4 RPKI valid 43 3454964534538 2026-09-18
210.32.16.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.32.20.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.32.24.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.32.28.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.32.32.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.32.37.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.32.40.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.32.48.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.32.64.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.32.68.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.32.72.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.32.76.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.32.80.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.32.96.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.32.104.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.32.108.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.32.128.0/18 v4 no ROA 41 244824538 2026-09-18
210.32.128.0/19 v4 no ROA 13 244824538 2026-09-18
210.32.137.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.32.160.0/19 v4 no ROA 13 244824538 2026-09-18
210.32.175.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.32.200.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.32.206.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.32.207.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.32.208.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.0.0/16 v4 no ROA 13 244824538 2026-09-18
210.33.4.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.8.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.16.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.22.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.33.25.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.33.26.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.33.27.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.33.28.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.29.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.33.32.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.40.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.40.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.44.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.46.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.48.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.52.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.60.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.64.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.72.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.80.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.86.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.33.88.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.98.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.102.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.116.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.120.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.124.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.132.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.148.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.33.152.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.156.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.168.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.176.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.33.248.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.34.0.0/16 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.34.0.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.34.11.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.34.16.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.34.24.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.34.32.0/19 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.34.32.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.34.47.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.34.48.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.34.64.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.34.80.0/20 v4 no ROA 45 237644538 2026-09-18
210.34.80.0/24 v4 RPKI valid 43 3454964534538 2026-09-18
210.34.96.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.34.98.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.34.112.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.34.120.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.34.128.0/19 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.34.160.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.34.176.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.34.192.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.34.208.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.34.212.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.34.216.0/22 v4 no ROA 43 3454964534538 2026-09-18
210.34.232.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.34.240.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.34.240.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.35.0.0/16 v4 no ROA 13 244824538 2026-09-18
210.35.0.0/22 v4 no ROA 4 557202376441344538 2026-09-18
210.35.4.0/22 v4 no ROA 4 557202376441344538 2026-09-18
210.35.6.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
210.35.8.0/21 v4 no ROA 4 557202376441344538 2026-09-18
210.35.16.0/21 v4 no ROA 4 557202376441344538 2026-09-18
210.35.24.0/21 v4 no ROA 4 557202376441344538 2026-09-18
210.35.32.0/20 v4 no ROA 4 557202376441344538 2026-09-18
210.35.48.0/20 v4 no ROA 4 557202376441344538 2026-09-18
210.35.64.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.35.68.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.35.72.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.35.74.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.35.88.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.35.96.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.35.100.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.35.100.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.35.104.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.35.112.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.35.128.0/20 v4 no ROA 4 557202376441344538 2026-09-18
210.35.144.0/21 v4 no ROA 4 557202376441344538 2026-09-18
210.35.152.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
210.35.153.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
210.35.154.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
210.35.155.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
210.35.160.0/21 v4 no ROA 4 557202376441344538 2026-09-18
210.35.168.0/22 v4 no ROA 4 557202376441344538 2026-09-18
210.35.171.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
210.35.172.0/22 v4 no ROA 4 557202376441344538 2026-09-18
210.35.176.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
210.35.184.0/21 v4 no ROA 4 557202376441344538 2026-09-18
210.35.192.0/20 v4 no ROA 4 557202376441344538 2026-09-18
210.35.224.0/20 v4 no ROA 4 557202376441344538 2026-09-18
210.35.240.0/20 v4 no ROA 4 557202376441344538 2026-09-18
210.35.240.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
210.36.0.0/16 v4 no ROA 13 244824538 2026-09-18
210.36.0.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.36.4.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.8.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.36.16.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.17.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.18.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.19.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.20.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.21.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.22.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.23.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.24.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.25.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.26.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.27.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.28.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.29.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
210.36.30.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.31.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.32.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.36.48.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.36.50.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.64.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.36.64.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.80.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.96.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.36.99.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.100.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.101.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.102.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.120.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.36.127.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.128.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.36.128.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.136.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.36.136.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.144.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.36.144.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.200.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.36.214.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.36.224.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.36.240.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.36.254.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.37.0.0/16 v4 no ROA 13 244824538 2026-09-18
210.37.0.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.37.0.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.37.10.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.37.11.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.37.14.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
210.37.24.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
210.37.28.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
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