206208 looking glass

AS4538 China Education and Research Network Center 🇨🇳 CN

Announcing 5,172 prefixes, seen at the RIS collectors.

IPv4 prefixes
5,162
42,954,752 (167,792 × /24)
IPv6 prefixes
10
265 × /48
Upstreams
14
transit providers observed
Peers
8
settlement-free adjacencies
Downstreams
16
transit customers observed
Customer cone
84
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

1,460 valid (28.2%) 2 invalid (0.0%) 3,710 no ROA (71.7%)

Announced prefixes

5,162 in total

Prefix RPKI Peers Sample path First seen
222.203.73.0/24 v4 RPKI valid 44 237644538 2026-09-18
222.203.74.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.76.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.78.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.80.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.82.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.84.0/22 v4 no ROA 44 237644538 2026-09-18
222.203.88.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.90.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.92.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.94.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.96.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.98.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.100.0/24 v4 RPKI valid 44 237644538 2026-09-18
222.203.102.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.104.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.106.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.108.0/22 v4 no ROA 44 237644538 2026-09-18
222.203.128.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.130.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.132.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.134.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.136.0/21 v4 no ROA 44 237644538 2026-09-18
222.203.144.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.146.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.148.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.150.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.152.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.154.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.156.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.158.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.160.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.162.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.164.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.166.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.168.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.170.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.172.0/23 v4 no ROA 44 237644538 2026-09-18
222.203.176.0/20 v4 no ROA 44 237644538 2026-09-18
222.203.205.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
222.203.208.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.203.212.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.203.218.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.203.218.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
222.203.220.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.203.224.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.203.232.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.203.240.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.204.0.0/16 v4 no ROA 14 244824538 2026-09-18
222.204.0.0/18 v4 no ROA 43 380011405704538 2026-09-18
222.204.40.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
222.204.42.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
222.204.43.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
222.204.44.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
222.204.64.0/19 v4 no ROA 4 557202376441344538 2026-09-18
222.204.96.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
222.204.97.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
222.204.98.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
222.204.99.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
222.204.100.0/22 v4 no ROA 4 557202376441344538 2026-09-18
222.204.104.0/22 v4 no ROA 4 557202376441344538 2026-09-18
222.204.108.0/22 v4 no ROA 4 557202376441344538 2026-09-18
222.204.112.0/22 v4 no ROA 4 557202376441344538 2026-09-18
222.204.116.0/23 v4 no ROA 4 557202376441344538 2026-09-18
222.204.118.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
222.204.120.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
222.204.121.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
222.204.122.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
222.204.123.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
222.204.124.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
222.204.125.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
222.204.126.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
222.204.127.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
222.204.176.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.204.192.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.204.208.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.204.232.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.204.240.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.205.0.0/16 v4 no ROA 14 244824538 2026-09-18
222.205.0.0/17 v4 no ROA 47 244824538 2026-09-18
222.205.120.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.205.160.0/19 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.205.192.0/18 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.206.0.0/19 v4 no ROA 13 244824538 2026-09-18
222.206.32.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
222.206.36.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.206.36.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
222.206.37.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
222.206.38.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
222.206.39.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
222.206.48.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.206.64.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.206.80.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.206.88.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.206.96.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.206.112.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.206.160.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.206.168.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.206.176.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.206.192.0/21 v4 no ROA 4 557202376441344538 2026-09-18
222.206.200.0/22 v4 no ROA 4 557202376441344538 2026-09-18
222.206.204.0/23 v4 no ROA 4 557202376441344538 2026-09-18
222.206.206.0/23 v4 no ROA 4 557202376441344538 2026-09-18
222.206.210.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
222.206.212.0/22 v4 no ROA 4 557202376441344538 2026-09-18
222.206.220.0/22 v4 no ROA 4 557202376441344538 2026-09-18
222.206.224.0/21 v4 no ROA 4 557202376441344538 2026-09-18
222.207.0.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.207.4.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.207.8.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.207.10.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.207.12.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.207.14.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.207.14.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
222.207.16.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.207.32.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.207.48.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.207.64.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.207.68.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.207.72.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.207.80.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.207.144.0/21 v4 no ROA 42 3454929144538 2026-09-18
222.207.160.0/21 v4 no ROA 1 443933571010099992948374538 2026-10-01
222.207.176.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.207.192.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.207.192.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.207.200.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.207.200.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
222.207.201.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
222.207.202.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
222.207.203.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
222.207.204.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.207.208.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
222.207.224.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-26
222.207.240.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-24
223.2.0.0/15 v4 no ROA 49 244824538 2026-09-18
223.2.0.0/18 v4 no ROA 1 443933571010099992948374538 2026-09-18
223.2.64.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
223.2.80.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
223.2.88.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
223.2.96.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
223.2.112.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
223.2.120.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
223.2.128.0/19 v4 no ROA 1 443933571010099992948374538 2026-09-18
223.2.160.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
223.2.176.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
223.2.178.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
223.2.192.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
223.2.208.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
223.2.224.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
223.2.240.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
223.3.0.0/16 v4 no ROA 14 244824538 2026-09-18
223.128.0.0/15 v4 no ROA 49 244824538 2026-09-18
223.128.0.0/17 v4 no ROA 4 557202376441344538 2026-09-18
223.128.128.0/20 v4 no ROA 4 557202376441344538 2026-09-18
223.128.144.0/20 v4 no ROA 4 557202376441344538 2026-09-18
223.128.160.0/20 v4 no ROA 4 557202376441344538 2026-09-18
223.129.0.0/17 v4 no ROA 4 557202376441344538 2026-09-18
223.129.0.0/22 v4 no ROA 4 557202376441344538 2026-09-18
223.129.4.0/22 v4 no ROA 4 557202376441344538 2026-09-18
223.129.240.0/20 v4 no ROA 4 557202376441344538 2026-09-18
223.129.252.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
Previous1…23242526