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
121.192.9.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
121.192.11.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
121.192.12.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
121.192.13.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
121.192.16.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.192.24.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.192.30.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.192.32.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.192.36.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.192.40.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.192.44.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.192.48.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.192.50.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.192.52.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.192.56.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.192.60.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.192.64.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.192.128.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
121.192.129.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
121.192.130.0/23 v4 no ROA 4 557202376441344538 2026-09-18
121.192.132.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
121.192.134.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
121.192.137.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
121.192.138.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
121.192.160.0/19 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.192.192.0/18 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.193.0.0/16 v4 no ROA 48 244824538 2026-09-18
121.193.64.0/20 v4 no ROA 4 557202376441344538 2026-09-18
121.193.80.0/20 v4 no ROA 4 557202376441344538 2026-09-18
121.193.96.0/22 v4 no ROA 4 557202376441344538 2026-09-18
121.193.128.0/20 v4 no ROA 4 557202376441344538 2026-09-18
121.193.144.0/21 v4 no ROA 4 557202376441344538 2026-09-18
121.193.160.0/19 v4 no ROA 4 557202376441344538 2026-09-18
121.193.192.0/20 v4 no ROA 4 557202376441344538 2026-09-18
121.193.208.0/21 v4 no ROA 4 557202376441344538 2026-09-18
121.193.216.0/23 v4 no ROA 4 557202376441344538 2026-09-18
121.193.221.0/24 v4 no ROA 4 557202376441344538 2026-09-18
121.193.222.0/24 v4 no ROA 4 557202376441344538 2026-09-18
121.193.224.0/20 v4 no ROA 4 557202376441344538 2026-09-18
121.193.240.0/21 v4 no ROA 4 557202376441344538 2026-09-18
121.193.248.0/21 v4 no ROA 4 557202376441344538 2026-09-18
121.194.0.0/15 v4 no ROA 49 244824538 2026-09-18
121.194.0.0/20 v4 no ROA 4 557202376441344538 2026-09-18
121.194.4.0/24 v4 RPKI valid 4 382292449024489239114538 2026-09-18
121.194.10.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
121.194.16.0/20 v4 no ROA 4 557202376441344538 2026-09-18
121.194.32.0/20 v4 no ROA 4 557202376441344538 2026-09-18
121.194.48.0/20 v4 no ROA 4 557202376441344538 2026-09-18
121.194.64.0/20 v4 no ROA 4 557202376441344538 2026-09-18
121.194.80.0/21 v4 no ROA 4 557202376441344538 2026-09-18
121.194.88.0/22 v4 no ROA 4 557202376441344538 2026-09-18
121.194.92.0/22 v4 no ROA 4 557202376441344538 2026-09-18
121.194.96.0/20 v4 no ROA 4 557202376441344538 2026-09-18
121.194.112.0/20 v4 no ROA 4 557202376441344538 2026-09-18
121.194.144.0/20 v4 no ROA 4 557202376441344538 2026-09-18
121.194.167.0/24 v4 RPKI valid 5 557202376441344538 2026-09-18
121.194.172.0/22 v4 no ROA 5 557202376441344538 2026-09-18
121.194.172.0/23 v4 no ROA 5 557202376441344538 2026-09-18
121.194.174.0/23 v4 no ROA 5 557202376441344538 2026-09-18
121.194.176.0/20 v4 no ROA 41 3454912994538 2026-09-18
121.194.192.0/19 v4 no ROA 4 557202376441344538 2026-09-18
121.194.224.0/19 v4 no ROA 4 557202376441344538 2026-09-18
121.195.12.0/23 v4 no ROA 4 557202376441344538 2026-09-18
121.195.14.0/23 v4 no ROA 4 557202376441344538 2026-09-18
121.195.16.0/20 v4 no ROA 4 557202376441344538 2026-09-18
121.195.32.0/19 v4 no ROA 4 557202376441344538 2026-09-18
121.195.96.0/20 v4 no ROA 4 557202376441344538 2026-09-18
121.195.112.0/23 v4 no ROA 4 557202376441344538 2026-09-18
121.195.114.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
121.195.128.0/19 v4 no ROA 4 557202376441344538 2026-09-18
121.195.160.0/20 v4 no ROA 4 557202376441344538 2026-09-18
121.195.180.0/22 v4 no ROA 4 557202376441344538 2026-09-18
121.195.186.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
121.195.188.0/23 v4 no ROA 4 557202376441344538 2026-09-18
121.195.192.0/19 v4 no ROA 4 557202376441344538 2026-09-18
121.195.224.0/20 v4 no ROA 4 557202376441344538 2026-09-18
121.195.240.0/20 v4 no ROA 4 557202376441344538 2026-09-18
121.248.0.0/14 v4 no ROA 49 244824538 2026-09-18
121.248.0.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.248.16.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.248.32.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.248.48.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.248.60.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
121.248.64.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.248.72.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.248.80.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.248.96.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.248.112.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.248.120.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.248.128.0/19 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.248.160.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.248.168.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.248.176.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.248.184.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.248.192.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.248.208.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.248.224.0/19 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.249.0.0/20 v4 no ROA 13 244824538 2026-09-18
121.249.16.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.249.32.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.249.48.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.249.128.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.249.144.0/20 v4 no ROA 4 557202376441344538 2026-09-18
121.249.172.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.249.192.0/20 v4 no ROA 4 557202376441344538 2026-09-18
121.249.208.0/22 v4 no ROA 4 557202376441344538 2026-09-18
121.249.212.0/23 v4 no ROA 4 557202376441344538 2026-09-18
121.249.214.0/23 v4 no ROA 4 557202376441344538 2026-09-18
121.249.216.0/21 v4 no ROA 4 557202376441344538 2026-09-18
121.249.224.0/20 v4 no ROA 4 557202376441344538 2026-09-18
121.250.0.0/15 v4 no ROA 16 244824538 2026-09-18
121.250.0.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.250.16.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.250.24.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.250.32.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.250.48.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.250.50.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
121.250.51.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
121.250.56.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.250.64.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.250.80.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-28
121.250.80.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-28
121.250.88.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.250.96.0/19 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.250.128.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.250.128.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
121.250.136.0/24 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.250.144.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.250.160.0/19 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.250.187.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
121.250.190.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
121.250.192.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.250.208.0/20 v4 no ROA 13 244824538 2026-09-18
121.250.224.0/21 v4 no ROA 13 244824538 2026-09-18
121.250.232.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.250.240.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.251.0.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.251.16.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.251.24.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.251.26.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.251.28.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.251.32.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.251.36.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.251.48.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.251.50.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.251.52.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
121.251.56.0/23 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.251.64.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.251.88.0/21 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.251.128.0/24 v4 RPKI valid 1 443933571010099992948374538 2026-09-18
121.251.132.0/22 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.251.136.0/21 v4 no ROA 4 557202376441344538 2026-09-18
121.251.144.0/20 v4 no ROA 1 443933571010099992948374538 2026-10-13
121.251.160.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.251.176.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.251.192.0/20 v4 no ROA 1 443933571010099992948374538 2026-09-18
121.251.208.0/21 v4 no ROA 4 557202376441344538 2026-09-18
121.251.216.0/21 v4 no ROA 4 557202376441344538 2026-09-18
121.251.224.0/20 v4 no ROA 4 557202376441344538 2026-09-18
121.251.240.0/20 v4 no ROA 4 557202376441344538 2026-09-18
122.204.0.0/14 v4 no ROA 49 244824538 2026-09-18
122.204.0.0/19 v4 no ROA 44 237644538 2026-09-18
122.204.40.0/23 v4 no ROA 44 237644538 2026-09-18
122.204.42.0/23 v4 no ROA 44 237644538 2026-09-18
122.204.44.0/22 v4 no ROA 44 237644538 2026-09-18
122.204.48.0/20 v4 no ROA 44 237644538 2026-09-18
122.204.64.0/19 v4 no ROA 44 237644538 2026-09-18
122.204.96.0/21 v4 no ROA 44 237644538 2026-09-18
122.204.112.0/20 v4 no ROA 44 237644538 2026-09-18
122.204.128.0/20 v4 no ROA 44 237644538 2026-09-18
122.204.144.0/20 v4 no ROA 44 237644538 2026-09-18
122.204.160.0/20 v4 no ROA 44 237644538 2026-09-18
122.204.176.0/20 v4 no ROA 44 237644538 2026-09-18
122.204.192.0/19 v4 no ROA 44 237644538 2026-09-18
122.204.224.0/21 v4 no ROA 44 237644538 2026-09-18
122.204.232.0/23 v4 no ROA 44 237644538 2026-09-18
122.204.240.0/20 v4 no ROA 44 237644538 2026-09-18
122.205.0.0/22 v4 no ROA 4 557202376441344538 2026-09-18
122.205.4.0/22 v4 no ROA 44 237644538 2026-09-18
122.205.8.0/21 v4 no ROA 44 237644538 2026-09-18
122.205.16.0/20 v4 no ROA 44 237644538 2026-09-18
122.205.32.0/19 v4 no ROA 44 237644538 2026-09-18
122.205.64.0/19 v4 no ROA 44 244824538 2026-09-18
122.205.96.0/21 v4 no ROA 44 244824538 2026-09-18
122.205.104.0/23 v4 no ROA 44 237644538 2026-09-18
122.205.112.0/20 v4 no ROA 44 237644538 2026-09-18
122.205.128.0/20 v4 no ROA 44 237644538 2026-09-18
122.206.0.0/21 v4 no ROA 4 557202376441344538 2026-09-18
122.206.8.0/21 v4 no ROA 4 557202376441344538 2026-09-18
122.206.16.0/21 v4 no ROA 4 557202376441344538 2026-09-18
122.206.24.0/21 v4 no ROA 4 557202376441344538 2026-09-18
122.206.32.0/19 v4 no ROA 4 557202376441344538 2026-09-18
122.206.64.0/20 v4 no ROA 4 557202376441344538 2026-09-18
122.206.80.0/22 v4 no ROA 4 557202376441344538 2026-09-18
122.206.84.0/23 v4 no ROA 4 557202376441344538 2026-09-18
122.206.86.0/23 v4 no ROA 4 557202376441344538 2026-09-18
122.206.88.0/22 v4 no ROA 4 557202376441344538 2026-09-18
122.206.92.0/24 v4 RPKI valid 4 557202376441344538 2026-09-18
122.206.94.0/23 v4 no ROA 4 557202376441344538 2026-09-18
122.206.96.0/20 v4 no ROA 4 557202376441344538 2026-09-18
Previous1…45678910…26Next