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Announced By
OriginOrigin RegistrantPrefixPrefix Registrant
AS4538 China Education and Research Network Center
IRR Parent Valid
121.48.128.0/20
China Education and Research Network

Less Specific Announcements
OriginOrigin RegistrantPrefixPrefix Registrant
AS4538 China Education and Research Network Center
IRR Valid
121.48.0.0/15
China Education and Research Network