as-block: AS21453 - AS21503 descr: RIPE NCC ASN block remarks: These AS Numbers are assigned to network operators in the RIPE NCC service region. mnt-by: RIPE-NCC-HM-MNT created: 2018-11-22T15:27:28Z last-modified: 2018-11-22T15:27:28Z source: RIPE