IRR Gateway Answer

Whois DB (RADB)
route:          18.204.0.0/14
descr:          Amazon EC2 IAD prefix
origin:         AS14618
mnt-by:         MAINT-AS16509
changed:        noc@amazon.com 20171221  #22:38:32Z
source:         RADB
last-modified:  2023-11-13T15:52:42Z
rpki-ov-state:  valid

route:          18.204.0.0/14
descr:          RPKI ROA for 18.204.0.0/14 / AS14618
remarks:        This AS14618 route object represents routing data retrieved
                from the RPKI. This route object is the result of an automated
                RPKI-to-IRR conversion process performed by IRRd.
max-length:     14
origin:         AS14618
source:         RPKI  # Trust Anchor: arin

route:          18.204.0.0/14
descr:          Amazon EC2 IAD prefix
origin:         AS16509
mnt-by:         MAINT-AS16509
changed:        noc@amazon.com 20171221  #22:42:11Z
source:         RADB
last-modified:  2023-11-13T15:52:42Z
rpki-ov-state:  valid

route:          18.204.0.0/14
descr:          RPKI ROA for 18.204.0.0/14 / AS16509
remarks:        This AS16509 route object represents routing data retrieved
                from the RPKI. This route object is the result of an automated
                RPKI-to-IRR conversion process performed by IRRd.
max-length:     14
origin:         AS16509
source:         RPKI  # Trust Anchor: arin