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IPv4 prefix

178.255.104.0/21

IP Prefix (CIDR)
178.255.104.0/21
Subnet Mask
255.255.248.0
Address Count
2,048
IP Range
178.255.104.0 - 178.255.111.255
Subnet calculator
Calculate subnet details
Registered Owners
Registration 1 of 2
Owner
Internet Assigned Numbers Authority
Handle
IANA1-AP
Country
Australia (AU)
Address
see http://www.iana.org.
Registry
APNIC
Registered Prefix
178.0.0.0/8 (178.0.0.0 - 178.255.255.255)
Delegated Prefix
178.107.128.0/17 (178.107.128.0 - 178.107.255.255)
Registration 2 of 2
Handle
MNT-JEx
Country
Spain (ES)
Registry
RIPENCC
Registered Prefixes
178.255.104.0/28 (178.255.104.0 - 178.255.104.15)
178.255.104.16/29 (178.255.104.16 - 178.255.104.23)
178.255.104.24/29 (178.255.104.24 - 178.255.104.31)
178.255.104.32/28 (178.255.104.32 - 178.255.104.47)
178.255.104.48/28 (178.255.104.48 - 178.255.104.63)
178.255.104.64/29 (178.255.104.64 - 178.255.104.71)
178.255.104.80/28 (178.255.104.80 - 178.255.104.95)
178.255.104.96/27 (178.255.104.96 - 178.255.104.127)
178.255.104.128/26 (178.255.104.128 - 178.255.104.191)
178.255.104.192/27 (178.255.104.192 - 178.255.104.223)
178.255.104.224/28 (178.255.104.224 - 178.255.104.239)
178.255.104.240/29 (178.255.104.240 - 178.255.104.247)
178.255.105.0/29 (178.255.105.0 - 178.255.105.7)
178.255.105.8/29 (178.255.105.8 - 178.255.105.15)
178.255.105.24/29 (178.255.105.24 - 178.255.105.31)
178.255.105.36/30 (178.255.105.36 - 178.255.105.39)
178.255.105.40/29 (178.255.105.40 - 178.255.105.47)
178.255.105.48/29 (178.255.105.48 - 178.255.105.55)
178.255.105.56/29 (178.255.105.56 - 178.255.105.63)
178.255.105.64/26 (178.255.105.64 - 178.255.105.127)
178.255.106.0/25 (178.255.106.0 - 178.255.106.127)
178.255.108.0/24 (178.255.108.0 - 178.255.108.255)
178.255.109.0/24 (178.255.109.0 - 178.255.109.255)
178.255.110.0/25 (178.255.110.0 - 178.255.110.127)
178.255.110.128/25 (178.255.110.128 - 178.255.110.255)
Delegated Prefix
178.255.104.0/21 (178.255.104.0 - 178.255.111.255)
BGP Announcements
Announced Prefix Relationship Origin ASN Description Country First Address Last Address
178.255.104.0/23 More specific AS766 Entidad Publica Empresarial Red.es Spain (ES) 178.255.104.0 178.255.105.255
178.255.108.0/23 More specific AS3352 TELEFONICA DE ESPANA S.A.U. Spain (ES) 178.255.108.0 178.255.109.255
178.255.110.0/24 More specific AS3352 TELEFONICA DE ESPANA S.A.U. Spain (ES) 178.255.110.0 178.255.110.255