IPv4 prefix

81.3.0.0/18

IP Prefix (CIDR): 81.3.0.0/18
Subnet Mask: 255.255.192.0
Address Count: 16,384
IP Range: 81.3.0.0 - 81.3.63.255
Subnet calculator: Calculate subnet details

Registered Owners

Registration 1 of 3

Handle: AS24679-MNT
Country: Germany (DE)
Registry: RIPENCC
Registered Prefixes: 81.3.0.0/29 (81.3.0.0 - 81.3.0.7)
81.3.0.8/30 (81.3.0.8 - 81.3.0.11)
81.3.0.16/28 (81.3.0.16 - 81.3.0.31)
81.3.0.32/29 (81.3.0.32 - 81.3.0.39)
81.3.0.40/29 (81.3.0.40 - 81.3.0.47)
81.3.0.48/30 (81.3.0.48 - 81.3.0.51)
81.3.0.184/30 (81.3.0.184 - 81.3.0.187)
81.3.0.188/30 (81.3.0.188 - 81.3.0.191)
81.3.0.192/30 (81.3.0.192 - 81.3.0.195)
81.3.0.196/30 (81.3.0.196 - 81.3.0.199)
81.3.0.200/29 (81.3.0.200 - 81.3.0.207)
81.3.0.208/29 (81.3.0.208 - 81.3.0.215)
81.3.0.220/30 (81.3.0.220 - 81.3.0.223)
81.3.0.224/29 (81.3.0.224 - 81.3.0.231)
81.3.0.248/30 (81.3.0.248 - 81.3.0.251)
81.3.0.252/30 (81.3.0.252 - 81.3.0.255)
81.3.1.0/27 (81.3.1.0 - 81.3.1.31)
81.3.1.32/28 (81.3.1.32 - 81.3.1.47)
81.3.1.48/29 (81.3.1.48 - 81.3.1.55)
81.3.1.56/29 (81.3.1.56 - 81.3.1.63)
81.3.1.240/28 (81.3.1.240 - 81.3.1.255)
81.3.3.24/29 (81.3.3.24 - 81.3.3.31)
81.3.3.32/28 (81.3.3.32 - 81.3.3.47)
81.3.3.64/28 (81.3.3.64 - 81.3.3.79)
81.3.3.96/30 (81.3.3.96 - 81.3.3.99)
81.3.3.100/30 (81.3.3.100 - 81.3.3.103)
81.3.3.112/28 (81.3.3.112 - 81.3.3.127)
81.3.4.32/29 (81.3.4.32 - 81.3.4.39)
81.3.4.40/29 (81.3.4.40 - 81.3.4.47)
81.3.5.0/29 (81.3.5.0 - 81.3.5.7)
81.3.5.64/27 (81.3.5.64 - 81.3.5.95)
81.3.5.96/29 (81.3.5.96 - 81.3.5.103)
81.3.5.112/29 (81.3.5.112 - 81.3.5.119)
81.3.5.120/29 (81.3.5.120 - 81.3.5.127)
81.3.6.0/29 (81.3.6.0 - 81.3.6.7)
81.3.6.16/28 (81.3.6.16 - 81.3.6.31)
81.3.6.48/29 (81.3.6.48 - 81.3.6.55)
81.3.6.80/29 (81.3.6.80 - 81.3.6.87)
81.3.6.152/29 (81.3.6.152 - 81.3.6.159)
81.3.6.160/27 (81.3.6.160 - 81.3.6.191)
81.3.6.240/28 (81.3.6.240 - 81.3.6.255)
81.3.8.0/28 (81.3.8.0 - 81.3.8.15)
81.3.8.16/28 (81.3.8.16 - 81.3.8.31)
81.3.8.160/28 (81.3.8.160 - 81.3.8.175)
81.3.9.0/27 (81.3.9.0 - 81.3.9.31)
81.3.9.160/27 (81.3.9.160 - 81.3.9.191)
81.3.10.0/27 (81.3.10.0 - 81.3.10.31)
81.3.10.72/29 (81.3.10.72 - 81.3.10.79)
81.3.10.112/28 (81.3.10.112 - 81.3.10.127)
81.3.10.208/28 (81.3.10.208 - 81.3.10.223)
81.3.11.192/26 (81.3.11.192 - 81.3.11.255)
81.3.13.32/28 (81.3.13.32 - 81.3.13.47)
81.3.13.128/27 (81.3.13.128 - 81.3.13.159)
81.3.13.176/28 (81.3.13.176 - 81.3.13.191)
81.3.14.0/25 (81.3.14.0 - 81.3.14.127)
81.3.14.128/29 (81.3.14.128 - 81.3.14.135)
81.3.14.144/29 (81.3.14.144 - 81.3.14.151)
81.3.14.152/29 (81.3.14.152 - 81.3.14.159)
81.3.14.160/29 (81.3.14.160 - 81.3.14.167)
81.3.15.16/29 (81.3.15.16 - 81.3.15.23)
81.3.15.56/29 (81.3.15.56 - 81.3.15.63)
81.3.15.64/29 (81.3.15.64 - 81.3.15.71)
81.3.15.88/29 (81.3.15.88 - 81.3.15.95)
81.3.16.32/28 (81.3.16.32 - 81.3.16.47)
81.3.16.48/29 (81.3.16.48 - 81.3.16.55)
81.3.16.56/29 (81.3.16.56 - 81.3.16.63)
81.3.16.80/29 (81.3.16.80 - 81.3.16.87)
Delegated Prefix: 81.3.0.0/18 (81.3.0.0 - 81.3.63.255)

Registration 2 of 3

Owner: FNorden e.V. - Freifunk Hannover
Handle: ORG-FEFH1-RIPE
Country: Germany (DE)
Address: Wuelferoder Str. 70 30539 Hannover
Registry: RIPENCC
Registered Prefixes: 81.3.0.12/30 (81.3.0.12 - 81.3.0.15)
81.3.5.136/29 (81.3.5.136 - 81.3.5.143)
Delegated Prefix: 81.3.0.0/18 (81.3.0.0 - 81.3.63.255)

Registration 3 of 3

Handle: SSERV-NET
Country: Germany (DE)
Registry: RIPENCC
Registered Prefixes: 81.3.2.0/24 (81.3.2.0 - 81.3.2.255)
81.3.3.0/28 (81.3.3.0 - 81.3.3.15)
81.3.3.16/28 (81.3.3.16 - 81.3.3.31)
81.3.3.48/28 (81.3.3.48 - 81.3.3.63)
81.3.4.0/28 (81.3.4.0 - 81.3.4.15)
81.3.4.64/28 (81.3.4.64 - 81.3.4.79)
81.3.4.80/28 (81.3.4.80 - 81.3.4.95)
81.3.4.96/27 (81.3.4.96 - 81.3.4.127)
81.3.4.160/27 (81.3.4.160 - 81.3.4.191)
81.3.4.192/29 (81.3.4.192 - 81.3.4.199)
81.3.4.208/28 (81.3.4.208 - 81.3.4.223)
81.3.5.8/29 (81.3.5.8 - 81.3.5.15)
81.3.5.16/28 (81.3.5.16 - 81.3.5.31)
81.3.5.32/27 (81.3.5.32 - 81.3.5.63)
81.3.5.216/30 (81.3.5.216 - 81.3.5.219)
81.3.5.220/31 (81.3.5.220 - 81.3.5.221)
81.3.5.222/32 (81.3.5.222 - 81.3.5.222)
81.3.6.8/29 (81.3.6.8 - 81.3.6.15)
81.3.6.32/28 (81.3.6.32 - 81.3.6.47)
81.3.6.56/29 (81.3.6.56 - 81.3.6.63)
81.3.6.64/28 (81.3.6.64 - 81.3.6.79)
81.3.6.192/28 (81.3.6.192 - 81.3.6.207)
81.3.6.216/32 (81.3.6.216 - 81.3.6.216)
81.3.6.224/28 (81.3.6.224 - 81.3.6.239)
81.3.7.0/24 (81.3.7.0 - 81.3.7.255)
81.3.8.176/28 (81.3.8.176 - 81.3.8.191)
81.3.8.192/26 (81.3.8.192 - 81.3.8.255)
81.3.9.192/26 (81.3.9.192 - 81.3.9.255)
81.3.10.64/29 (81.3.10.64 - 81.3.10.71)
81.3.15.48/29 (81.3.15.48 - 81.3.15.55)
81.3.15.120/30 (81.3.15.120 - 81.3.15.123)
Delegated Prefix: 81.3.0.0/18 (81.3.0.0 - 81.3.63.255)

These results are partial. Additional registration records were omitted.

BGP Announcements

Announced Prefix	Relationship	Origin ASN	Description	Country	First Address	Last Address
81.3.0.0/18	Exact	AS24679	kyberio GmbH	Germany (DE)	81.3.0.0	81.3.63.255