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IPv4 prefix

81.53.0.0/16

IP Prefix (CIDR)
81.53.0.0/16
Subnet Mask
255.255.0.0
Address Count
65,536
IP Range
81.53.0.0 - 81.53.255.255
Subnet calculator
Calculate subnet details
Registered Owner
Handle
FT-BRX
Country
France (FR)
Registry
RIPENCC
Registered Prefixes
81.53.0.0/24 (81.53.0.0 - 81.53.0.255)
81.53.1.0/24 (81.53.1.0 - 81.53.1.255)
81.53.2.0/24 (81.53.2.0 - 81.53.2.255)
81.53.3.0/24 (81.53.3.0 - 81.53.3.255)
81.53.4.0/24 (81.53.4.0 - 81.53.4.255)
81.53.5.0/24 (81.53.5.0 - 81.53.5.255)
81.53.6.0/24 (81.53.6.0 - 81.53.6.255)
81.53.7.0/24 (81.53.7.0 - 81.53.7.255)
81.53.8.0/24 (81.53.8.0 - 81.53.8.255)
81.53.9.0/24 (81.53.9.0 - 81.53.9.255)
81.53.10.0/24 (81.53.10.0 - 81.53.10.255)
81.53.11.0/24 (81.53.11.0 - 81.53.11.255)
81.53.12.0/24 (81.53.12.0 - 81.53.12.255)
81.53.13.0/24 (81.53.13.0 - 81.53.13.255)
81.53.14.0/24 (81.53.14.0 - 81.53.14.255)
81.53.15.0/24 (81.53.15.0 - 81.53.15.255)
81.53.16.0/24 (81.53.16.0 - 81.53.16.255)
81.53.17.0/24 (81.53.17.0 - 81.53.17.255)
81.53.18.0/24 (81.53.18.0 - 81.53.18.255)
81.53.19.0/24 (81.53.19.0 - 81.53.19.255)
81.53.20.0/24 (81.53.20.0 - 81.53.20.255)
81.53.21.0/24 (81.53.21.0 - 81.53.21.255)
81.53.22.0/24 (81.53.22.0 - 81.53.22.255)
81.53.23.0/24 (81.53.23.0 - 81.53.23.255)
81.53.24.0/24 (81.53.24.0 - 81.53.24.255)
81.53.25.0/24 (81.53.25.0 - 81.53.25.255)
81.53.26.0/24 (81.53.26.0 - 81.53.26.255)
81.53.27.0/24 (81.53.27.0 - 81.53.27.255)
81.53.28.0/24 (81.53.28.0 - 81.53.28.255)
81.53.29.0/24 (81.53.29.0 - 81.53.29.255)
81.53.30.0/24 (81.53.30.0 - 81.53.30.255)
81.53.31.0/24 (81.53.31.0 - 81.53.31.255)
81.53.32.0/24 (81.53.32.0 - 81.53.32.255)
81.53.33.0/24 (81.53.33.0 - 81.53.33.255)
81.53.34.0/24 (81.53.34.0 - 81.53.34.255)
81.53.35.0/24 (81.53.35.0 - 81.53.35.255)
81.53.36.0/24 (81.53.36.0 - 81.53.36.255)
81.53.37.0/24 (81.53.37.0 - 81.53.37.255)
81.53.38.0/24 (81.53.38.0 - 81.53.38.255)
81.53.39.0/24 (81.53.39.0 - 81.53.39.255)
81.53.40.0/24 (81.53.40.0 - 81.53.40.255)
81.53.41.0/24 (81.53.41.0 - 81.53.41.255)
81.53.42.0/24 (81.53.42.0 - 81.53.42.255)
81.53.43.0/24 (81.53.43.0 - 81.53.43.255)
81.53.44.0/24 (81.53.44.0 - 81.53.44.255)
81.53.45.0/24 (81.53.45.0 - 81.53.45.255)
81.53.46.0/24 (81.53.46.0 - 81.53.46.255)
81.53.47.0/24 (81.53.47.0 - 81.53.47.255)
81.53.48.0/24 (81.53.48.0 - 81.53.48.255)
81.53.49.0/24 (81.53.49.0 - 81.53.49.255)
81.53.50.0/24 (81.53.50.0 - 81.53.50.255)
81.53.51.0/24 (81.53.51.0 - 81.53.51.255)
81.53.52.0/24 (81.53.52.0 - 81.53.52.255)
81.53.53.0/24 (81.53.53.0 - 81.53.53.255)
81.53.54.0/24 (81.53.54.0 - 81.53.54.255)
81.53.55.0/24 (81.53.55.0 - 81.53.55.255)
81.53.56.0/24 (81.53.56.0 - 81.53.56.255)
81.53.57.0/24 (81.53.57.0 - 81.53.57.255)
81.53.58.0/24 (81.53.58.0 - 81.53.58.255)
81.53.59.0/24 (81.53.59.0 - 81.53.59.255)
81.53.60.0/24 (81.53.60.0 - 81.53.60.255)
81.53.61.0/24 (81.53.61.0 - 81.53.61.255)
81.53.62.0/24 (81.53.62.0 - 81.53.62.255)
81.53.63.0/24 (81.53.63.0 - 81.53.63.255)
81.53.64.0/24 (81.53.64.0 - 81.53.64.255)
81.53.65.0/24 (81.53.65.0 - 81.53.65.255)
81.53.66.0/24 (81.53.66.0 - 81.53.66.255)
81.53.67.0/24 (81.53.67.0 - 81.53.67.255)
81.53.68.0/24 (81.53.68.0 - 81.53.68.255)
81.53.69.0/24 (81.53.69.0 - 81.53.69.255)
81.53.70.0/24 (81.53.70.0 - 81.53.70.255)
81.53.71.0/24 (81.53.71.0 - 81.53.71.255)
81.53.72.0/24 (81.53.72.0 - 81.53.72.255)
81.53.73.0/24 (81.53.73.0 - 81.53.73.255)
81.53.74.0/24 (81.53.74.0 - 81.53.74.255)
81.53.75.0/24 (81.53.75.0 - 81.53.75.255)
81.53.76.0/24 (81.53.76.0 - 81.53.76.255)
81.53.77.0/24 (81.53.77.0 - 81.53.77.255)
81.53.78.0/24 (81.53.78.0 - 81.53.78.255)
81.53.79.0/24 (81.53.79.0 - 81.53.79.255)
81.53.80.0/24 (81.53.80.0 - 81.53.80.255)
81.53.81.0/24 (81.53.81.0 - 81.53.81.255)
81.53.82.0/24 (81.53.82.0 - 81.53.82.255)
81.53.83.0/24 (81.53.83.0 - 81.53.83.255)
81.53.84.0/24 (81.53.84.0 - 81.53.84.255)
81.53.85.0/24 (81.53.85.0 - 81.53.85.255)
81.53.86.0/24 (81.53.86.0 - 81.53.86.255)
81.53.87.0/24 (81.53.87.0 - 81.53.87.255)
81.53.88.0/24 (81.53.88.0 - 81.53.88.255)
81.53.89.0/24 (81.53.89.0 - 81.53.89.255)
81.53.90.0/24 (81.53.90.0 - 81.53.90.255)
81.53.91.0/24 (81.53.91.0 - 81.53.91.255)
81.53.92.0/24 (81.53.92.0 - 81.53.92.255)
81.53.93.0/24 (81.53.93.0 - 81.53.93.255)
81.53.94.0/24 (81.53.94.0 - 81.53.94.255)
81.53.95.0/24 (81.53.95.0 - 81.53.95.255)
81.53.96.0/24 (81.53.96.0 - 81.53.96.255)
81.53.97.0/24 (81.53.97.0 - 81.53.97.255)
81.53.98.0/24 (81.53.98.0 - 81.53.98.255)
81.53.99.0/24 (81.53.99.0 - 81.53.99.255)
Delegated Prefix
81.48.0.0/13 (81.48.0.0 - 81.55.255.255)

These results are partial. Additional registration records were omitted.

BGP Announcements
Announced Prefix Relationship Origin ASN Description Country First Address Last Address
81.53.0.0/16 Exact AS3215 Orange S.A. France (FR) 81.53.0.0 81.53.255.255