IPv4 prefix

23.0.0.0/8

IP Prefix (CIDR)
23.0.0.0/8
Subnet Mask
255.0.0.0
Address Count
16,777,216
Registration 1 of 19
Owner
American Registry for Internet Numbers
Handle
ARIN
Address
PO Box 232290 Centreville VA 20120 United States
Registry
ARIN
Registered Prefix
23.0.0.0/8 (23.0.0.0 - 23.255.255.255)
Delegated Prefix
23.185.26.0/23 (23.185.26.0 - 23.185.27.255)
Registration 2 of 19
Owner
Akamai Technologies, Inc.
Handle
AKAMAI
Address
145 Broadway Cambridge MA 02142 United States
Registry
ARIN
Registered Prefix
23.0.0.0/12 (23.0.0.0 - 23.15.255.255)
Registration 3 of 19
Owner
Akamai International, BV
Handle
AIB-17
Address
Prins Bernhardplein 200 Amsterdam 1097 JB Netherlands
Registry
ARIN
Registered Prefixes
23.0.32.0/20 (23.0.32.0 - 23.0.47.255)
23.0.212.0/22 (23.0.212.0 - 23.0.215.255)

23.1.4.0/22 (23.1.4.0 - 23.1.7.255)

23.1.64.0/20 (23.1.64.0 - 23.1.79.255)

23.2.52.0/22 (23.2.52.0 - 23.2.55.255)

23.2.208.0/20 (23.2.208.0 - 23.2.223.255)

23.2.224.0/20 (23.2.224.0 - 23.2.239.255)

23.4.248.0/22 (23.4.248.0 - 23.4.251.255)

23.5.96.0/20 (23.5.96.0 - 23.5.111.255)

23.6.124.0/22 (23.6.124.0 - 23.6.127.255)

23.8.0.0/20 (23.8.0.0 - 23.8.15.255)

23.9.128.0/20 (23.9.128.0 - 23.9.143.255)

23.10.64.0/20 (23.10.64.0 - 23.10.79.255)

23.12.0.0/20 (23.12.0.0 - 23.12.15.255)

23.12.128.0/20 (23.12.128.0 - 23.12.143.255)

23.13.48.0/20 (23.13.48.0 - 23.13.63.255)

23.14.92.0/22 (23.14.92.0 - 23.14.95.255)

23.14.112.0/20 (23.14.112.0 - 23.14.127.255)

23.14.136.0/22 (23.14.136.0 - 23.14.139.255)

23.15.132.0/23 (23.15.132.0 - 23.15.133.255)
Delegated Prefix
23.0.0.0/12 (23.0.0.0 - 23.15.255.255)
Registration 4 of 19
Owner
TELUS-HSIA-CRBKBC01
Handle
C07372793
Address
45 12th Ave S Cranbrook BC V1C 2R9 Canada
Registry
ARIN
Registered Prefix
23.16.0.0/22 (23.16.0.0 - 23.16.3.255)
Delegated Prefix
23.16.0.0/15 (23.16.0.0 - 23.17.255.255)
Registration 5 of 19
Owner
T-Mobile USA, Inc.
Handle
TMOBI
Address
12920 SE 38th Street Bellevue WA 98006 United States
Registry
ARIN
Registered Prefix
23.18.0.0/16 (23.18.0.0 - 23.18.255.255)
Registration 6 of 19
Owner
LeaseWeb USA, Inc. Los Angeles
Handle
LULA
Address
1200 W. 7th Street Los Angeles CA 90017 United States
Registry
ARIN
Registered Prefixes
23.19.0.0/19 (23.19.0.0 - 23.19.31.255)
23.19.41.0/24 (23.19.41.0 - 23.19.41.255)

23.19.44.0/22 (23.19.44.0 - 23.19.47.255)

23.19.64.0/20 (23.19.64.0 - 23.19.79.255)

23.19.148.0/22 (23.19.148.0 - 23.19.151.255)

23.19.157.0/24 (23.19.157.0 - 23.19.157.255)

23.19.192.0/22 (23.19.192.0 - 23.19.195.255)

23.19.199.0/24 (23.19.199.0 - 23.19.199.255)

23.19.200.0/22 (23.19.200.0 - 23.19.203.255)

23.19.206.0/24 (23.19.206.0 - 23.19.206.255)

23.19.228.0/22 (23.19.228.0 - 23.19.231.255)

23.19.236.0/22 (23.19.236.0 - 23.19.239.255)
Delegated Prefixes
23.19.32.0/20 (23.19.32.0 - 23.19.47.255)
23.19.64.0/18 (23.19.64.0 - 23.19.127.255)

23.19.128.0/17 (23.19.128.0 - 23.19.255.255)
Registration 7 of 19
Owner
LeaseWeb USA, Inc. Seattle
Handle
LUS-8
Address
12201 Tukwila International Blvd Suite Seattle WA 98168 United States
Registry
ARIN
Registered Prefixes
23.19.32.0/21 (23.19.32.0 - 23.19.39.255)
23.19.80.0/21 (23.19.80.0 - 23.19.87.255)

23.19.104.0/22 (23.19.104.0 - 23.19.107.255)

23.19.124.0/22 (23.19.124.0 - 23.19.127.255)

23.19.128.0/22 (23.19.128.0 - 23.19.131.255)

23.19.168.0/22 (23.19.168.0 - 23.19.171.255)

23.19.216.0/22 (23.19.216.0 - 23.19.219.255)

23.19.248.0/22 (23.19.248.0 - 23.19.251.255)
Delegated Prefixes
23.19.32.0/20 (23.19.32.0 - 23.19.47.255)
23.19.64.0/18 (23.19.64.0 - 23.19.127.255)

23.19.128.0/17 (23.19.128.0 - 23.19.255.255)
Registration 8 of 19
Handle
de-adjust-1-mnt
Country
Germany (DE)
Registry
RIPENCC
Registered Prefixes
23.19.48.0/24 (23.19.48.0 - 23.19.48.255)
23.19.49.0/24 (23.19.49.0 - 23.19.49.255)

23.19.50.0/24 (23.19.50.0 - 23.19.50.255)

23.19.51.0/24 (23.19.51.0 - 23.19.51.255)
Delegated Prefix
23.19.48.0/22 (23.19.48.0 - 23.19.51.255)
Registration 9 of 19
Owner
LeaseWeb Global Services BV
Handle
C07563628
Address
Hessenbergweg 95 Amsterdam 1101 CX Netherlands
Registry
ARIN
Registered Prefix
23.19.52.0/24 (23.19.52.0 - 23.19.52.255)
Delegated Prefix
23.19.52.0/22 (23.19.52.0 - 23.19.55.255)
Registration 10 of 19
Owner
Leaseweb UK Limited
Handle
ORG-LUL9-RIPE
Country
United Kingdom of Great Britain and Northern Ireland (GB)
Address
2 Kingdom Street W2 6BD London UNITED KINGDOM
Registry
RIPENCC
Registered Prefix
23.19.56.0/21 (23.19.56.0 - 23.19.63.255)
Registration 11 of 19
Owner
Leaseweb USA, Inc.
Handle
LU-76
Address
1735 Lundy Ave San Jose CA 95131 United States
Registry
ARIN
Registered Prefixes
23.19.88.0/21 (23.19.88.0 - 23.19.95.255)
23.19.164.0/22 (23.19.164.0 - 23.19.167.255)

23.19.198.0/24 (23.19.198.0 - 23.19.198.255)

23.19.212.0/22 (23.19.212.0 - 23.19.215.255)

23.19.252.0/22 (23.19.252.0 - 23.19.255.255)
Delegated Prefixes
23.19.64.0/18 (23.19.64.0 - 23.19.127.255)
23.19.128.0/17 (23.19.128.0 - 23.19.255.255)
Registration 12 of 19
Owner
Leaseweb USA, Inc.
Handle
LU-187
Address
2115 NW 22nd St Miami FL 33142 United States
Registry
ARIN
Registered Prefixes
23.19.96.0/21 (23.19.96.0 - 23.19.103.255)
23.19.112.0/21 (23.19.112.0 - 23.19.119.255)
Delegated Prefix
23.19.64.0/18 (23.19.64.0 - 23.19.127.255)
Registration 13 of 19
Owner
LeaseWeb USA, Inc. Pheonix
Handle
LUP-4
Address
8521 E Princess DR Scottsdale AZ 85255 United States
Registry
ARIN
Registered Prefixes
23.19.108.0/22 (23.19.108.0 - 23.19.111.255)
23.19.132.0/22 (23.19.132.0 - 23.19.135.255)

23.19.144.0/22 (23.19.144.0 - 23.19.147.255)

23.19.172.0/22 (23.19.172.0 - 23.19.175.255)
Delegated Prefixes
23.19.64.0/18 (23.19.64.0 - 23.19.127.255)
23.19.128.0/17 (23.19.128.0 - 23.19.255.255)
Registration 14 of 19
Owner
LeaseWeb USA, Inc. Chicago
Handle
LUC-11
Address
1850 Springer Drive Chicago IL 60148 United States
Registry
ARIN
Registered Prefixes
23.19.120.0/22 (23.19.120.0 - 23.19.123.255)
23.19.136.0/21 (23.19.136.0 - 23.19.143.255)

23.19.176.0/21 (23.19.176.0 - 23.19.183.255)

23.19.208.0/22 (23.19.208.0 - 23.19.211.255)
Delegated Prefixes
23.19.64.0/18 (23.19.64.0 - 23.19.127.255)
23.19.128.0/17 (23.19.128.0 - 23.19.255.255)
Registration 15 of 19
Owner
Leaseweb USA, Inc.
Handle
LU
Address
9480 Innovation Dr Manassas VA 20109 United States
Registry
ARIN
Registered Prefixes
23.19.128.0/17 (23.19.128.0 - 23.19.255.255)
23.19.160.0/22 (23.19.160.0 - 23.19.163.255)
Registration 16 of 19
Owner
Leaseweb USA, Inc.
Handle
LU-79
Address
1950 North Stemmons Freeway Suites 1039A, 2048, & 2049 Dallas TX 75207 United States
Registry
ARIN
Registered Prefix
23.19.184.0/21 (23.19.184.0 - 23.19.191.255)
Delegated Prefix
23.19.128.0/17 (23.19.128.0 - 23.19.255.255)
Registration 17 of 19
Owner
LeaseWeb Global Services BV
Handle
C07344729
Address
Hessenbergweg 95 Amsterdam 1101 CX Netherlands
Registry
ARIN
Registered Prefix
23.19.196.0/24 (23.19.196.0 - 23.19.196.255)
Delegated Prefix
23.19.128.0/17 (23.19.128.0 - 23.19.255.255)
Registration 18 of 19
Owner
LeaseWeb USA, Inc. New York
Handle
LUNY
Address
3003 Woodbridge Ave. Edison NJ 08837 United States
Registry
ARIN
Registered Prefixes
23.19.224.0/22 (23.19.224.0 - 23.19.227.255)
23.19.244.0/22 (23.19.244.0 - 23.19.247.255)
Delegated Prefix
23.19.128.0/17 (23.19.128.0 - 23.19.255.255)
Registration 19 of 19
Owner
Amazon Data Services Northern Virginia
Handle
ADSN-1
Address
13200 Woodland Park Road Herndon VA 20171 United States
Registry
ARIN
Registered Prefix
23.20.0.0/14 (23.20.0.0 - 23.23.255.255)

These results are partial. Additional registration records were omitted.

Announced Prefix Relationship Origin ASN Description Country First Address Last Address
23.0.0.0/12 More specific AS20940 Akamai International B.V. Netherlands (NL) 23.0.0.0 23.15.255.255
23.0.16.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.0.16.0 23.0.31.255
23.0.32.0/19 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.0.32.0 23.0.63.255
23.0.64.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.0.64.0 23.0.79.255
23.0.88.0/21 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.0.88.0 23.0.95.255
23.0.128.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.0.128.0 23.0.143.255
23.0.144.0/20 More specific AS12252 America Movil Peru S.A.C. Peru (PE) 23.0.144.0 23.0.159.255
23.0.168.0/22 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.0.168.0 23.0.171.255
23.0.172.0/23 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.0.172.0 23.0.173.255
23.0.176.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.0.176.0 23.0.191.255
23.0.192.0/22 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.0.192.0 23.0.195.255
23.0.204.0/22 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.0.204.0 23.0.207.255
23.0.212.0/22 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.0.212.0 23.0.215.255
23.0.220.0/22 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.0.220.0 23.0.223.255
23.0.224.0/21 More specific AS32787 Akamai Technologies Inc. United States of America (US) 23.0.224.0 23.0.231.255
23.0.232.0/21 More specific AS12252 America Movil Peru S.A.C. Peru (PE) 23.0.232.0 23.0.239.255
23.0.244.0/23 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.0.244.0 23.0.245.255
23.0.248.0/22 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.0.248.0 23.0.251.255
23.1.4.0/22 More specific AS2860 NOS COMUNICACOES S.A. Portugal (PT) 23.1.4.0 23.1.7.255
23.1.8.0/22 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.1.8.0 23.1.11.255
23.1.16.0/22 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.1.16.0 23.1.19.255
23.1.24.0/21 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.1.24.0 23.1.31.255
23.1.35.0/24 More specific AS33905 Akamai International B.V. Netherlands (NL) 23.1.35.0 23.1.35.255
23.1.44.0/22 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.1.44.0 23.1.47.255
23.1.48.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.1.48.0 23.1.63.255
23.1.64.0/19 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.1.64.0 23.1.95.255
23.1.99.0/24 More specific AS33905 Akamai International B.V. Netherlands (NL) 23.1.99.0 23.1.99.255
23.1.106.0/24 More specific AS33905 Akamai International B.V. Netherlands (NL) 23.1.106.0 23.1.106.255
23.1.112.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.1.112.0 23.1.127.255
23.1.160.0/19 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.1.160.0 23.1.191.255
23.1.192.0/19 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.1.192.0 23.1.223.255
23.1.232.0/24 More specific AS35994 Akamai Technologies Inc. United States of America (US) 23.1.232.0 23.1.232.255
23.2.10.0/23 More specific AS21342 Akamai International B.V. Netherlands (NL) 23.2.10.0 23.2.11.255
23.2.12.0/24 More specific AS35994 Akamai Technologies Inc. United States of America (US) 23.2.12.0 23.2.12.255
23.2.19.0/24 More specific AS21342 Akamai International B.V. Netherlands (NL) 23.2.19.0 23.2.19.255
23.2.22.0/23 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.2.22.0 23.2.23.255
23.2.52.0/22 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.2.52.0 23.2.55.255
23.2.56.0/22 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.2.56.0 23.2.59.255
23.2.68.0/22 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.2.68.0 23.2.71.255
23.2.76.0/22 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.2.76.0 23.2.79.255
23.2.80.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.2.80.0 23.2.95.255
23.2.128.0/18 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.2.128.0 23.2.191.255
23.2.192.0/19 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.2.192.0 23.2.223.255
23.2.224.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.2.224.0 23.2.239.255
23.3.48.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.3.48.0 23.3.63.255
23.3.70.0/24 More specific AS9498 Bharti Airtel Limited India (IN) 23.3.70.0 23.3.70.255
23.3.72.0/24 More specific AS27789 GREENDOT Trinidad and Tobago (TT) 23.3.72.0 23.3.72.255
23.3.106.0/24 More specific AS4761 PT. INDOSAT Tbk Indonesia (ID) 23.3.106.0 23.3.106.255
23.3.128.0/22 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.3.128.0 23.3.131.255
23.3.138.0/23 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.3.138.0 23.3.139.255
23.3.140.0/22 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.3.140.0 23.3.143.255
23.3.176.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.3.176.0 23.3.191.255
23.3.192.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.3.192.0 23.3.207.255
23.3.240.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.3.240.0 23.3.255.255
23.4.0.0/18 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.4.0.0 23.4.63.255
23.4.64.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.4.64.0 23.4.79.255
23.4.92.0/24 More specific AS24319 Akamai Technologies Inc. United States of America (US) 23.4.92.0 23.4.92.255
23.4.128.0/19 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.4.128.0 23.4.159.255
23.4.176.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.4.176.0 23.4.191.255
23.5.0.0/19 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.5.0.0 23.5.31.255
23.5.96.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.5.96.0 23.5.111.255
23.5.144.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.5.144.0 23.5.159.255
23.5.240.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.5.240.0 23.5.255.255
23.6.0.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.6.0.0 23.6.15.255
23.6.64.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.6.64.0 23.6.79.255
23.6.96.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.6.96.0 23.6.111.255
23.6.176.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.6.176.0 23.6.191.255
23.6.198.0/24 More specific AS24319 Akamai Technologies Inc. United States of America (US) 23.6.198.0 23.6.198.255
23.6.224.0/19 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.6.224.0 23.6.255.255
23.7.0.0/18 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.7.0.0 23.7.63.255
23.7.64.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.7.64.0 23.7.79.255
23.7.96.0/19 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.7.96.0 23.7.127.255
23.7.128.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.7.128.0 23.7.143.255
23.7.176.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.7.176.0 23.7.191.255
23.7.208.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.7.208.0 23.7.223.255
23.7.240.0/22 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.7.240.0 23.7.243.255
23.7.244.0/24 More specific AS33905 Akamai International B.V. Netherlands (NL) 23.7.244.0 23.7.244.255
23.8.0.0/18 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.8.0.0 23.8.63.255
23.8.64.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.8.64.0 23.8.79.255
23.8.96.0/19 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.8.96.0 23.8.127.255
23.8.144.0/20 More specific AS17639 ComClark Network & Technology Corp Philippines (PH) 23.8.144.0 23.8.159.255
23.8.160.0/19 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.8.160.0 23.8.191.255
23.8.192.0/20 More specific AS4775 Globe Telecom (GMCR INC) Philippines (PH) 23.8.192.0 23.8.207.255
23.8.240.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.8.240.0 23.8.255.255
23.9.16.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.9.16.0 23.9.31.255
23.9.48.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.9.48.0 23.9.63.255
23.9.64.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.9.64.0 23.9.79.255
23.9.96.0/19 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.9.96.0 23.9.127.255
23.9.128.0/18 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.9.128.0 23.9.191.255
23.9.192.0/19 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.9.192.0 23.9.223.255
23.9.224.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.9.224.0 23.9.239.255
23.10.0.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.10.0.0 23.10.15.255
23.10.32.0/19 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.10.32.0 23.10.63.255
23.10.64.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.10.64.0 23.10.79.255
23.10.96.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.10.96.0 23.10.111.255
23.10.128.0/18 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.10.128.0 23.10.191.255
23.10.192.0/19 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.10.192.0 23.10.223.255
23.10.224.0/20 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.10.224.0 23.10.239.255
23.11.0.0/19 More specific AS16625 Akamai Technologies Inc. United States of America (US) 23.11.0.0 23.11.31.255
23.11.32.0/21 More specific AS33905 Akamai International B.V. Netherlands (NL) 23.11.32.0 23.11.39.255

Showing the first 100 announced prefixes. Additional more-specific announcements were omitted.