173.0.0.0/8

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74 blocks covering 12,516,608 addresses, 17 gaps covering 88,146,688 addresses. Sorted by start address; grey rows are gaps.

StartPrefix or rangeSizeStatusHeldCountryRegistryRDAPNameTypeOrganizationProbesFlags
173.2.0.0173.2.0.0/15131,072allocatedyesUSarinownOOL-CPE-LYBRNY-173-2-0-0-22ASSIGNMENTOptimum Online (Cablevision Systems)5,832
173.4.0.0173.4.0.0/14262,144allocatedyesUSarinownXXDIRECT ALLOCATIONT-Mobile USA, Inc.5,832
173.8.0.0173.8.0.0/13524,288allocatedyesUSarinownBAWA-CBC-18ALLOCATIONComcast Cable Communications, LLC5,832
173.16.0.0173.16.0.0/121,048,576allocatedyesUSarinownMEDIACOM-RESIDENTIAL-CUSTDIRECT ALLOCATIONMediacom Communications Corp14,580
gap: 173.32.0.0 - 173.35.255.255 (262,144 addresses)
173.36.0.0173.36.0.0/14262,144allocatedyesUSarinownCISCO-GEN-8DIRECT ALLOCATIONCISCO SYSTEMS, INC.2,916
173.40.0.0173.40.0.0/14262,144allocatedyesUSarinownRRHLDIRECT ALLOCATIONCharter Communications Inc5,832
gap: 173.44.0.0 - 173.46.255.255 (196,608 addresses)
173.47.0.0173.47.0.0/1665,536allocatedyesUSarinownCBL1-VOIPDIRECT ALLOCATIONCABLE ONE2,916
173.48.0.0173.48.0.0/121,048,576allocatedyesUSarinownVIS-BLOCKDIRECT ALLOCATIONVerizon Business8,748
173.64.0.0173.64.0.0/121,048,576allocatedyesUSarinownVIS-BLOCKDIRECT ALLOCATIONVerizon Business11,664
gap: 173.80.0.0 - 173.82.255.255 (196,608 addresses)
173.83.0.0173.83.0.0/1665,536allocatedyesUSarinownAMAZON-FCALLOCATIONAmazon.com Services, LLC2,916
gap: 173.84.0.0 - 173.87.255.255 (262,144 addresses)
173.88.0.0173.88.0.0/13524,288allocatedyesUSarinownRRMADIRECT ALLOCATIONCharter Communications Inc2,916
173.96.0.0173.96.0.0/112,097,152allocatedyesUSarinownAMAZO-4DIRECT ALLOCATIONAmazon.com, Inc.20,412
173.128.0.0173.128.0.0/112,097,152allocatedyesUSarinownAMAZO-4DIRECT ALLOCATIONAmazon.com, Inc.17,496
173.160.0.0173.160.0.0/13524,288allocatedyesUSarinownPARKER--WAICHMAN-AND-ALONSOASSIGNMENTParker- Waichman and Alonso5,832
173.168.0.0173.168.0.0/13524,288allocatedyesUSarinownRRSWDIRECT ALLOCATIONCharter Communications Inc2,916
173.176.0.0173.176.0.0/14262,144allocatedyesCAarinownVL-DHCPVIDEOTRON-MP-ADB00000ASSIGNMENTVideotron Ltee2,916
173.180.0.0173.180.0.0/14262,144allocatedyesCAarinownTELUS-FIBRE-PGRGBC1ASSIGNMENTTELUS-FIBRE-PGRGBC012,916
173.184.0.0173.184.0.0/13524,288allocatedyesUSarinown173-184-0-0ASSIGNMENTWINDSTREAM COMMUNICATIONS LLC2,916
173.192.0.0173.192.0.0/15131,072allocatedyesUSarinownSOFTLAYER-4-8DIRECT ALLOCATIONIBM Cloud2,916
gap: 173.194.0.0 - 173.195.255.255 (131,072 addresses)
173.196.0.0173.196.0.0/15131,072allocatedyesUSarinownNET-173-196-0-0-1ASSIGNMENTLYNDEN J & ASSOCIATES2,916
gap: 173.198.0.0 - 173.198.255.255 (65,536 addresses)
173.199.0.0173.199.0.0/1816,384allocatedyesUSarinownGOTO-BLOCK4DIRECT ALLOCATIONGoto Group, Inc.972
173.199.64.0173.199.64.0/1816,384allocatedyesUSarinownNET-173-199-64-0-24ASSIGNMENTGameServers.com702
173.199.128.0173.199.128.0/1816,384allocatedyesUSarinownLIQUIDWEBDIRECT ALLOCATIONLiquid Web, L.L.C648
173.199.192.0173.199.192.0/1816,384allocatedyesUSarinownFISION-BLK-BOCAWOODSALLOCATIONHotwire Fision594
gap: 173.200.0.0 - 173.210.255.255 (720,896 addresses)
173.211.0.0173.211.0.0/1732,768allocatedyesUSarinownCODE200ASSIGNMENTCode2001,674
173.211.128.0173.211.128.0/198,192allocatedyesPRarinownCENT-IPDIRECT ALLOCATIONLiberty Mobile Puerto Rico Inc.324
173.211.160.0173.211.160.0/204,096allocatedyesPRarinparentCENT-IPDIRECT ALLOCATIONLiberty Mobile Puerto Rico Inc.162P
173.211.176.0173.211.176.0/212,048allocatedyesPRarinownWORLD-267DIRECT ALLOCATIONWorldNet Telecommunications, LLC108
173.211.184.0173.211.184.0/212,048allocatedyesPRarinownCENT-IPDIRECT ALLOCATIONLiberty Mobile Puerto Rico Inc.54
173.211.192.0173.211.192.0/1816,384allocatedyesUSarinownNTEL-NETBLOCK4DIRECT ALLOCATIONWindstream Communications LLC594
gap: 173.212.0.0 - 173.221.255.255 (655,360 addresses)
173.222.0.0173.222.0.0/15131,072allocatedyesUSarinownAKAMAIDIRECT ALLOCATIONAkamai Technologies, Inc.2,916
gap: 173.224.0.0 - 173.225.255.255 (131,072 addresses)
173.226.0.0173.226.0.0/15131,072allocatedyesUSarinownTWTC-NETBLK-18DIRECT ALLOCATIONLevel 3 Parent, LLC2,916
gap: 173.228.0.0 - 173.228.255.255 (65,536 addresses)
173.229.0.0173.229.0.0/198,192allocatedyesUSarinown5DL-CIDR-2DIRECT ALLOCATION5Nines Data, LLC594
173.229.32.0173.229.32.0/198,192allocatedyesUSarinownWSKT-299ASSIGNMENTAuburn School District378
173.229.64.0173.229.64.0/1816,384allocatedyesUSarinownNETBLK-WIFI-BLK3DIRECT ALLOCATIONOptimum WiFi702
173.229.128.0173.229.128.0/1732,768allocatedyesUSarinownUPRR-IPV4-05DIRECT ALLOCATIONUnion Pacific Railroad Company1,242
gap: 173.230.0.0 - 173.232.255.255 (196,608 addresses)
173.233.0.0173.233.0.0/198,192allocatedyesUSarinownCONSO-PA-NB9DIRECT ALLOCATIONFidium594
173.233.32.0173.233.32.0/204,096allocatedyesUSarinownPREMI-63-DORDT-01ASSIGNMENTDordt University216
173.233.48.0173.233.48.0/204,096allocatedyesUSarinownICOREDIRECT ALLOCATIONiCore Networks, Inc.162
173.233.64.0173.233.64.0/198,192allocatedyesUSarinownTURNKEY-INTERNETDIRECT ALLOCATIONTurnkey Internet Inc.324
173.233.96.0173.233.96.0/204,096allocatedyesUSarinownOPTICALTELDIRECT ALLOCATIONOPTICALTEL270
173.233.112.0173.233.112.0/204,096allocatedyesUSarinownFTC-INETDIRECT ALLOCATIONFarmers Telephone Cooperative, Inc.108
173.233.128.0173.233.128.0/198,192allocatedyesUSarinownSERVERS-COM-LON1ASSIGNMENTServers.com, Inc.324
173.233.160.0173.233.160.0/204,096allocatedyesUSarinownMTCCOMM-NETDIRECT ALLOCATIONMTC Communications, Inc.162
173.233.176.0173.233.176.0/204,096allocatedyesUSarinownCLASSICSOUTHCOMMDIRECT ALLOCATIONClassic South Communications, L.L.C.162
173.233.192.0173.233.192.0/1816,384allocatedyesUSarinownTNSTATEDIRECT ALLOCATIONTennessee State University594
gap: 173.234.0.0 - 173.238.255.255 (327,680 addresses)
173.239.0.0173.239.0.0/198,192allocatedyesUSarinownWEBAIRINTERNET8DIRECT ALLOCATIONWebair Internet Development Company Inc.594
173.239.32.0173.239.32.0/204,096allocatedyesUSarinparentWEBAIRINTERNET8DIRECT ALLOCATIONWebair Internet Development Company Inc.216P
173.239.48.0173.239.48.0/212,048allocatedyesUSarinparentWEBAIRINTERNET8DIRECT ALLOCATIONWebair Internet Development Company Inc.54P
173.239.56.0173.239.56.0/221,024allocatedyesUSarinparentWEBAIRINTERNET8DIRECT ALLOCATIONWebair Internet Development Company Inc.54P
gap: 173.239.60.0 - 173.239.60.255 (256 addresses)
173.239.61.0173.239.61.0/24256allocatedyesUSarinownWEBAIRINTERNET8DIRECT ALLOCATIONWebair Internet Development Company Inc.54
gap: 173.239.62.0 - 173.239.63.255 (512 addresses)
173.239.64.0173.239.64.0/204,096allocatedyesUSarinownUNWIRED-6DIRECT ALLOCATIONUnwired216
173.239.80.0173.239.80.0/204,096allocatedyesUSarinownCAS-EST-3DIRECT ALLOCATIONCascade Access, LLC108
173.239.96.0173.239.96.0/198,192allocatedyesUSarinownHOSTMYSITEDIRECT ALLOCATIONHDC/HW Enterprise, LLC378
173.239.128.0173.239.128.0/1816,384allocatedyesCAarinownAKN-JASON-BROWNASSIGNMENTAkn JASON BROWN AJAX648
173.239.192.0173.239.192.0/1816,384allocatedyesUSarinownLOGICWEBDIRECT ALLOCATIONLogicWeb Inc.594
gap: 173.240.0.0 - 173.240.255.255 (65,536 addresses)
173.241.0.0173.241.0.0/204,096allocatedyesUSarinownDMLLC-NETDIRECT ALLOCATIONDENIRO MARKETING, LLC.324
173.241.16.0173.241.16.0/204,096allocatedyesUSarinownPAXIO-V4-20-02DIRECT ALLOCATIONPaxio Inc.270
173.241.32.0173.241.32.0/204,096allocatedyesCAarinownNET-APPDIRECT-01DIRECT ALLOCATIONAppDirect216
173.241.48.0173.241.48.0/204,096allocatedyesUSarinownMETALINK-TECHNOLOGIES-INCDIRECT ALLOCATIONMetalink Technologies, Inc.162
173.241.64.0173.241.64.0/204,096allocatedyesUSarinownNEXBAND-FULTONDIRECT ALLOCATIONneXband Communications. Inc.216
173.241.80.0173.241.80.0/204,096allocatedyesUSarinownBIDSDIRECT ALLOCATIONBIDS Trading L.P.108
173.241.96.0173.241.96.0/204,096allocatedyesCAarinownBMTS-NET3DIRECT ALLOCATIONBruce Telecom270
173.241.112.0173.241.112.0/204,096allocatedyesUSarinownWESTPHALIA-1BLKDIRECT ALLOCATIONWBI108
173.241.128.0173.241.128.0/204,096allocatedyesUSarinownTINET-LINKNETASSIGNMENTTinet162
173.241.144.0173.241.144.0/204,096allocatedyesUSarinownOVERSTOCKDIRECT ALLOCATIONOverstock.com162
173.241.160.0173.241.160.0/204,096allocatedyesUSarinownSANDYNETDIRECT ALLOCATIONCity of Sandy162
173.241.176.0173.241.176.0/204,096allocatedyesUSarinownTMI-ASSIGNMENT-3ASSIGNMENTTMI Systems Design Corporation162
173.241.192.0173.241.192.0/204,096allocatedyesUSarinownESN-NET4DIRECT ALLOCATIONWideOpenWest Finance LLC162
173.241.208.0173.241.208.0/204,096allocatedyesUSarinownCRT-NET-2DIRECT ALLOCATIONZayo Bandwidth108
173.241.224.0173.241.224.0/204,096allocatedyesUSarinownONE-VIEW-COMMUNCATIONSASSIGNMENTOne View Communications 216
173.241.240.0173.241.240.0/204,096allocatedyesUSarinownOPENX-IP4-01DIRECT ALLOCATIONOPENX TECHNOLOGIES, INC.108
gap: 173.242.0.0 - 173.250.255.255 (589,824 addresses)
173.251.0.0173.251.0.0/1732,768allocatedyesUSarinownCVNET-ADFB00ASSIGNMENTCablevision Infrastructure1,674
173.251.128.0173.251.128.0/1732,768allocatedyesUSarinownSPE-NETDIRECT ALLOCATIONSony Pictures Entertainment Inc1,242