General Info
Whois Details
inetnum: 77.77.58.0 - 77.77.59.255 netname: ULTRANET-NET descr: UltraNET Ltd country: BG admin-c: IT711-RIPE tech-c: IT711-RIPE status: ASSIGNED PA mnt-by: MNT-BGULTRANET created: 2008-05-15T07:43:58Z last-modified: 2008-07-18T08:26:16Z source: RIPE person: Ivan Tushev address: UltraNET Ltd address: 14, Peter Beron str. address: 2800 Sandanski, Bulgaria phone: +359 885511000 fax-no: +359 73832271 e-mail: admin@ultranet.biz abuse-mailbox: abuse@ultranet.biz nic-hdl: IT711-RIPE mnt-by: MNT-BGULTRANET created: 2005-08-02T07:29:48Z last-modified: 2014-04-10T20:37:38Z source: RIPE route: 77.77.0.0/18 descr: UltraNET Ltd. descr: Second IPv4 Allocation Block origin: AS39184 mnt-by: MNT-BGULTRANET created: 2007-08-21T10:22:26Z last-modified: 2007-08-21T10:22:26Z source: RIPE
IP Addresses in this range
Details
IP address ranges, or netblocks, are groups of related IP addresses. They are usually represented as a base IP address, followed by a slash, and then a netmask which represents how many IP addresses are contained within the netblock. This format is known as CIDR. You'll also sometimes see netblocks given as a start ip address, and an end ip address, or an ip address range.
Traffic works its way around the internet based on the routing table, which contains a list of networks and their associated netblocks.