General Info

ID

COGENT-NB-0000

Description

Cogent Communications

ASN

AS22241 IC2NET

Country
United States
Registry

arin

Whois Details

NetHandle:      NET-66-28-0-0-1
OrgID:          COGC
Parent:         NET-66-0-0-0-0
NetName:        COGENT-NB-0000
NetRange:       66.28.0.0 - 66.28.255.255
NetType:        allocation
Comment:        ADDRESSES WITHIN THIS BLOCK ARE NON-PORTABLE
Comment:        Reassignment information for this block can be found at
Comment:        rwhois.cogentco.com 4321
RegDate:        2000-10-12
Updated:        2012-03-02
TechHandle:     ZC108-ARIN
Source:         ARIN


OrgID:          COGC
OrgName:        Cogent Communications
CanAllocate:    
Street:         2450 N Street NW
City:           Washington
State/Prov:     DC
Country:        US
PostalCode:     20037
RegDate:        2000-05-30
Updated:        2017-08-17
ReferralServer: rwhois://rwhois.cogentco.com:4321
OrgAdminHandle: IPALL-ARIN
OrgTechHandle:  IPALL-ARIN
OrgNOCHandle:   ZC108-ARIN
OrgAbuseHandle: COGEN-ARIN
Source:         ARIN

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.