Summary

NetName
COGENT-A
OrgName
Cogent Communications, LLC
CIDR
RIR

ARIN

Country

Status

Direct Allocation

Abuse

abuse@cogentco.com

Contact

ipalloc@cogentco.com

RegDate

1991-04-16

Updated

2025-09-23

Whois

NetRange:       38.0.0.0 - 38.255.255.255
CIDR:           38.0.0.0/8
NetName:        COGENT-A
NetHandle:      NET-38-0-0-0-1
Parent:          ()
NetType:        Direct Allocation
OriginAS:
Organization:   Cogent Communications, LLC (COGC)
RegDate:        1991-04-16
Updated:        2025-09-23
Ref:            https://rdap.arin.net/registry/ip/38.0.0.0

OrgName:        Cogent Communications, LLC
OrgId:          COGC
Address:        2450 N Street NW
City:           Washington
StateProv:      DC
PostalCode:     20037
Country:        US
RegDate:        2000-05-30
Updated:        2025-09-23
Comment:        Geofeed https://geofeed.cogentco.com/geofeed.csv
Ref:            https://rdap.arin.net/registry/entity/COGC

ReferralServer:  rwhois://rwhois.cogentco.com:4321

OrgTechHandle: IPALL-ARIN
OrgTechName:   IP Allocation
OrgTechPhone:  +1-877-875-4311
OrgTechEmail:  ipalloc@cogentco.com
OrgTechRef:    https://rdap.arin.net/registry/entity/IPALL-ARIN

OrgNOCHandle: ZC108-ARIN
OrgNOCName:   Cogent Communications
OrgNOCPhone:  +1-877-875-4311
OrgNOCEmail:  noc@cogentco.com
OrgNOCRef:    https://rdap.arin.net/registry/entity/ZC108-ARIN

OrgAbuseHandle: COGEN-ARIN
OrgAbuseName:   Cogent Abuse
OrgAbusePhone:  +1-877-875-4311
OrgAbuseEmail:  abuse@cogentco.com
OrgAbuseRef:    https://rdap.arin.net/registry/entity/COGEN-ARIN

CIDR

38.237.0.0/24 38.237.1.0/24 38.237.2.0/24 38.237.3.0/24
38.237.5.0/24 38.237.6.0/24 38.237.7.0/24 38.237.8.0/24
38.237.10.0/24 38.237.11.0/24 38.237.12.0/24 38.237.13.0/24
38.237.15.0/24 38.237.16.0/24 38.237.17.0/24 38.237.18.0/24
38.237.20.0/24 38.237.21.0/24 38.237.22.0/24 38.237.23.0/24
38.237.25.0/24 38.237.26.0/24 38.237.27.0/24 38.237.28.0/24
38.237.30.0/24 38.237.31.0/24 38.237.32.0/24 38.237.33.0/24
38.237.35.0/24 38.237.36.0/24 38.237.37.0/24 38.237.38.0/24
38.237.40.0/24 38.237.41.0/24 38.237.42.0/24 38.237.43.0/24
38.237.45.0/24 38.237.46.0/24 38.237.47.0/24 38.237.48.0/24
38.237.50.0/24 38.237.51.0/24 38.237.52.0/24 38.237.53.0/24
38.237.55.0/24 38.237.56.0/24 38.237.57.0/24 38.237.58.0/24
38.237.60.0/24 38.237.61.0/24 38.237.62.0/24 38.237.63.0/24
38.237.65.0/24 38.237.66.0/24 38.237.67.0/24 38.237.68.0/24
38.237.70.0/24 38.237.71.0/24 38.237.72.0/24 38.237.73.0/24
38.237.75.0/24 38.237.76.0/24 38.237.77.0/24 38.237.78.0/24
38.237.80.0/24 38.237.81.0/24 38.237.82.0/24 38.237.83.0/24
38.237.85.0/24 38.237.86.0/24 38.237.87.0/24 38.237.88.0/24
38.237.90.0/24 38.237.91.0/24 38.237.92.0/24 38.237.93.0/24
38.237.95.0/24 38.237.96.0/24 38.237.97.0/24 38.237.98.0/24
38.237.100.0/24 38.237.101.0/24 38.237.102.0/24 38.237.103.0/24
38.237.105.0/24 38.237.106.0/24 38.237.107.0/24 38.237.108.0/24
38.237.110.0/24 38.237.111.0/24 38.237.112.0/24 38.237.113.0/24
38.237.115.0/24 38.237.116.0/24 38.237.117.0/24 38.237.118.0/24
38.237.120.0/24 38.237.121.0/24 38.237.122.0/24 38.237.123.0/24
38.237.125.0/24 38.237.126.0/24 38.237.127.0/24 38.237.128.0/24
38.237.130.0/24 38.237.131.0/24 38.237.132.0/24 38.237.133.0/24
38.237.135.0/24 38.237.136.0/24 38.237.137.0/24 38.237.138.0/24
38.237.140.0/24 38.237.141.0/24 38.237.142.0/24 38.237.143.0/24
38.237.145.0/24 38.237.146.0/24 38.237.147.0/24 38.237.148.0/24
38.237.150.0/24 38.237.151.0/24 38.237.152.0/24 38.237.153.0/24
38.237.155.0/24 38.237.156.0/24 38.237.157.0/24 38.237.158.0/24
38.237.160.0/24 38.237.161.0/24 38.237.162.0/24 38.237.163.0/24
38.237.165.0/24 38.237.166.0/24 38.237.167.0/24 38.237.168.0/24
38.237.170.0/24 38.237.171.0/24 38.237.172.0/24 38.237.173.0/24
38.237.175.0/24 38.237.176.0/24 38.237.177.0/24 38.237.178.0/24
38.237.180.0/24 38.237.181.0/24 38.237.182.0/24 38.237.183.0/24
38.237.185.0/24 38.237.186.0/24 38.237.187.0/24 38.237.188.0/24
38.237.190.0/24 38.237.191.0/24 38.237.192.0/24 38.237.193.0/24
38.237.195.0/24 38.237.196.0/24 38.237.197.0/24 38.237.198.0/24
38.237.200.0/24 38.237.201.0/24 38.237.202.0/24 38.237.203.0/24
38.237.205.0/24 38.237.206.0/24 38.237.207.0/24 38.237.208.0/24
38.237.210.0/24 38.237.211.0/24 38.237.212.0/24 38.237.213.0/24
38.237.215.0/24 38.237.216.0/24 38.237.217.0/24 38.237.218.0/24
38.237.220.0/24 38.237.221.0/24 38.237.222.0/24 38.237.223.0/24
38.237.225.0/24 38.237.226.0/24 38.237.227.0/24 38.237.228.0/24
38.237.230.0/24 38.237.231.0/24 38.237.232.0/24 38.237.233.0/24
38.237.235.0/24 38.237.236.0/24 38.237.237.0/24 38.237.238.0/24
38.237.240.0/24 38.237.241.0/24 38.237.242.0/24 38.237.243.0/24
38.237.245.0/24 38.237.246.0/24 38.237.247.0/24 38.237.248.0/24
38.237.250.0/24 38.237.251.0/24 38.237.252.0/24 38.237.253.0/24
38.237.255.0/24