Summary
- Hostname
- —
- ASN
- —
- Organization
- Cogent Communications, LLC
- Network
- COGENT-A
- Range
- 38.0.0.0 - 38.255.255.255
- /24 block
- 38.55.114.0/24
- Country
- US
- Blacklists
- 0 of 14
- Abuse contact
- [email protected]
Presence of 38.55.114.144 in blacklists
| List | Status |
|---|---|
| zen.spamhaus.org | Not listed |
| bl.spamcop.net | Not listed |
| black.junkemailfilter.com | Not listed |
| multi.surbl.org | Not listed |
| dnsbl.sorbs.net | Not listed |
| b.barracudacentral.org | Not listed |
| dnsbl.tornevall.org | Not listed |
| dnsbl.httpbl.org | Not listed |
| dnsbl-1.uceprotect.net | Not listed |
| dnsbl-2.uceprotect.net | Not listed |
| dnsbl-3.uceprotect.net | Not listed |
| v4.fullbogons.cymru.com | Not listed |
| bl.blocklist.de | Not listed |
| rbl.blockedservers.com | Not listed |
What is a blacklist (RBL)?
An RBL (Real-time Blackhole List), also known as a DNSBL (DNS-based Blackhole List), is a mechanism used to fight spam by blocking e-mails coming from sources known to send spam. RBLs are databases listing the IP addresses deemed responsible for sending unsolicited e-mail. Mail server administrators use these lists to filter incoming e-mails by checking whether the sender's IP address appears in one or more RBLs. If it does, the e-mail may be rejected or subjected to additional checks.
There are different types of RBLs, each with its own criteria for listing IP addresses. Some focus on IP addresses that send spam directly, while others list IP addresses belonging to networks known to host computers infected with malware and used as bots to send spam. RBL operators keep their lists up to date through automatic and manual contributions, and IP address owners can often request removal from a list if they believe the listing is unjustified.
WHOIS data for 38.55.114.144
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#
# start
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: [email protected]
OrgTechRef: https://rdap.arin.net/registry/entity/IPALL-ARIN
OrgNOCHandle: ZC108-ARIN
OrgNOCName: Cogent Communications
OrgNOCPhone: +1-877-875-4311
OrgNOCEmail: [email protected]
OrgNOCRef: https://rdap.arin.net/registry/entity/ZC108-ARIN
OrgAbuseHandle: COGEN-ARIN
OrgAbuseName: Cogent Abuse
OrgAbusePhone: +1-877-875-4311
OrgAbuseEmail: [email protected]
OrgAbuseRef: https://rdap.arin.net/registry/entity/COGEN-ARIN
# end
# start
NetRange: 38.55.96.0 - 38.55.127.255
CIDR: 38.55.96.0/19
NetName: XNNET-CGNT-NET-2
NetHandle: NET-38-55-96-0-1
Parent: COGENT-A (NET-38-0-0-0-1)
NetType: Reallocated
OriginAS:
Organization: XNNET LLC (XL-94)
RegDate: 2022-02-10
Updated: 2022-02-10
Ref: https://rdap.arin.net/registry/ip/38.55.96.0
OrgName: XNNET LLC
OrgId: XL-94
Address: 201 East 5th St. STE 1200
City: Sheridan
StateProv: WY
PostalCode: 82801
Country: US
RegDate: 2019-05-13
Updated: 2021-11-29
Ref: https://rdap.arin.net/registry/entity/XL-94
OrgNOCHandle: XLN-ARIN
OrgNOCName: XNNET LLC NOC
OrgNOCPhone: +1-805-723-0001
OrgNOCEmail: [email protected]
OrgNOCRef: https://rdap.arin.net/registry/entity/XLN-ARIN
OrgAbuseHandle: XLN-ARIN
OrgAbuseName: XNNET LLC NOC
OrgAbusePhone: +1-805-723-0001
OrgAbuseEmail: [email protected]
OrgAbuseRef: https://rdap.arin.net/registry/entity/XLN-ARIN
OrgTechHandle: XLN-ARIN
OrgTechName: XNNET LLC NOC
OrgTechPhone: +1-805-723-0001
OrgTechEmail: [email protected]
OrgTechRef: https://rdap.arin.net/registry/entity/XLN-ARIN
# end
#
# ARIN WHOIS data and services are subject to the Terms of Use
# available at: https://www.arin.net/resources/registry/whois/tou/
#
# If you see inaccuracies in the results, please report at
# https://www.arin.net/resources/registry/whois/inaccuracy_reporting/
#
# Copyright 1997-2026, American Registry for Internet Numbers, Ltd.
#
Related domain names
Domains mentioned in the reverse DNS and the WHOIS of 38.55.114.144.
What is an IP address?
An IP address is a unique identifier on the internet that identifies a server or an internet user. Here the IP address is 38.55.114.144: it may be the unique address used to reach a website, or the unique address of an internet user.
An SMTP server (a server used to send e-mails) must have a reverse DNS record associated with its IP address