Summary
- Hostname
- —
- ASN
- —
- Organization
- Fibertech Networks, LLC
- Network
- LVLT-ORG-159-63
- Range
- 159.63.0.0 - 159.63.255.255
- /24 block
- 159.63.2.0/24
- Country
- US
- Blacklists
- 0 of 14
- Abuse contact
- [email protected]
Presence of 159.63.2.1 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 159.63.2.1
#
# 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: 159.63.0.0 - 159.63.255.255
CIDR: 159.63.0.0/16
NetName: LVLT-ORG-159-63
NetHandle: NET-159-63-0-0-1
Parent: NET159 (NET-159-0-0-0-0)
NetType: Direct Allocation
OriginAS:
Organization: Level 3 Parent, LLC (LPL-141)
RegDate: 1992-03-12
Updated: 2018-02-20
Ref: https://rdap.arin.net/registry/ip/159.63.0.0
Level 3 Parent, LLC (LPL-141)
OrgRoutingHandle: RPKIR-ARIN
OrgRoutingName: RPKI-ROA
OrgRoutingPhone: +1-877-886-6515
OrgRoutingEmail: [email protected]
OrgRoutingRef: https://rdap.arin.net/registry/entity/RPKIR-ARIN
OrgAbuseHandle: LAC56-ARIN
OrgAbuseName: L3 Abuse Contact
OrgAbusePhone: +1-877-453-8353
OrgAbuseEmail: [email protected]
OrgAbuseRef: https://rdap.arin.net/registry/entity/LAC56-ARIN
OrgTechHandle: APL7-ARIN
OrgTechName: ADMIN POC LVLT
OrgTechPhone: +1-877-453-8353
OrgTechEmail: [email protected]
OrgTechRef: https://rdap.arin.net/registry/entity/APL7-ARIN
# end
# start
NetRange: 159.63.0.0 - 159.63.7.255
CIDR: 159.63.0.0/21
NetName: GX-FRO2004368641
NetHandle: NET-159-63-0-0-2
Parent: LVLT-ORG-159-63 (NET-159-63-0-0-1)
NetType: Reallocated
OriginAS:
Organization: Fibertech Networks, LLC (FNL-4)
RegDate: 2011-08-02
Updated: 2011-08-02
Ref: https://rdap.arin.net/registry/ip/159.63.0.0
OrgName: Fibertech Networks, LLC
OrgId: FNL-4
Address: 1805 29th Street, Suite 2050
City: Boulder
StateProv: CO
PostalCode: 80301
Country: US
RegDate: 2005-06-02
Updated: 2026-08-06
Ref: https://rdap.arin.net/registry/entity/FNL-4
OrgAbuseHandle: ABUSE5675-ARIN
OrgAbuseName: Abuse
OrgAbusePhone: +1-866-236-2824
OrgAbuseEmail: [email protected]
OrgAbuseRef: https://rdap.arin.net/registry/entity/ABUSE5675-ARIN
OrgTechHandle: ZIE-ARIN
OrgTechName: Zayo IP Engineering
OrgTechPhone: +1-866-236-2824
OrgTechEmail: [email protected]
OrgTechRef: https://rdap.arin.net/registry/entity/ZIE-ARIN
OrgNOCHandle: ZIE-ARIN
OrgNOCName: Zayo IP Engineering
OrgNOCPhone: +1-866-236-2824
OrgNOCEmail: [email protected]
OrgNOCRef: https://rdap.arin.net/registry/entity/ZIE-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 159.63.2.1.
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 159.63.2.1: 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