AS Number
AS6223
AS Name
CENTURYLINK-MTIPS1-STN
Org Name
CenturyLink Communications, LLC
Country / Region
United States
Registry

arin

RegDate

2018-07-12

Updated

2026-04-22

AS6223 Looking Glass
IPv4Prefixes

3

IPv6Prefixes

2

IPv4 NUMs

2,560

IPv6 NUMs(/64)

1,114,112

CIDR Description IP Num
65.144.124.0/24
CenturyLink Communications, LLC 256
199.248.197.0/24
Selective Service System 256
208.68.144.0/21
Export Import Bank of the U.S 2048
CIDR Description IP NUMs(prefix /64)
2602:814:9000::/44
Selective Service System 1048576
2620:0:960::/48
Export Import Bank of the U.S 65536
AS Description Country / Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS209 CENTURYLINK-US-LEGACY-QWEST - CenturyLink Communications, LLC, US United States 19,845,376 1,116,691,759,104 IPv4 IPv4 IPv6 IPv6
AS Description Country / Region IPv4 NUMs IPv6 NUMs IPv4 IPv6
AS395700 OMB-ASN - Executive Office Of The President, US United States 512 262,144 IPv4 IPv4 IPv6 IPv6
AS102 NSF-HQ-AS - U.S. National Science Foundation, US United States 66,048 16,777,216 IPv4 IPv4 IPv6 IPv6
AS3930 FERC-FED-US - Federal Energy Regulatory Commission, US United States 4,096 0 IPv4 IPv4
AS4155 USDA-1 - USDA, US United States 3,147,776 1,099,511,627,776 IPv4 IPv4 IPv6 IPv6
AS11724 OCCAS - Comptroller of the Currency, US United States 1,792 0 IPv4 IPv4
AS39983 PBGC-HQ-AS - Pension Benefit Guaranty Corp., US United States 512 0 IPv4 IPv4
AS53554 NCUA-GOV---NATIONAL-CREDIT-UNION-ADMINISTRATION - National Credit Union Administration, US United States 768 0 IPv4 IPv4
ASNumber:       6223
ASName:         CENTURYLINK-MTIPS1-STN
ASHandle:       AS6223
RegDate:        1996-01-25
Updated:        2020-10-20
Ref:            https://rdap.arin.net/registry/autnum/6223

OrgID:          CCL-534
OrgName:        CenturyLink Communications, LLC
CanAllocate:    
Street:         100 CENTURYLINK DR
City:           Monroe
State/Prov:     LA
Country:        US
PostalCode:     71201
Comment:        USAGE OF IP SPACE MUST COMPLY WITH OUR ACCEPTABLE USE POLICY:
Comment:        https://www.lumen.com/en-us/about/legal/acceptable-use-policy.html
Comment:        ADDRESSES COVERED BY THIS ORG-ID ARE NON-PORTABLE ANY ISP ANNOUNCING OR TRANSITING PORTIONS WITHIN OUR RANGES SHOULD NOT RELY ON PRESENTED LOA'S OR OLD WHOIS UNLESS THOSE RANGES ARE ALSO ACTIVELY DIRECTLY ANNOUNCED TO A LUMEN ASN. WITH ALL LOA'S THESE CONDITIONS APPLY:
Comment:        1. You are permitted to route the Lumen IP prefixes listed via Public BGP to your alternate ISP from the designated ASN. Any other ASN originating the prefix listed is forbidden.
Comment:        2. The Lumen IP prefixes listed can be routed via Public BGP to your alternate ISP as long as you remain an active customer with Lumen and continue to route the prefixes over at least one Lumen Internet circuit without significant traffic engineering.
Comment:        3. Should your Internet services with Lumen be discontinued, Lumen reserves the right to have your alternate ISP terminate the routing of the Lumen IP prefixes without advanced notification, should you fail to do so.
Comment:        4. All IP Addresses assigned or allocated by Lumen to an end-user (customer or ISP) shall be considered non-portable and will be reclaimed by Lumen upon service termination.
Comment:        5. Lumen reserves the right to conduct audits to ensure the LOA conditions are being met.
Comment:        6. Usage of IP space must comply with our AUP https://www.lumen.com/en-us/about/legal/acceptable-use-policy.html
Comment:        Our looking glass is located at: https://lookingglass.centurylink.com/
Comment:        For subpoena or court order please fax 844.254.5800 or refer to our Trust & Safety page:
Comment:        https://www.lumen.com/en-us/about/legal/trust-center/trust-and-safety.html
Comment:        For abuse issues, please email [email protected]
Comment:        All abuse reports MUST include:
Comment:        * src IP
Comment:        * dest IP (your IP)
Comment:        * dest port
Comment:        * Accurate date/timestamp and timezone of activity
Comment:        * Intensity/frequency (short log extracts)
Comment:        * Your contact details (phone and email)
Comment:        Without these we will be unable to identify the correct owner of the IP address at that point in time.
RegDate:        2018-07-12
Updated:        2026-04-22
OrgAdminHandle  QIA-ARIN
OrgTechHandle   QIA-ARIN
OrgAbuseHandle  CAD54-ARIN
OrgRoutingHandle RPKIR-ARIN
Source:         ARIN

OrgAbuseHandleHandle:  CAD54-ARIN
OrgAbuseHandleName:    Centurylink Abuse Desk, 
OrgAbuseHandlePhone:   +1-877-886-6515
OrgAbuseHandleEmail:   [email protected]
OrgAbuseHandleRef:     https://rdap.arin.net/registry/entity/CAD54-ARIN

OrgRoutingHandleHandle:  RPKIR-ARIN
OrgRoutingHandleName:    RPKI-ROA, 
OrgRoutingHandlePhone:   +1-877-886-6515
OrgRoutingHandleEmail:   [email protected]
OrgRoutingHandleRef:     https://rdap.arin.net/registry/entity/RPKIR-ARIN

OrgAdminHandleHandle:  QIA-ARIN
OrgAdminHandleName:    Centurylink IP Admin, 
OrgAdminHandlePhone:   +1-877-886-6515
OrgAdminHandleEmail:   [email protected]
OrgAdminHandleRef:     https://rdap.arin.net/registry/entity/QIA-ARIN

OrgTechHandleHandle:  QIA-ARIN
OrgTechHandleName:    Centurylink IP Admin, 
OrgTechHandlePhone:   +1-877-886-6515
OrgTechHandleEmail:   [email protected]
OrgTechHandleRef:     https://rdap.arin.net/registry/entity/QIA-ARIN