AS209 CenturyLink Communications, LLC
AS209 (CENTURYLINK-US-LEGACY-QWEST) is registered to CenturyLink Communications, LLC in US, through ARIN. It originates 1,618 prefixes in the global routing table.
Who holds AS209
Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.
WHOIS recordARIN
# # 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. # ASNumber: 209 ASName: CENTURYLINK-US-LEGACY-QWEST ASHandle: AS209 RegDate: 1998-11-13 Updated: 2018-10-04 Ref: https://rdap.arin.net/registry/autnum/209 OrgName: CenturyLink Communications, LLC OrgId: CCL-534 Address: 100 CENTURYLINK DR City: Monroe StateProv: LA PostalCode: 71201 Country: US RegDate: 2018-07-12 Updated: 2026-04-22 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: 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: 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: Comment: Our looking glass is located at: https://lookingglass.centurylink.com/ Comment: 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: Comment: For abuse issues, please email abuse@aup.lumen.com 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. Ref: https://rdap.arin.net/registry/entity/CCL-534 OrgTechHandle: QIA-ARIN OrgTechName: Centurylink IP Admin OrgTechPhone: +1-877-886-6515 OrgTechEmail: ipadmin@centurylink.com OrgTechRef: https://rdap.arin.net/registry/entity/QIA-ARIN OrgRoutingHandle: RPKIR-ARIN OrgRoutingName: RPKI-ROA OrgRoutingPhone: +1-877-886-6515 OrgRoutingEmail: rpki-roa@lumen.com OrgRoutingRef: https://rdap.arin.net/registry/entity/RPKIR-ARIN OrgAbuseHandle: CAD54-ARIN OrgAbuseName: Centurylink Abuse Desk OrgAbusePhone: +1-877-886-6515 OrgAbuseEmail: abuse@aup.lumen.com OrgAbuseRef: https://rdap.arin.net/registry/entity/CAD54-ARIN # # 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
What AS209 announces
Prefixes originated by AS209 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).
Announced prefixes
Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.
Show 1,464 more
RPKI valid RPKI invalid no ROA covers it
Who AS209 is reached through
The AS just before AS209 in the paths our looking glass collectors hold, for 60 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.
Provider authorization
AS209 publishes no ASPA of its own. 6 ASes name it as a provider in theirs. Check a path.
The 6 ASes that name AS209 as a provider
Routing registry objects
From the mirrored IRR databases (RADB, the five RIRs and more). Look it up live.
| Source | as-name | Maintained by |
|---|---|---|
| LEVEL3 | Centurylink | MAINT-CENTURYLINK |
Route objects with origin AS209: LEVEL3 94 · ARIN 33 · RADB 4 · ALTDB 1 · NTTCOM 1