Autonomous system
AS4015 CENTURYLINK-LEGACY-QWEST-SPA-OMAHA
Unclassified ARIN
Summary
CenturyLink Communications (legacy Qwest)
transit legacy
CENTURYLINK-LEGACY-QWEST-SPA-OMAHA is held by CenturyLink Communications, LLC,
now part of Lumen Technologies. The handle marks it as one of the Qwest
autonomous systems CenturyLink inherited when it acquired Qwest in 2011.
What it's used for
- Carrying customer and infrastructure address space in Lumen's network, keyed to the Omaha region that Qwest historically served.
- It is one of a whole family of
CENTURYLINK-LEGACY-QWEST-*ASNs kept alive after the merger rather than renumbered into the parent network.
Notable
- The announced prefixes are legacy blocks (including space in
155.70.0.0/16) that predate the CenturyLink era, which is why the ASN name still carries the Qwest lineage two corporate owners later. - Omaha was Qwest's home city, and the company was itself built out of the US West regional Bell operating company.
Interesting
- Big carriers rarely retire acquired ASNs. Renumbering customers is disruptive, so the number and its name survive as a fossil record of who owned the network first.
This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy. Source, and how to suggest an edit.
Address space
Summary
| Country | Name | Prefixes |
|---|---|---|
| US | United States of America | 5 |
Registry
Allocation record
- Registry
- ARIN
- Handle
AS4015- Registry name
- CENTURYLINK-LEGACY-QWEST-SPA-OMAHA
- Registrant
- CenturyLink Communications, LLC
- Abuse contact
- abuse@aup.lumen.com
- Registered
- 1994-11-10
- Last changed
- 2018-10-04
- Status
- active
Reputation
Classification and threat
Unclassified Not in the curated lists. Most of the ~80,000 allocated ASNs are not.
No IC3 indicators Nothing from the FBI IC3 feed.
Threat data is alpha. Absence of an indicator is not evidence of good behaviour, only of absence from this one feed.
Elsewhere