Country
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ASN LANDING PAGE
AS209
CENTURYLINK-US-LEGACY-QWEST - CenturyLink Communications, LLC
Last updated · Jul 20, 2026
Total prefixes
1627
IPv4 prefixes
1595
IPv6 prefixes
32
ASN summary
How to read the scale of AS209
CENTURYLINK-US-LEGACY-QWEST - CenturyLink Communications, LLC currently reports 1627 prefixes and 41 upstream, downstream, or peer relationships. These counts describe the current dataset; they do not by themselves prove network quality, reach, or service use.
What can an ASN page answer?
An ASN page shows the public organization label, country or region, BGP prefixes, and available peer and upstream relationships. It adds network context but cannot confirm a website host, physical facility, security status, or service quality.
How should you read the organization and region fields?
CENTURYLINK-US-LEGACY-QWEST - CenturyLink Communications, LLC is currently associated with an unknown region. These values come from public network sources and are useful lookup clues; an organization label, registration region, and actual service location may differ.
How should you verify the AS209 result?
The page shows ASN data returned by the current upstream query; interpret it with the update time. Open representative IP pages from the same network and compare prefixes, source labels, and query times. Verify operator or service claims with the relevant registry or network operator.
How to verify this ASN result
AS209 ASN lookupAS209 BGPAS209 peersAS209 prefixesAS209 upstreamsCENTURYLINK-US-LEGACY-QWEST - CenturyLink Communications, LLC ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
AS22561
AS22561
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AS6223
AS6223
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AS297
AS297
—
AS6224
AS6224
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AS4297
AS4297
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AS18530
AS18530
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AS30221
AS30221
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AS32083
AS32083
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AS396908
AS396908
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AS11857
AS11857
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AS26848
AS26848
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AS46182
AS46182
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AS19800
AS19800
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AS3561
AS3561
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AS4296
AS4296
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AS3909
AS3909
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AS4015
AS4015
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AS7359
AS7359
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AS36811
AS36811
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AS62645
AS62645
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AS11985
AS11985
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AS7743
AS7743
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AS13325
AS13325
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AS13866
AS13866
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AS13684
AS13684
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AS397045
AS397045
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AS397041
AS397041
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AS12086
AS12086
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AS400008
AS400008
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AS27013
AS27013
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AS21904
AS21904
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AS10695
AS10695
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AS32904
AS32904
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AS396402
AS396402
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AS10599
AS10599
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AS63486
AS63486
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AS33222
AS33222
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AS394329
AS394329
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AS4211
AS4211
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AS13659
AS13659
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Peers
Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 130.13.128.0/19 | AS209 | — |
| 130.13.160.0/24 | AS209 | — |
| 137.107.65.0/24 | AS209 | — |
| 138.210.0.0/16 | AS209 | — |
| 138.210.132.0/23 | AS209 | — |
| 138.210.134.0/24 | AS209 | — |
| 138.210.71.0/24 | AS209 | — |
| 143.61.91.0/24 | AS209 | — |
| 144.163.0.0/16 | AS209 | — |
| 146.174.238.0/23 | AS209 | — |
| 148.156.96.0/23 | AS209 | — |
| 149.64.224.0/24 | AS209 | — |
| 161.203.14.0/23 | AS209 | — |
| 161.203.16.0/23 | AS209 | — |
| 161.203.18.0/23 | AS209 | — |
| 161.203.22.0/23 | AS209 | — |
| 161.203.24.0/23 | AS209 | — |
| 161.203.26.0/23 | AS209 | — |
| 162.104.0.0/16 | AS209 | — |
| 162.242.94.0/23 | AS209 | — |
| 168.103.0.0/16 | AS209 | — |
| 168.103.128.0/20 | AS209 | — |
| 168.103.144.0/20 | AS209 | — |
| 168.103.160.0/20 | AS209 | — |
| 168.103.176.0/20 | AS209 | — |
| 168.103.192.0/19 | AS209 | — |
| 168.103.20.0/23 | AS209 | — |
| 168.103.224.0/20 | AS209 | — |
| 168.103.240.0/22 | AS209 | — |
| 168.103.244.0/22 | AS209 | — |
| 168.103.28.0/22 | AS209 | — |
| 168.103.36.0/22 | AS209 | — |
| 168.103.4.0/22 | AS209 | — |
| 168.103.40.0/21 | AS209 | — |
| 168.103.52.0/22 | AS209 | — |
| 168.103.56.0/21 | AS209 | — |
| 168.103.64.0/19 | AS209 | — |
| 168.103.96.0/19 | AS209 | — |
| 168.251.0.0/16 | AS209 | — |
| 173.202.0.0/16 | AS209 | — |
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Related lookups and next steps
Frequently asked questions about this ASN page
What does AS209 represent?
AS209 is an autonomous system number. The current source associates it with CENTURYLINK-US-LEGACY-QWEST - CenturyLink Communications, LLC and the region field an unknown region; those values add network context but do not prove a specific service, physical location, or quality level.
What are peers, upstreams, and prefixes useful for on the AS209 page?
They help explain the scale, interconnection depth, and route structure of AS209. Richer peering and upstream data often indicate broader network reach, but they should still be interpreted together with prefixes and related IP landing pages.
What should you do after reviewing AS209?
Open a concrete IP page to check how the address maps into AS209, then compare the prefix, source labels, and query time. Verify operator or service claims with the relevant registry or network operator.
Related topics
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