Country
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ASN LANDING PAGE
AS398991
X99-US - X99
Last updated · Jul 20, 2026
Total prefixes
69
IPv4 prefixes
63
IPv6 prefixes
6
ASN summary
How to read the scale of AS398991
X99-US - X99 currently reports 69 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?
X99-US - X99 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 AS398991 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
AS398991 ASN lookupAS398991 BGPAS398991 peersAS398991 prefixesAS398991 upstreamsX99-US - X99 ASN
Upstreams
Detailed data for this ASN is not available right now.
Downstreams
Peers
AS272786
AS272786
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AS60068
AS60068
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AS2914
AS2914
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AS174
AS174
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AS6939
AS6939
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AS6762
AS6762
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AS3303
AS3303
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AS25091
AS25091
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AS58453
AS58453
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AS137409
AS137409
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AS4230
AS4230
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AS7195
AS7195
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AS37468
AS37468
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AS1828
AS1828
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AS6057
AS6057
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AS13786
AS13786
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AS14840
AS14840
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AS19151
AS19151
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AS20080
AS20080
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AS22356
AS22356
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AS24482
AS24482
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AS36236
AS36236
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AS52320
AS52320
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AS61573
AS61573
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AS199524
AS199524
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AS971
AS971
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AS1031
AS1031
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AS7575
AS7575
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AS14907
AS14907
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AS17639
AS17639
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AS35280
AS35280
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AS45489
AS45489
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AS49544
AS49544
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AS51185
AS51185
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AS64126
AS64126
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AS209823
AS209823
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AS263152
AS263152
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AS263237
AS263237
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AS271253
AS271253
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Prefix inventory
| Prefix | Name | Country |
|---|---|---|
| 130.250.188.0/23 | AS398991 | — |
| 130.250.188.0/24 | AS398991 | — |
| 130.250.189.0/24 | AS398991 | — |
| 142.99.102.0/23 | AS398991 | — |
| 142.99.102.0/24 | AS398991 | — |
| 142.99.103.0/24 | AS398991 | — |
| 142.99.99.0/24 | AS398991 | — |
| 184.154.240.0/23 | AS398991 | — |
| 184.154.242.0/23 | AS398991 | — |
| 184.154.242.0/24 | AS398991 | — |
| 184.154.243.0/24 | AS398991 | — |
| 184.154.244.0/23 | AS398991 | — |
| 184.154.244.0/24 | AS398991 | — |
| 184.154.245.0/24 | AS398991 | — |
| 198.13.16.0/23 | AS398991 | — |
| 198.13.16.0/24 | AS398991 | — |
| 198.13.17.0/24 | AS398991 | — |
| 199.245.233.0/24 | AS398991 | — |
| 199.245.234.0/24 | AS398991 | — |
| 206.109.56.0/23 | AS398991 | — |
| 206.109.56.0/24 | AS398991 | — |
| 206.109.57.0/24 | AS398991 | — |
| 206.109.58.0/23 | AS398991 | — |
| 206.109.58.0/24 | AS398991 | — |
| 206.109.59.0/24 | AS398991 | — |
| 208.122.16.0/23 | AS398991 | — |
| 208.122.16.0/24 | AS398991 | — |
| 208.122.17.0/24 | AS398991 | — |
| 208.122.18.0/23 | AS398991 | — |
| 208.122.18.0/24 | AS398991 | — |
| 208.122.19.0/24 | AS398991 | — |
| 209.131.120.0/23 | AS398991 | — |
| 209.131.120.0/24 | AS398991 | — |
| 209.131.121.0/24 | AS398991 | — |
| 209.131.122.0/23 | AS398991 | — |
| 209.131.122.0/24 | AS398991 | — |
| 209.131.123.0/24 | AS398991 | — |
| 209.14.152.0/24 | AS398991 | — |
| 209.14.153.0/24 | AS398991 | — |
| 23.231.97.0/24 | AS398991 | — |
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Related lookups and next steps
Frequently asked questions about this ASN page
What does AS398991 represent?
AS398991 is an autonomous system number. The current source associates it with X99-US - X99 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 AS398991 page?
They help explain the scale, interconnection depth, and route structure of AS398991. 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 AS398991?
Open a concrete IP page to check how the address maps into AS398991, 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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Routing Troubleshooting and Network Analysis
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Cloud Network and ASN Comparison
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