Autonomous System
AS203 — CENTURYLINK-LEGACY-LVLT-203 - Level 3 Parent, LLC(US)
Last fetched
AS203 is an Autonomous System operated by CENTURYLINK-LEGACY-LVLT-203 - Level 3 Parent, LLC and registered in US. As of Sun, 30 Aug 2026 05:30:49 GMT, it announces 170 routed IP prefixes and peers with 1 other Autonomous System in the WhisperGraph BGP dataset.
Nutrition Label
Routing footprint
AS203 announces 170 distinct routed prefixes. The 25-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.
- 4.4.61.192/26
- 4.14.40.160/27
- 4.31.172.128/25
- 4.34.203.128/25
- 4.43.86.0/25
- 4.43.87.0/25
- 4.43.138.192/26
- 4.43.139.0/26
- 8.7.155.0/24
- 8.15.229.0/24
- 8.18.63.0/24
- 8.20.69.0/24
- 8.25.26.0/24
- 8.44.205.0/24
- 38.107.240.0/24
- 50.58.252.0/24
- 62.67.221.0/26
- 62.67.222.0/24
- 63.106.6.0/24
- 63.128.1.0/24
- 63.128.0.0/22
- 63.128.7.0/24
- 63.128.8.0/22
- 63.128.12.0/24
- 63.128.14.0/24
Peering ecosystem
1 distinct peers via BGP. The first 1 are listed below.
| Peer ASN | Operator | Country |
|---|---|---|
| AS3356 | LEVEL3 - Level 3 Parent, LLC | US |
Blast radius
Count of dependent hostnames if AS203 disappeared from the routing table.
Blast radius: Computing — check back later. The precompute pipeline refreshes this panel within a few days.
MOAS / hijack watch
Prefixes routed by AS203 that another Autonomous System also announces. A non-empty list is one of the strongest BGP-hijack signals available without active probes.
| Prefix | Conflicting ASN | Operator |
|---|---|---|
| 205.166.171.0/24 | AS26845 | CFN - Fleetcor Technologies Operating Company, LLC |
| 206.227.192.0/24 | AS6109 | NDCHEALTH - NDCHealth Corporation |
| 206.227.193.0/24 | AS6109 | NDCHEALTH - NDCHealth Corporation |
| 206.227.194.0/24 | AS6109 | NDCHEALTH - NDCHealth Corporation |
| 206.227.195.0/24 | AS6109 | NDCHEALTH - NDCHealth Corporation |
| 206.227.196.0/24 | AS6109 | NDCHEALTH - NDCHealth Corporation |
| 206.227.199.0/24 | AS6109 | NDCHEALTH - NDCHealth Corporation |
| 206.227.200.0/24 | AS6109 | NDCHEALTH - NDCHealth Corporation |
| 206.227.205.0/24 | AS6109 | NDCHEALTH - NDCHealth Corporation |
| 206.227.206.0/24 | AS6109 | NDCHEALTH - NDCHealth Corporation |
| 206.227.208.0/24 | AS6109 | NDCHEALTH - NDCHealth Corporation |
| 206.227.209.0/24 | AS6109 | NDCHEALTH - NDCHealth Corporation |
| 206.227.210.0/24 | AS6109 | NDCHEALTH - NDCHealth Corporation |
| 206.227.211.0/24 | AS6109 | NDCHEALTH - NDCHealth Corporation |
| 206.227.216.0/23 | AS6109 | NDCHEALTH - NDCHealth Corporation |
| 206.227.220.0/23 | AS6109 | NDCHEALTH - NDCHealth Corporation |
| 206.227.223.0/24 | AS6109 | NDCHEALTH - NDCHealth Corporation |
| 206.227.226.0/24 | AS6109 | NDCHEALTH - NDCHealth Corporation |
| 206.227.227.0/24 | AS6109 | NDCHEALTH - NDCHealth Corporation |
| 206.227.229.0/24 | AS6109 | NDCHEALTH - NDCHealth Corporation |
| 206.227.233.0/24 | AS6109 | NDCHEALTH - NDCHealth Corporation |
| 206.227.235.0/24 | AS6109 | NDCHEALTH - NDCHealth Corporation |
| 50.58.252.0/24 | AS26845 | CFN - Fleetcor Technologies Operating Company, LLC |
| 63.175.205.0/24 | AS6109 | NDCHEALTH - NDCHealth Corporation |
Threat posture
Related pages
Pivot deeper into the graph from AS203.
Cypher and MCP
Reproduce the headline metric directly against graph.whisper.security:
MATCH (a:ASN {name: "AS203"})-[:HAS_NAME]->(n:ASN_NAME)
OPTIONAL MATCH (a)-[:HAS_COUNTRY]->(c:COUNTRY)
RETURN a.name AS asn, n.name AS operator, c.name AS countryOr query Whisper from your own LLM workflow via the Whisper MCP server.