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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 Tue, 04 Aug 2026 03:31:22 GMT, it announces 137 routed IP prefixes and peers with 1 other Autonomous System in the WhisperGraph BGP dataset.

Nutrition Label

WHISPER CANON · AS203Routing diversity10.0/10Peering density1.2/10MOAS conflict⚠ 3 conflictsThreat-feed listings—WHOIS transparency—Resolver footprint—canon.whisper.security/asn/203

Routing footprint

AS203 announces 137 distinct routed prefixes. The 25-prefix sample below links to per-prefix pages with full conflict and reverse-DNS detail.

Peering ecosystem

1 distinct peers via BGP. The first 1 are listed below.

Peer ASNOperatorCountry
AS3356LEVEL3 - Level 3 Parent, LLCUS

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.

PrefixConflicting ASNOperator
143.199.140.0/23AS21680GWLNET - Empower Retirement, LLC
143.199.96.0/24AS21680GWLNET - Empower Retirement, LLC
148.59.168.0/24AS26845CFN - Fleetcor Technologies Operating Company, LLC
216.114.73.0/24AS400494CIRRASCALE-CLOUD-01 - Cirrascale Cloud Services LLC

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 country

Or query Whisper from your own LLM workflow via the Whisper MCP server.