IPv4 address

218.2.0.21(CN)AS4134

Last fetched Thu, 21 May 2026 15:58:57 GMT

218.2.0.21 is announced by AS4134 (CHINANET-BACKBONE No.31,Jin-rong Street), located in Nanjing, CN, CN.

Nutrition Label

Attribution

Registered prefix: 218.2.0.0/15
Announced prefix: 218.2.0.0/16
Announcing ASN: AS4134
Operator: CHINANET-BACKBONE No.31,Jin-rong Street
Drift: Registered prefix 218.2.0.0/15 differs from announced prefix 218.2.0.0/16 — RIR allocation does not match current BGP routing. This is a signal worth investigating during incident response.

Anycast detection

No anycast signal detected. Reverse DNS resolves to 50 hostnames; announced prefix is /16; announcing ASN peers with 227 other networks (anycast floor is 10).

Reverse DNS

50 hostnames observed pointing at 218.2.0.21.

Threat posture

Geographic detail

City: Nanjing, CN
Country: CN

History

Pivot deeper into the graph from 218.2.0.21.

Cypher and MCP

Reproduce the IP profile directly against graph.whisper.security:

MATCH (ip:IPV4 {name: "218.2.0.21"})
OPTIONAL MATCH (ip)-[:BELONGS_TO]->(rp:REGISTERED_PREFIX)
OPTIONAL MATCH (ip)-[:ANNOUNCED_BY]->(ap:ANNOUNCED_PREFIX)
                    -[:ROUTES]->(asn:ASN)-[:HAS_NAME]->(n:ASN_NAME)
OPTIONAL MATCH (ip)-[:LOCATED_IN]->(city:CITY)
OPTIONAL MATCH (ip)-[:HAS_COUNTRY]->(country:COUNTRY)
RETURN ip.name AS ip,
       rp.name AS registered_prefix,
       ap.name AS announced_prefix,
       asn.name AS asn,
       n.name AS network,
       city.name AS city,
       country.name AS country

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