AS5517 CSL CSL Computer Service Langenbach GmbH

🇩🇪

Org handle: ORG-cA14-RIPE

RIPE NCCallocated

Announced Prefixes (BGP)

4total

3 IPv41 IPv6

IPv4 Addresses

Allocated (RIR)139,776

Announced (BGP)139,264

IPv6 Addresses

Allocated (RIR)7.9×10²⁸

Announced (BGP)1.9×10²⁸

Prefix Limit (IPv4)

200

Prefix Limit (IPv6)

Country

RIR

Status

allocated

Allocated

1996-01-16

Announced Prefixes

(BGP)4

Prefix	RPKI	IRR	Last Seen
159.25.0.0/16	Valid	RIPE	2026-10-11
194.176.0.0/19	Valid	RIPE	2026-10-11
194.245.0.0/16	Valid	RIPE	2026-10-11
2a01:4fc0::/34	Valid	RIPE	2026-10-11

(RIR)5

Prefix	Country	RIR	Status
159.25.0.0/16	🇩🇪 DE	RIPENCC	assigned
159.25.16.0/23	🇩🇪 DE	RIPE	assigned
194.176.0.0/19	🇩🇪 DE	RIPENCC	allocated
194.245.0.0/16	🇩🇪 DE	RIPENCC	allocated
2a01:4fc0::/32	🇩🇪 DE	RIPENCC	allocated

(seen in AS paths)

Networks AS5517 hands its own prefixes to: transit providers, or peers at an exchange.

ASPA

No ASPA

Abuse Contact

External Links

What is an ASN?Autonomous systems, ASN ranges and how they are assigned
RPKI and route origin validationWhat the RPKI badges on the prefix list mean
ASPA explainedWhy AS5517 should publish an ASPA object
IPv4 transfers in the RIPE NCC regionMonthly volume and the latest registry transfers
ASN data in AI agents and SIEMMCP server and API integrations

API

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/5517" | jq