Home ASN LookupAS51906

AS51906 RECAST-AS recast IT GmbH & Co. KG

🇩🇪

Org handle: ORG-rIGC2-RIPE

RIPE NCCallocated

Announced Prefixes (BGP)

16total

13 IPv43 IPv6

IPv4 Addresses

Allocated (RIR)21,760

Announced (BGP)23,296

IPv6 Addresses

Allocated (RIR)1.2×10²⁴

Announced (BGP)7.9×10²⁸

Prefix Limit (IPv4)

Prefix Limit (IPv6)

Country

🇩🇪 DE

RIR

RIPE NCC

Status

allocated

Allocated

2010-11-29

Announced Prefixes

(BGP)16

Prefix	RPKI	IRR	Last Seen
31.204.112.0/20	Valid	RIPE	2026-10-11
31.204.115.0/24	Valid	-	2026-10-11
37.130.128.0/20	Valid	RIPE	2026-10-11
37.130.139.0/24	Valid	RIPE	2026-10-11
37.130.143.0/24	Valid	RIPE	2026-10-11
79.171.56.0/21	Valid	RIPE	2026-10-11
79.171.60.0/24	Valid	RIPE	2026-10-11
79.171.63.0/24	Valid	-	2026-10-11
82.197.132.0/23	Valid	RIPE	2026-10-11
91.106.0.0/20	Valid	RIPE	2026-10-11

1-10 of 16

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Allocated Prefixes

(RIR)11

Prefix	Country	RIR	Status
31.204.112.0/20	🇩🇪 DE	RIPENCC	allocated
37.130.128.0/20	🇩🇪 DE	RIPENCC	allocated
37.130.139.0/24	🇩🇪 DE	RIPE	assigned
79.171.56.0/21	🇩🇪 DE	RIPENCC	allocated
79.171.60.0/24	🇩🇪 DE	RIPE	assigned
79.171.63.0/24	🇩🇪 DE	RIPE	assigned
82.197.132.0/23	🇩🇪 DE	RIPE	assigned
91.106.0.0/20	🇩🇪 DE	RIPENCC	allocated
146.66.224.0/21	🇩🇪 DE	RIPENCC	allocated
176.241.160.0/20	🇩🇪 DE	RIPENCC	allocated

1-10 of 11

1 / 2

All 16 announced prefixes of AS51906 →

BGP Neighbours

(seen in AS paths)

Upstreams (3)

Networks AS51906 hands its own prefixes to: transit providers, or peers at an exchange.

AS13237LAMBDANET EuNetworks10
AS3223VOXILITY LLP3
AS24961MYLOC WIIT3

Downstreams (1)

Networks whose own prefixes AS51906 passes on: usually its customers.

AS205868RECAST HA Recast IT & . KG4

Other adjacent networks (1)

Adjacent to AS51906 in the transit part of AS paths: peers, providers or customers.

AS3356Level 3 Parent1

ASPA

No ASPA

Abuse Contact

External Links

RIPE Whois RIPEstat

Learn more

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 AS51906 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

Open

GEThttps://api.ipctl.io/v1/asn/51906

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

curl -s "https://api.ipctl.io/v1/asn/51906" | jq