AS51906 RECAST-AS recast IT GmbH & Co. KG

RECAST-AS recast IT GmbH & Co. KG · registered in Germany

IPv4 addresses19,20017 prefixes · <0.001% of announced IPv4

Rank in Germany#240largest network in DE by IPv4 space, of 2,315 · 0.02% of DE

Rank worldwide#6,293of 79,396 networks with IPv4

IPv61 x /32 (65,536 x /48)23 prefixes

CountryGermany2,599 ASNs registered there

Open AS51906 in ASN lookup Look up an IP in this network (31.204.112.1) All networks in Germany

IPv4 prefixes

All 17 prefixes, in address order.

31.204.112.0/22
31.204.116.0/22
31.204.120.0/22
37.130.128.0/21
37.130.136.0/22
37.130.141.0/24
37.130.143.0/24
79.171.56.0/22
79.171.60.0/24
79.171.61.0/24
79.171.62.0/23
82.197.132.0/23
91.106.0.0/20
146.66.224.0/22
146.66.229.0/24
146.66.230.0/23
176.241.160.0/20

IPv6 prefixes

All 23 prefixes.

2001:7f0:101::/48
2a00:7380::/38
2a00:7380:400::/39
2a00:7380:600::/39
2a00:7380:800::/37
2a00:7380:1000::/36
2a00:7380:2000::/35
2a00:7380:4000::/34
2a00:7380:8000::/34
2a00:7380:c000::/35
2a00:7380:e000::/36
2a00:7380:f000::/37
2a00:7380:f800::/38
2a00:7380:fc00::/39
2a00:7380:fe00::/41
2a00:7380:fe80::/42
2a00:7380:fec0::/43
2a00:7380:fee0::/45
2a00:7380:fee8::/46
2a00:7380:feec::/48
2a00:7380:feee::/47
2a00:7380:fef0::/44
2a00:7380:ff00::/40

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IP-to-ASN data: iptoasn.com (public domain). Snapshot downloaded 2026-11-11, refreshed daily. Ranges are what each network announces in BGP, not registry allocations. Data sources