AS203175 rto RTO GmbH

rto RTO GmbH · registered in Germany

IPv4 addresses1,0241 prefixes · <0.001% of announced IPv4

Rank in Germany#1,339largest network in DE by IPv4 space, of 2,315 · <0.01% of DE

Rank worldwide#39,877of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryGermany2,599 ASNs registered there

Open AS203175 in ASN lookup Look up an IP in this network (185.137.28.1) All networks in Germany

IPv4 prefixes

All 1 prefix, in address order.

185.137.28.0/22

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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