AS12638 AS12638 Telefonica Germany GmbH & Co.OHG

AS12638 Telefonica Germany GmbH & Co.OHG · registered in Germany

IPv4 addresses49,1523 prefixes · 0.002% of announced IPv4

Rank in Germany#133largest network in DE by IPv4 space, of 2,315 · 0.04% of DE

Rank worldwide#3,972of 79,396 networks with IPv4

IPv6noneno IPv6 routes announced

CountryGermany2,599 ASNs registered there

Open AS12638 in ASN lookup Look up an IP in this network (5.1.128.1) All networks in Germany

IPv4 prefixes

All 3 prefixes, in address order.

5.1.128.0/17
193.7.128.0/19
212.23.96.0/19

Similar-sized networks in Germany

ASNNameIPv4 addresses

AS20880#130 TC-TELECOLUMBUS Tele Columbus AG50,176

AS58243#131 TELEAG TELE AG49,920

AS12693#132 ediscom e.discom Telekommunikation GmbH49,152

AS12886#134 LEWTELNET LEW TelNet GmbH48,384

AS44076#135 SCHWARZ-IT INTAC Services GmbH48,384

AS44716#136 DHOSTING-NET D-hosting die Rackspace & Connectivity GmbH48,384

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