AS48951 ASN-TSI-IAS Telekom Deutschland GmbH

ASN-TSI-IAS Telekom Deutschland GmbH · registered in Germany

IPv4 addresses47,61611 prefixes · 0.002% of announced IPv4

Rank in Germany#137largest network in DE by IPv4 space, of 2,315 · 0.04% of DE

Rank worldwide#4,017of 79,396 networks with IPv4

IPv68 x /32 (524,288 x /48)35 prefixes

CountryGermany2,599 ASNs registered there

Open AS48951 in ASN lookup Look up an IP in this network (78.140.64.1) All networks in Germany

IPv4 prefixes

All 11 prefixes, in address order.

78.140.64.0/23
78.140.66.0/24
78.140.72.0/24
78.140.76.0/24
81.7.208.0/20
82.210.224.0/19
93.122.0.0/18
93.122.64.0/19
93.122.96.0/19
185.149.164.0/22
194.41.39.0/24

IPv6 prefixes

All 35 prefixes.

2a01:660::/30
2a01:664::/37
2a01:664:800::/38
2a01:664:c00::/38
2a01:664:1000::/37
2a01:664:1800::/40
2a01:664:1900::/40
2a01:664:1a00::/39
2a01:664:1c00::/38
2a01:664:2000::/35
2a01:664:4000::/34
2a01:664:8000::/33
2a01:665::/32
2a01:666::/40
2a01:666:100::/40
2a01:666:200::/39
2a01:666:400::/40
2a01:666:500::/40
2a01:666:600::/39
2a01:666:800::/37
2a01:666:1000::/36
2a01:666:2000::/35
2a01:666:4000::/34
2a01:666:8000::/33
2a01:667::/40
2a01:667:100::/40
2a01:667:200::/39
2a01:667:400::/40
2a01:667:500::/40
2a01:667:600::/39
2a01:667:800::/37
2a01:667:1000::/36
2a01:667:2000::/35
2a01:667:4000::/34
2a01:667:8000::/33

Similar-sized networks in Germany

ASNNameIPv4 addresses

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

AS198967#138 BITel-Gesellschaft-fuer-Telekommunikation-AS BITel Gesellschaft fuer Telekommunikation mbH47,360

AS8823#139 AutonomousSystemRockensteinAG Rockenstein AG45,824

AS21473#140 PFALZKOM PFALZKOM GmbH45,056

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