HTTPfy

AS25291 SYSELEVEN SysEleven GmbH

SYSELEVEN SysEleven GmbH · registered in Germany

IPv4 addresses37,12038 prefixes · 0.001% of announced IPv4
Rank in Germany#153largest network in DE by IPv4 space, of 2,315 · 0.03% of DE
Rank worldwide#4,455of 79,396 networks with IPv4
IPv61 x /32 (105,472 x /48)44 prefixes
CountryGermany2,599 ASNs registered there
Open AS25291 in ASN lookup Look up an IP in this network (37.44.0.1) All networks in Germany

IPv4 prefixes

All 38 prefixes, in address order.

  • 37.44.0.0/23
  • 37.44.2.0/23
  • 37.44.4.0/22
  • 37.49.152.0/23
  • 37.49.154.0/23
  • 37.49.156.0/22
  • 37.123.104.0/23
  • 37.123.106.0/24
  • 37.123.107.0/24
  • 37.123.108.0/22
  • 77.247.80.0/22
  • 77.247.84.0/24
  • 77.247.85.0/24
  • 77.247.86.0/23
  • 109.68.224.0/23
  • 109.68.226.0/23
  • 109.68.228.0/23
  • 109.68.230.0/24
  • 109.68.231.0/24
  • 147.93.208.0/23
  • 147.93.210.0/24
  • 147.93.211.0/24
  • 151.252.40.0/22
  • 151.252.44.0/23
  • 151.252.46.0/23
  • 176.74.56.0/22
  • 176.74.60.0/23
  • 176.74.62.0/24
  • 176.74.63.0/24
  • 185.46.136.0/22
  • 185.54.232.0/22
  • 185.56.104.0/23
  • 185.56.128.0/21
  • 185.245.101.0/24
  • 185.245.102.0/23
  • 195.192.128.0/20
  • 195.192.144.0/20
  • 195.192.160.0/19

IPv6 prefixes

All 44 prefixes.

  • 2a00:13c8::/41
  • 2a00:13c8:80::/42
  • 2a00:13c8:c0::/43
  • 2a00:13c8:e0::/44
  • 2a00:13c8:f0::/46
  • 2a00:13c8:f4::/47
  • 2a00:13c8:f6::/47
  • 2a00:13c8:f8::/45
  • 2a00:13c8:100::/40
  • 2a00:13c8:200::/39
  • 2a00:13c8:400::/38
  • 2a00:13c8:800::/37
  • 2a00:13c8:1000::/36
  • 2a00:13c8:2000::/35
  • 2a00:13c8:4000::/34
  • 2a00:13c8:8000::/33
  • 2a00:7fc0::/33
  • 2a04:d480::/37
  • 2a04:d480:800::/38
  • 2a04:d480:2400::/38
  • 2a04:d480:2c00::/38
  • 2a04:d480:4400::/47
  • 2a04:d480:4402::/48
  • 2a04:d480:4403::/48
  • 2a04:d480:4404::/46
  • 2a04:d480:4408::/45
  • 2a04:d480:4410::/44
  • 2a04:d480:4420::/43
  • 2a04:d480:4440::/42
  • 2a04:d480:4480::/41
  • 2a04:d480:4500::/40
  • 2a04:d480:4600::/39
  • 2a04:d480:4800::/48
  • 2a04:d480:4801::/48
  • 2a04:d480:4802::/48
  • 2a04:d480:4803::/48
  • 2a04:d480:4804::/46
  • 2a04:d480:4808::/45
  • 2a04:d480:4810::/44
  • 2a04:d480:4820::/43
  • 2a04:d480:4840::/42
  • 2a04:d480:4880::/41
  • 2a04:d480:4900::/40
  • 2a04:d480:4a00::/39

Similar-sized networks in Germany

ASNNameIPv4 addresses
AS29551#150 HGCOMP-ASN Aixit GmbH38,912
AS12440#151 AS12440 Hughes Network Systems GmbH37,888
AS31103#152 KEYWEB-AS Keyweb AG37,632
AS28748#154 ALPHACRON-AS Marc Pauls (AlphaCron Datensysteme)36,864
AS35366#155 ISPPRO-AS ISPpro Internet KG35,840
AS42730#156 EVANZOAS EVANZO e-commerce GmbH35,583

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