143.121.0.0

  • No reverse DNS
  • Not on blocklists
Network
UMCU
Description
Universitair Medisch Centrum Utrecht
Held by
SN-LIR-MNT
Range
143.121.0.0 - 143.121.255.255
CIDR
143.121.0.0/16
Type
LEGACY
Country
NL
Registered on
Last updated
Status
  • active
Checked

Contacts

  • Abuse

    IRT-SURFcert irt-SURFcert

    SURF bv
    attn. SURFcert
    P.O.Box 19035
    NL-3501 DA
    Utrecht
    Netherlands

    +31 88 7873000

  • Holder

    SN-LIR-MNT

  • Administrative and technical

    UMCU Netwerk & Security UNS5-RIPE

    Universitair Medisch Centrum Utrecht

    +31(0)88 75 50700

Reverse DNS

Names
None

Network

Announced by
AS1103 SURF B.V.
Route
143.121.0.0/16, carried by 3,053 of bgp.tools' BGP feeds
Country
NL
Tagged
Tor services, Academic, Tranco 10k Host

Upstreams and peers

  • AS3257 GTT Communications Inc.44,361 paths
  • AS6939 Hurricane Electric LLC20,302 paths
  • AS6830 Liberty Global Europe Holding B.V.16,785 paths
  • AS20562 Open Peering (Broadband Hosting B.V.)8,928 paths
  • AS2914 NTT America, Inc.6,177 paths
  • AS20965 GEANT Vereniging5,083 paths
  • AS9002 RETN Limited4,797 paths
  • AS7195 EdgeUno4,138 paths
  • AS24785 Joint Transit (Broadband Hosting B.V.)3,242 paths
  • AS37468 Angola Cables2,196 paths
  • AS22356 Durand do Brasil Ltda1,982 paths
  • AS1031 PEER 1031 LLC1,822 paths

And 48 more

Downstreams

  • AS3257 GTT Communications Inc.2,363 paths
  • AS7195 EdgeUno1,053 paths
  • AS4230 Claro (Embratel)806 paths
  • AS9498 Bharti Airtel Ltd.798 paths
  • AS11537 Internet2680 paths
  • AS1031 PEER 1031 LLC603 paths
  • AS20562 Open Peering (Broadband Hosting B.V.)602 paths
  • AS1101 SURF (Thunderlab)388 paths
  • AS4800 PT Aplikanusa Lintasarta372 paths
  • AS271253 LINK BRASIL TELECOMUNICACOES LTDA372 paths
  • AS1152 SURF B.V.371 paths
  • AS1102 SURF B.V.369 paths

And 459 more

From RIPEstat

Routes AS1103 announces

99 IPv4 prefixes covering 7,200,000 addresses, and 4 IPv6 prefixes

From bgp.tools

Location

Map © OpenStreetMap contributors
Location
The Netherlands
Accuracy
Within 100 km

Location from GeoLite2 data created by MaxMind

Blocklists

  • Spamhaus ZEN Not listed
  • SpamCop Not listed
  • Mailspike Not listed
  • PSBL Not listed