81.91.91.21

  • Reverse DNS confirmed
  • Not on blocklists
Network
WEB4U-NET-CUST-91
Description
WEB4U - customers
Held by
MNT-WEB4U
Range
81.91.91.0 - 81.91.91.255
CIDR
81.91.91.0/24
Type
ASSIGNED PA
Country
CZ
Registered on
Last updated
Status
  • active
Report abuse to
abuse@web4u.cz
Checked

Contacts

  • Holder

    MNT-WEB4U

  • Administrative and technical

    WEB4U network operations WM3536-RIPE

    CZECH REPUBLIC
    Praha 3
    13000
    Mahlerovy sady 1

    abuse@web4u.cz

    +420270001456

  • Abuse

    Web4U abuse AR68991-RIPE

    CZECH REPUBLIC
    Praha 3
    13000
    Mahlerovy sady 1

    abuse@web4u.cz

Reverse DNS

Names
Forward check
Confirmedd358.server4u.cz resolves to 81.91.91.21

Network

Announced by
AS39790 Web4U s.r.o.
Route
81.91.88.0/21, carried by 2,602 of bgp.tools' BGP feeds
Country
CZ
Tagged
Validating RPKI ROV

Upstreams and peers

  • AS199803 ComSource s.r.o.459 paths
  • AS6939 Hurricane Electric LLC243 paths
  • AS25248 RADIOKOMUNIKACE a.s.197 paths
  • AS22356 Durand do Brasil Ltda7 paths
  • AS8218 Zayo Europe5 paths
  • AS4455 IX Reach Ltd2 paths
  • AS14840 BR.DIGITAL2 paths
  • AS1764 Next Layer Telecommunications1 path
  • AS6204 INTERKVM HOST SRL1 path
  • AS6663 Türk Telekom International1 path
  • AS47200 NIX.CZ Route Servers1 path
  • AS263444 Open X Tecnologia Ltda1 path

Downstreams

  • None seen

From RIPEstat

Routes AS39790 announces

5 IPv4 prefixes covering 5,120 addresses, and 3 IPv6 prefixes

From bgp.tools

Location

Map © OpenStreetMap contributors
Location
Czechia
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