Skip to content
thenetworkery

Network report

Who holds an IP address, prefix or AS number, how it is routed (origin AS, RPKI, IRR), its reverse DNS, blocklist listings and PeeringDB record, with what to fix first.

IP address, prefix or AS number

AS31368 · 

curl -s "https://thenetworkery.com/api/v1/network-report?query=AS31368"
JSON Docs

Problem: AS31368 (PROMOCOM-NET) announces 5 IPv4 and 0 IPv6 prefixes. 1 problem · 2 warnings

AS pageAS31368
HolderPROMOCOM-NET ASTELNET s.r.o.
AllocationRIPE NCC, Czechia (CZ), allocated 2004-04-27
Prefixes (IPv4 / IPv6)5 / 0
RPKI valid80% (4 / 5)
Upstreams and peers1

What to fix

  1. Problem

    1 of 5 announced prefixes are RPKI invalid: 185.173.157.0/24.

    A ROA covers them but does not allow this origin or prefix length, so networks that filter (most large ones do) drop these routes.

    Fix: Fix the ROAs (origin AS and max length) at your RIR, or stop announcing the routes.

    Open in RPKI / ROA validator Guide

  2. Warning

    No IPv6 prefixes announced.

    Networks without IPv6 force their users through NAT64 or leave them unreachable from IPv6-only networks.

    Fix: Get an IPv6 allocation from your RIR (usually free with your IPv4 membership) and announce it.

    Open in ASN & BGP prefix lookup

  3. Warning

    PeeringDB did not answer: HTTP 404

    Fix: Try again in a minute.

    Open in PeeringDB lookup

Checks

Routing and RPKI 1 of 5 announced prefixes are RPKI invalid: 185.173.157.0/24.
  • Pass: AS31368 announces 5 IPv4 and 0 IPv6 prefixes.
  • Warning: No IPv6 prefixes announced.
  • Problem: 1 of 5 announced prefixes are RPKI invalid: 185.173.157.0/24.
  • Info: 4 of 5 announced prefixes are RPKI valid.
  • Pass: Every announced prefix has an IRR route object.
  • Info: One upstream or peer seen (AS28917): an outage there takes the whole network off the internet.
HolderPROMOCOM-NET ASTELNET s.r.o.
IPv4 prefixes5
IPv6 prefixes0
RPKI4 valid · 1 invalid
Downstream networks0
Routes to fix
PrefixRPKI
185.173.157.0/24 RPKI invalid

Upstreams and peers seen to the left 1

AS28917 FIORD

Announced prefixes 5

89.107.128.0/24 185.173.156.0/24 185.173.157.0/24 185.173.158.0/24 185.173.159.0/24

Source: RIPEstat (RIPE NCC RIS, Routinator, IRR); AS names: Team Cymru

Open in ASN & BGP prefix lookup
Registration Found at rdap.db.ripe.net.
  • Pass: Found at rdap.db.ripe.net.
NamePROMOCOM-NET
HandleAS31368
RangeAS31368
Statusactive
Registered2004-04-27T07:48:05Z
Last changed2026-09-07T12:08:34Z
Abuse contactnoc@astelnet.com
Allocation
Registry (RIR)RIPE NCC
CountryCzechia (CZ)
Delegated on2004-04-27
StatusAllocated
Delegated rangeAS31368

Source: RIR delegation data, updated daily. The country is where the range was registered, not necessarily where it is used.

Contacts
RoleNameEmail
registrant MNT-ASTELNET
registrant ASTELNET s.r.o.
registrant RIPE-NCC-END-MNT
abuse Abuse-C Role noc@astelnet.com

Source: https://rdap.db.ripe.net/autnum/31368. Registration data from rdap.db.ripe.net, shown under its terms of use (terms): not for marketing or bulk collection. Personal contacts in this registry are not shown.

Open in WHOIS / RDAP lookup
PeeringDB PeeringDB did not answer: HTTP 404
  • Warning: PeeringDB did not answer: HTTP 404

Source: PeeringDB. Results are cached for an hour.

Open in PeeringDB lookup