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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

185.231.16.0/24 · 

curl -s "https://thenetworkery.com/api/v1/network-report?query=185.231.16.0%2F24"
JSON Docs

Pass: 185.231.16.0/24 is announced by AS39563 (UCSYSTEMS). Nothing to fix.

Announced as185.231.16.0/24
Origin ASAS39563 UCSYSTEMS
HolderUCSYSTEMS-MNT
AllocationRIPE NCC, Netherlands (NL), allocated 2017-11-09
Size256 addresses
Abuse contactabuse@ucsystems.nl

Checks

Routing and RPKI Announced as 185.231.16.0/24 by AS39563.
  • Pass: Announced as 185.231.16.0/24 by AS39563.
  • Pass: 185.231.16.0/24 from AS39563 is RPKI valid.
  • Pass: Seen by 100% of RIPE RIS peers.
Route185.231.16.0/24
Origin ASAS39563 UCSYSTEMS CTA Systems B.V. RPKI valid
IRR route objectsRIPE
Visibility (RIS peers)319 / 319
First seen2019-07-16
ROAs covering this prefix
ROA prefixMax lengthOrigin AS
185.231.16.0/24 /24 AS39563

Source: RIPEstat (RIPE NCC RIS, Routinator)

Open in ASN & BGP prefix lookup
Reverse DNS Reverse DNS is delegated (16.231.185.in-addr.arpa).
  • Pass: Reverse DNS is delegated (16.231.185.in-addr.arpa).
Reverse zones 1
ZoneNameservers
16.231.185.in-addr.arpa ns1-07.azure-dns.com, ns2-07.azure-dns.net, ns3-07.azure-dns.org, ns4-07.azure-dns.info
Open in DNS lookup
Registration Found at rdap.db.ripe.net.
  • Pass: Found at rdap.db.ripe.net.
NameNL-UCSYSTEMS-20171109-1
Handle185.231.16.0 - 185.231.16.255
Range185.231.16.0 – 185.231.16.255
CountryNL
Statusactive
Registered2019-07-16T20:13:11Z
Last changed2021-06-03T19:13:53Z
Abuse contactabuse@ucsystems.nl
Allocation
Registry (RIR)RIPE NCC
CountryNetherlands (NL)
Delegated on2017-11-09
StatusAllocated
Delegated range185.231.16.0/22 (185.231.16.0 – 185.231.19.255)

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

Contacts
RoleNameEmail
registrant UCSYSTEMS-MNT
abuse Abuse-C Role abuse@ucsystems.nl

Source: https://rdap.db.ripe.net/ip/185.231.16.0/24. 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 AS39563 is in PeeringDB as UC Systems.
  • Pass: AS39563 is in PeeringDB as UC Systems.
  • Info: Peering policy: Open.
  • Info: Present at 12 internet exchanges with 14 ports (140G in total).

About the network that announces this space, so not in the fix list.

NetworkUC Systems (CTA Systems B.V.)
AS numberAS39563
TypeNSP, Regional
Websitehttps://ucsystems.nl
IRR as-setAS-UCSYSTEMS
Prefixes (IPv4 / IPv6)30 / 10
Traffic1-5Gbps, Mostly Inbound
Peering policyOpen
LocationsNot Required
Ratio requiredNo
ContractsNot Required
Last updated2026-10-30
Contacts
Abuseabuse@ucsystems.nl
NOCservice@ucsystems.nl
Policypeering@ucsystems.nl

Source: PeeringDB. Results are cached for an hour.

Open in PeeringDB lookup