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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

AS17561 · 

curl -s "https://thenetworkery.com/api/v1/network-report?query=AS17561"
JSON Docs

Problem: AS17561 (LCS-AS-AP) announces 6077 IPv4 and 0 IPv6 prefixes. 1 problem · 3 warnings

AS pageAS17561
HolderLCS-AS-AP - LARUS Limited
AllocationAPNIC, Hong Kong SAR China (HK), allocated 2024-06-06
Prefixes (IPv4 / IPv6)6077 / 0
RPKI valid97% (5920 / 6077)
Upstreams and peers8
Peering policyOpen

What to fix

  1. Problem

    10 of 6077 announced prefixes are RPKI invalid: 45.196.100.0/24, 45.196.110.0/24, 45.197.32.0/24, 45.197.33.0/24, 45.197.34.0/24 (+5).

    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

    62 of 6077 announced prefixes have no IRR route object: 179.77.243.0/24, 156.227.7.0/24, 45.204.252.0/24, 154.91.138.0/24, 156.227.135.0/24 (+57).

    Many networks build their prefix filters from IRR data; without route objects some of them drop the routes.

    Fix: Create route (IPv4) and route6 (IPv6) objects with origin AS17561 in your RIR’s IRR database (or RADB).

    route: 179.77.243.0/24
origin: AS17561

route: 156.227.7.0/24
origin: AS17561

route: 45.204.252.0/24
origin: AS17561

    Open in ASN & BGP prefix lookup

  4. Warning

    No public NOC, policy or technical contact.

    Other networks use these addresses to set up peering and to reach you during an incident.

    Fix: Add a role contact (for example noc@ or peering@ an address you monitor) with visibility Public.

    Open in PeeringDB lookup

Checks

Routing and RPKI 10 of 6077 announced prefixes are RPKI invalid: 45.196.100.0/24, 45.196.110.0/24, 45.197.32.0/24, 45.197.33.0/24, 45.197.34.0/24 (+5).
  • Pass: AS17561 announces 6077 IPv4 and 0 IPv6 prefixes.
  • Warning: No IPv6 prefixes announced.
  • Problem: 10 of 6077 announced prefixes are RPKI invalid: 45.196.100.0/24, 45.196.110.0/24, 45.197.32.0/24, 45.197.33.0/24, 45.197.34.0/24 (+5).
  • Info: 5920 of 6077 announced prefixes are RPKI valid.
  • Info: The RPKI state of 147 prefixes was not looked up (no ROA of AS17561 covers them; only the first 10 are checked).
  • Warning: 62 of 6077 announced prefixes have no IRR route object: 179.77.243.0/24, 156.227.7.0/24, 45.204.252.0/24, 154.91.138.0/24, 156.227.135.0/24 (+57).
  • Info: 8 upstreams and peers, 0 downstream networks seen.
HolderLCS-AS-AP - LARUS Limited
IPv4 prefixes6077
IPv6 prefixes0
RPKI5920 valid · 10 invalid · 147 not looked up
Without IRR route object62
Downstream networks0
Routes to fix
PrefixRPKI
45.196.100.0/24 RPKI invalid
45.196.110.0/24 RPKI invalid
45.197.32.0/24 RPKI invalid
45.197.33.0/24 RPKI invalid
45.197.34.0/24 RPKI invalid
45.197.35.0/24 RPKI invalid
45.197.36.0/24 RPKI invalid
45.197.37.0/24 RPKI invalid
45.197.38.0/24 RPKI invalid
45.197.39.0/24 RPKI invalid

Upstreams and peers seen to the left 8

AS17497 Liasail AS41095 IPTP Networks AS51601 Ай-пи-ти-пи AS61461 Airtek Solutions AS263681 IPTP NETWORKS S.A.C. AS265038 TELFO BRASIL AS984 OWS AS328608 Africa on Cloud

Announced prefixes 6077

45.192.2.0/24 45.192.19.0/24 45.192.245.0/24 45.195.242.0/24 45.196.0.0/24 45.196.1.0/24 45.196.2.0/24 45.196.3.0/24 45.196.4.0/24 45.196.5.0/24 45.196.6.0/24 45.196.7.0/24 45.196.8.0/24 45.196.9.0/24 45.196.10.0/24 45.196.11.0/24 45.196.12.0/24 45.196.13.0/24 45.196.14.0/24 45.196.15.0/24 45.196.32.0/24 45.196.33.0/24 45.196.34.0/24 45.196.35.0/24 45.196.36.0/24 45.196.37.0/24 45.196.38.0/24 45.196.39.0/24 45.196.40.0/24 45.196.41.0/24 45.196.42.0/24 45.196.43.0/24 45.196.44.0/24 45.196.45.0/24 45.196.46.0/24 45.196.47.0/24 45.196.48.0/24 45.196.49.0/24 45.196.50.0/24 45.196.51.0/24 45.196.52.0/24 45.196.53.0/24 45.196.54.0/24 45.196.55.0/24 45.196.80.0/24 45.196.81.0/24 45.196.82.0/24 45.196.83.0/24 45.196.84.0/24 45.196.85.0/24 45.196.86.0/24 45.196.87.0/24 45.196.88.0/24 45.196.89.0/24 45.196.100.0/24 45.196.101.0/24 45.196.102.0/24 45.196.103.0/24 45.196.105.0/24 45.196.109.0/24 45.196.110.0/24 45.196.111.0/24 45.196.113.0/24 45.196.114.0/24 45.196.115.0/24 45.196.134.0/24 45.196.135.0/24 45.196.154.0/24 45.196.155.0/24 45.196.166.0/24 45.196.167.0/24 45.196.171.0/24 45.196.178.0/24 45.196.179.0/24 45.196.180.0/24 45.196.181.0/24 45.196.182.0/24 45.196.192.0/24 45.196.193.0/24 45.196.197.0/24 45.196.202.0/24 45.196.203.0/24 45.196.204.0/24 45.196.205.0/24 45.196.209.0/24 45.196.210.0/24 45.196.211.0/24 45.196.212.0/24 45.196.213.0/24 45.196.214.0/24 45.196.230.0/24 45.196.231.0/24 45.196.242.0/24 45.196.243.0/24 45.196.248.0/24 45.196.249.0/24 45.197.9.0/24 45.197.22.0/24 45.197.23.0/24 45.197.26.0/24

Showing the first 100.

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

Open in ASN & BGP prefix lookup
Registration Found at rdap.apnic.net.
  • Pass: Found at rdap.apnic.net.
NameLCS-AS-AP
HandleAS17561
RangeAS17561
CountryHK
Statusactive
Registered2024-06-06T05:22:54Z
Last changed2024-06-06T05:23:07Z
Abuse contactt.t.xu@larus.net
Allocation
Registry (RIR)APNIC
CountryHong Kong SAR China (HK)
Delegated on2024-06-06
StatusAllocated
Delegated rangeAS17561

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

Contacts
RoleNameEmail
abuse IRT-LCS-HK t.t.xu@larus.net
registrant Larus Limited p.lam@laruscloudservice.net
administrative, technical LARUS administrator info@larus.net

Source: https://rdap.apnic.net/autnum/17561. Registration data from rdap.apnic.net, shown under its terms of use (terms): not for marketing or bulk collection.

Open in WHOIS / RDAP lookup
PeeringDB No public NOC, policy or technical contact.
  • Pass: AS17561 is in PeeringDB as LARUS Limited.
  • Info: Peering policy: Open.
  • Info: Present at 2 internet exchanges with 2 ports (110G in total).
  • Warning: No public NOC, policy or technical contact.
NetworkLARUS Limited
AS numberAS17561
Type, Global
Websitehttps://larus.net/
IRR as-setAS-LARUS
Prefixes (IPv4 / IPv6)10000 / 100
Peering policyOpen
LocationsNot Required
Ratio requiredNo
ContractsPrivate Only
Last updated2026-10-15

Source: PeeringDB. Results are cached for an hour.

Open in PeeringDB lookup