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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

AS3758 · 

curl -s "https://thenetworkery.com/api/v1/network-report?query=AS3758"
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Problem: AS3758 (SINGNET) announces 445 IPv4 and 29 IPv6 prefixes. 1 problem · 4 warnings

AS pageAS3758
HolderSINGNET - SingNet
AllocationAPNIC, Singapore (SG), allocated 2002-08-01
Prefixes (IPv4 / IPv6)445 / 29
RPKI valid97% (459 / 474)
Upstreams and peers6
Peering policyOpen

What to fix

  1. Problem

    1 of 474 announced prefixes are RPKI invalid: 2400:d802:4280::/42.

    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

    10 of 474 announced prefixes have no ROA (RPKI not found): 91.103.9.0/24, 103.186.249.0/24, 117.58.175.0/24, 132.244.212.0/22, 159.172.245.0/24 (+5).

    Without a ROA, networks cannot tell your routes from a hijack.

    Fix: Create a ROA for each at your RIR portal, with origin AS3758 and a max length equal to the prefix length:

    91.103.9.0/24 AS3758 max-length /24
103.186.249.0/24 AS3758 max-length /24
117.58.175.0/24 AS3758 max-length /24
132.244.212.0/22 AS3758 max-length /22
159.172.245.0/24 AS3758 max-length /24
160.96.64.0/24 AS3758 max-length /24
160.96.65.0/24 AS3758 max-length /24
160.96.217.0/24 AS3758 max-length /24
161.229.250.0/24 AS3758 max-length /24
192.26.233.0/24 AS3758 max-length /24

    Open in RPKI / ROA validator Guide

  3. Warning

    11 of 474 announced prefixes have no IRR route object: 2404:5800::/32, 192.232.67.0/24, 117.58.175.0/24, 132.244.212.0/22, 160.96.65.0/24 (+6).

    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 AS3758 in your RIR’s IRR database (or RADB).

    route6: 2404:5800::/32
origin: AS3758

route: 192.232.67.0/24
origin: AS3758

route: 117.58.175.0/24
origin: AS3758

    Open in ASN & BGP prefix lookup

  4. Warning

    No IRR as-set is listed.

    Peers and route servers build prefix filters from the as-set. Without one they fall back to the AS number alone, which breaks as soon as you have customers.

    Fix: Create an as-set in your RIR’s IRR database and add it to your PeeringDB record.

    Open in PeeringDB lookup

  5. 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 1 of 474 announced prefixes are RPKI invalid: 2400:d802:4280::/42.
  • Pass: AS3758 announces 445 IPv4 and 29 IPv6 prefixes.
  • Problem: 1 of 474 announced prefixes are RPKI invalid: 2400:d802:4280::/42.
  • Warning: 10 of 474 announced prefixes have no ROA (RPKI not found): 91.103.9.0/24, 103.186.249.0/24, 117.58.175.0/24, 132.244.212.0/22, 159.172.245.0/24 (+5).
  • Info: 459 of 474 announced prefixes are RPKI valid.
  • Info: The RPKI state of 4 prefixes was not looked up (no ROA of AS3758 covers them; only the first 10 are checked).
  • Warning: 11 of 474 announced prefixes have no IRR route object: 2404:5800::/32, 192.232.67.0/24, 117.58.175.0/24, 132.244.212.0/22, 160.96.65.0/24 (+6).
  • Info: 6 upstreams and peers, 90 downstream networks seen.
HolderSINGNET - SingNet
IPv4 prefixes445
IPv6 prefixes29
RPKI459 valid · 1 invalid · 10 not found · 4 not looked up
Without IRR route object11
Downstream networks90
Routes to fix
PrefixRPKI
2400:d802:4280::/42 RPKI invalid
91.103.9.0/24 No ROA
103.186.249.0/24 No ROA
117.58.175.0/24 No ROA
132.244.212.0/22 No ROA
159.172.245.0/24 No ROA
160.96.64.0/24 No ROA
160.96.65.0/24 No ROA
160.96.217.0/24 No ROA
161.229.250.0/24 No ROA
192.26.233.0/24 No ROA

Upstreams and peers seen to the left 6

AS7473 Singapore Telecommunications Limited AS1299 Arelion (Twelve99) AS6453 TATA Communications Ltd AS4657 StarHub AS4657 AS4637 Telstra (International) AS3491 PCCW Global

Announced prefixes 474

2.56.56.0/22 31.210.22.0/23 37.0.10.0/23 42.60.138.0/23 42.60.202.0/23 42.60.228.0/23 42.60.248.0/23 42.61.0.0/16 42.61.5.0/24 42.61.10.0/24 42.61.15.0/24 42.61.22.0/24 42.61.25.0/24 42.61.31.0/24 42.61.46.0/24 42.61.51.0/24 42.61.60.0/24 42.61.65.0/24 42.61.71.0/24 42.61.93.0/24 42.61.94.0/24 42.61.104.0/24 42.61.123.0/24 42.61.129.0/24 42.61.130.0/23 42.61.132.0/22 42.61.136.0/21 42.61.160.0/21 42.61.168.0/23 42.61.170.0/23 42.61.172.0/23 42.61.174.0/23 42.61.176.0/23 42.61.178.0/23 42.61.180.0/23 42.61.182.0/23 42.61.184.0/22 42.61.188.0/22 42.61.192.0/20 42.61.208.0/22 42.61.212.0/22 42.61.216.0/21 42.61.224.0/23 42.61.226.0/23 42.61.228.0/23 42.61.230.0/23 42.61.232.0/23 42.61.234.0/23 42.61.236.0/23 42.61.238.0/23 42.61.240.0/22 42.61.244.0/23 42.61.246.0/23 42.61.248.0/22 42.61.252.0/22 45.86.188.0/23 45.135.4.0/22 45.144.198.0/23 58.185.0.0/16 58.185.5.0/24 58.185.15.0/24 58.185.21.0/24 58.185.63.0/24 58.185.82.0/24 58.185.83.0/24 58.185.93.0/24 58.185.163.0/24 58.185.164.0/24 58.185.178.0/24 58.185.183.0/24 58.185.190.0/24 58.185.201.0/24 58.185.207.0/24 58.185.211.0/24 58.185.212.0/24 58.185.219.0/24 58.185.220.0/24 58.185.222.0/24 58.185.223.0/24 58.185.236.0/24 58.185.237.0/24 58.185.240.0/24 58.185.248.0/24 58.185.251.0/24 80.94.89.0/24 85.202.168.0/22 85.203.24.0/24 85.203.35.0/24 91.103.9.0/24 91.217.236.0/24 101.78.127.0/24 103.186.249.0/24 111.65.100.0/24 111.65.102.0/23 111.65.104.0/21 111.65.108.0/22 111.65.112.0/20 115.42.128.0/17 115.42.181.0/24 115.42.185.0/24

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.arin.net.
  • Pass: Found at rdap.arin.net.
NameSINGNET
HandleAS3758
RangeAS3758
CountrySG
Statusactive
Registered2008-09-04T06:40:33Z
Last changed2020-05-16T06:40:34Z
Abuse contacthostmaster@singnet.com.sg
Allocation
Registry (RIR)APNIC
CountrySingapore (SG)
Delegated on2002-08-01
StatusAllocated
Delegated rangeAS3758

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

Contacts
RoleNameEmail
registrant SingNet Pte Ltd hostmaster@singnet.com.sg
abuse IRT-SINGNET-SG hostmaster@singnet.com.sg
technical, administrative Owner of Domains hostmaster@SINGNET.COM.SG

Source: https://rdap.arin.net/registry/autnum/3758. Registration data from rdap.arin.net, shown under its terms of use (terms): not for marketing or bulk collection.

Open in WHOIS / RDAP lookup
PeeringDB No IRR as-set is listed.
  • Pass: AS3758 is in PeeringDB as SingNet.
  • Info: Peering policy: Open.
  • Info: No internet exchange ports are listed.
  • Warning: No IRR as-set is listed.
  • Warning: No public NOC, policy or technical contact.
  • Info: The record was last updated 2022-07-27.
NetworkSingNet
AS numberAS3758
Type, Not Disclosed
Prefixes (IPv4 / IPv6)0 / 0
TrafficNot Disclosed
Peering policyOpen
LocationsNot Required
Ratio requiredNo
ContractsNot Required
Last updated2022-07-27

Source: PeeringDB. Results are cached for an hour.

Open in PeeringDB lookup