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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

AS36976 · 

curl -s "https://thenetworkery.com/api/v1/network-report?query=AS36976"
JSON Docs

Warning: AS36976 (Sonangol) announces 5 IPv4 and 0 IPv6 prefixes. 5 warnings

AS pageAS36976
HolderSonangol - Sonangol
AllocationAFRINIC, Angola (AO), allocated 2007-09-18
Prefixes (IPv4 / IPv6)5 / 0
RPKI valid100% (5 / 5)
Upstreams and peers3

What to fix

  1. 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

  2. Warning

    3 of 5 announced prefixes have no IRR route object: 41.223.167.0/24, 41.223.166.0/24, 41.223.164.0/22.

    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 AS36976 in your RIR’s IRR database (or RADB).

    route: 41.223.167.0/24
origin: AS36976

route: 41.223.166.0/24
origin: AS36976

route: 41.223.164.0/22
origin: AS36976

    Open in ASN & BGP prefix lookup

  3. Warning

    No abuse contact is published for AS36976.

    Other networks send reports of spam, attacks and hacked machines to the abuse contact. Without one, reports go nowhere and blocklists may list the whole range.

    Fix: Add an abuse contact to the registration: abuse-c in the RIPE database, an Abuse POC at ARIN, an abuse mailbox (IRT) at APNIC, AFRINIC or LACNIC.

    Open in WHOIS / RDAP 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 No IPv6 prefixes announced.
  • Pass: AS36976 announces 5 IPv4 and 0 IPv6 prefixes.
  • Warning: No IPv6 prefixes announced.
  • Pass: All 5 announced prefixes are RPKI valid.
  • Warning: 3 of 5 announced prefixes have no IRR route object: 41.223.167.0/24, 41.223.166.0/24, 41.223.164.0/22.
  • Info: 3 upstreams and peers, 0 downstream networks seen.
HolderSonangol - Sonangol
IPv4 prefixes5
IPv6 prefixes0
RPKI5 valid
Without IRR route object3
Downstream networks0

Upstreams and peers seen to the left 3

AS11259 Angola Telecom AS37119 Unitel SA AS17400 MSTELCOM, SARL

Announced prefixes 5

41.223.164.0/22 41.223.164.0/24 41.223.165.0/24 41.223.166.0/24 41.223.167.0/24

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

Open in ASN & BGP prefix lookup
Registration No abuse contact is published for AS36976.
  • Pass: Found at rdap.afrinic.net.
  • Warning: No abuse contact is published for AS36976.
NameORG-SA61-AFRINIC
HandleAS36976
RangeAS36976
Statusactive
Registered2007-09-18T12:10:00Z
Last changed2025-08-06T06:45:00Z
Allocation
Registry (RIR)AFRINIC
CountryAngola (AO)
Delegated on2007-09-18
StatusAllocated
Delegated rangeAS36976

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

Contacts
RoleNameEmail
administrative, technical Claudio Fontes claudio.fontes@sonangol.co.ao
technical Idalecio Carvalho idalecio.carvalho@sonangol.co.ao
technical Domingos Varela domingos.varela@sonangol.co.ao
registrant Sonangol hostmaster@sonangol.co.ao
administrative, technical Claudio Antonio claudio.antonio@sonangol.co.ao
technical Braulio Afonso Mateus da Silva braulio.silva@sonangol.co.ao

Source: https://rdap.afrinic.net/rdap/autnum/36976. Registration data from rdap.afrinic.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: AS36976 is in PeeringDB as Sonangol.
  • 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.
NetworkSonangol
AS numberAS36976
Type, Not Disclosed
TrafficNot Disclosed
Ratio requiredNo
Last updated2022-07-27

Source: PeeringDB. Results are cached for an hour.

Open in PeeringDB lookup