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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

AS6735 · 

curl -s "https://thenetworkery.com/api/v1/network-report?query=AS6735"
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Warning: AS6735 (SDTNET) announces 4 IPv4 and 0 IPv6 prefixes. 2 warnings

AS pageAS6735
HolderSDTNET TNG Stadtnetz GmbH
AllocationRIPE NCC, Germany (DE), allocated 1996-08-02
Prefixes (IPv4 / IPv6)4 / 0
RPKI valid100% (4 / 4)
Upstreams and peers4
Peering policyOpen

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

    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: AS6735 announces 4 IPv4 and 0 IPv6 prefixes.
  • Warning: No IPv6 prefixes announced.
  • Pass: All 4 announced prefixes are RPKI valid.
  • Pass: Every announced prefix has an IRR route object.
  • Info: 4 upstreams and peers, 1 downstream networks seen.
HolderSDTNET TNG Stadtnetz GmbH
IPv4 prefixes4
IPv6 prefixes0
RPKI4 valid
Downstream networks1

Upstreams and peers seen to the left 4

AS13101 TNG Stadtnetz GmbH AS5405 Inter.link AS33891 Core-Backbone AS47147 ANX

Announced prefixes 4

62.68.0.0/19 194.88.160.0/19 194.113.117.0/24 195.245.0.0/18

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

Open in ASN & BGP prefix lookup
Registration The registry is limiting how often it can be asked. Please try again in a minute.
Open in WHOIS / RDAP lookup
PeeringDB No public NOC, policy or technical contact.
  • Pass: AS6735 is in PeeringDB as TNG Stadtnetz GmbH (ex sdt.net).
  • Info: Peering policy: Open.
  • Info: Present at 2 internet exchanges with 2 ports (10.1G in total).
  • Warning: No public NOC, policy or technical contact.
NetworkTNG Stadtnetz GmbH (ex sdt.net) (TNG)
AS numberAS6735
TypeCable/DSL/ISP, Europe
Websitehttp://www.sdt.net
IRR as-setRIPE::AS-SDT
Prefixes (IPv4 / IPv6)80 / 15
Traffic50-100Gbps, Mostly Inbound
Peering policyOpen
LocationsNot Required
Ratio requiredNo
ContractsNot Required
Last updated2025-10-20
Contacts
Abuseabuse@sdt.net

Source: PeeringDB. Results are cached for an hour.

Open in PeeringDB lookup