HomeASN LookupAS553

AS553 BELWUE Universitaet Stuttgart

🇩🇪

Org handle: ORG-BA9-RIPE

BelWue-Koordination

RIPE NCCallocatedASPA Published
Announced Prefixes (BGP)
100total
96 IPv44 IPv6
IPv4 Addresses
Allocated (RIR)2.3M
Announced (BGP)2.3M
IPv6 Addresses
Allocated (RIR)1.9×10³⁰
Announced (BGP)1.9×10³⁰
Prefix Limit (IPv4)
5,000
Prefix Limit (IPv6)
20
Country
🇩🇪 DE
RIR
RIPE NCC
Status
allocated
Allocated
1993-09-01

Routing hygiene

Score 6/100 · Low risk
RPKI ROA coverage
100%
no RPKI invalid prefixes
IRR route objects
100%
no origin mismatches
Hijack signals
0
0 announced against others' ROAs, 0 own announced by others
Upstreams
5
diversity 40/100
  • All announced prefixes have a valid ROA and a matching IRR route object

Based on 100 announced prefixes, updated daily (2026-10-25). How the score works · RPKI explained

Announced Prefixes

(BGP)100
|
Prefix
RPKI
IRR
Last Seen
45.90.132.0/22
 Valid
RIPE
2026-10-26
129.69.0.0/16
 Valid
RIPE
2026-10-26
129.143.0.0/16
 Valid
RIPE
2026-10-26
129.206.0.0/16
 Valid
RIPE
2026-10-26
132.230.0.0/16
 Valid
RIPE
2026-10-26
134.2.0.0/16
 Valid
RIPE
2026-10-26
134.34.0.0/16
 Valid
RIPE
2026-10-26
134.60.0.0/16
 Valid
RIPE
2026-10-26
134.103.0.0/16
 Valid
RIPE
2026-10-26
134.108.0.0/16
 Valid
RIPE
2026-10-26
1-10 of 100
1 / 10

Allocated Prefixes

(RIR)91
Prefix
Country
RIR
Status
45.90.132.0/22🇩🇪 DERIPENCCallocated
129.69.0.0/16🇩🇪 DERIPENCCassigned
129.143.0.0/16🇩🇪 DERIPENCCassigned
129.206.0.0/16🇩🇪 DERIPENCCassigned
132.230.0.0/16🇩🇪 DERIPENCCassigned
134.2.0.0/16🇩🇪 DERIPENCCassigned
134.34.0.0/16🇩🇪 DERIPENCCassigned
134.60.0.0/16🇩🇪 DERIPENCCassigned
134.103.0.0/16🇩🇪 DERIPENCCassigned
134.108.0.0/16🇩🇪 DERIPENCCassigned
1-10 of 91
1 / 10

All 100 announced prefixes of AS553 →

Upstream Providers(5)

ASNName
AS559🇨🇭Switch SWITCH
AS680🇩🇪DFN Verein zur Foerderung eines Deutschen Forschungsnetzes e.V.
AS1299🇸🇪TWELVE99 Arelion Sweden AB
AS2914🇺🇸NTT-DATA-2914 - NTT America, Inc.
AS3320🇩🇪DTAG Deutsche Telekom AG

Downstream Customers(12)

ASNName
AS559🇨🇭Switch SWITCH
AS13020🇩🇪CCCV-AS Chaos Computer Club Veranstaltungsgesellschaft mbH
AS25538🇩🇪IN-ULM Internet Ulm/Neu-Ulm e.V.
AS34878🇩🇪KIT Karlsruhe Institute of Technology
AS202113🇩🇪PLANB plan b. solutions GmbH
AS204310🇩🇪SYNERGIES Synergies GmbH
AS204680🇩🇪KIT-STUDENT Karlsruhe Institute of Technology
AS208854🇩🇪Entropia Entropia e.V.
AS212522🇩🇪SIX-AS ISP Service eG
AS213068🇩🇪KIT-ANYCAST Karlsruhe Institute of Technology
AS215185🇩🇪ENTROPIA-EVENT Entropia e.V.
AS219090🇩🇪FIBERGARDEN Temporaerhaus e.V.

BGP Neighbours

(seen in AS paths)

Upstreams (5)

Networks AS553 hands its own prefixes to: transit providers, or peers at an exchange.

  • AS680DFN Verein Zur Foerderung Eines Deutschen Forschungsnetzes E.V76
  • AS1299TWELVE99 Arelion Sweden AB13
  • AS2914NTT America7
  • AS33891CORE BACKBONE Core Backbone3
  • AS6939Hurricane Electric1

Downstreams (15)

Networks whose own prefixes AS553 passes on: usually its customers.

  • AS57154SWKN Stadtwerke Konstanz10
  • AS5501Fraunhofer Cluster BW Fraunhofer Gesellschaft Zur Foerderung Der Angewandten Forschung E.V7
  • AS42873MPG FR S Max Planck Gesellschaft Zur Forderung Der Wissenschaften E.V7
  • AS34878KIT Karlsruhe Institute Of Technology4
  • AS215185ENTROPIA EVENT Entropia E.V3
  • AS13020CCCV Chaos Computer Club Veranstaltungsgesellschaft MbH2
  • AS50964Komm ONE Civillent2
  • AS60824Fraunhofer Freiburg Fraunhofer Gesellschaft Zur Foerderung Der Angewandten Forschung E.V2
  • AS204680KIT STUDENT Karlsruhe Institute Of Technology2
  • AS219090FIBERGARDEN Temporaerhaus E.V2
  • AS35052AT TLD SERVICES ACONET1
  • AS39100PFORZHEIM Stadtverwaltung Pforzheim1
  • AS202113PLANB Plan B. Solutions1
  • AS203703BITBW1
  • AS213341SWAGSPACE Johannes Erwerle1

Other adjacent networks (3)

Adjacent to AS553 in the transit part of AS paths: peers, providers or customers.

  • AS6204ZET NET INTERKVM HOST2
  • AS25538IN ULM Internet Ulm/Neu Ulm E.V2
  • AS212522SIX ISP Service EG2
ASPA
Published5 upstreams, 12 downstreams
Authorized Upstream Providers
AS559AS680AS1299AS2914AS3320
Expires 2026-10-27
Listed as Upstream Provider by
12 ASNs
View full ASPA details →
Abuse Contact
+31205354444
External Links
RIPE WhoisRIPEstat

Learn more

API
Open
GEThttps://api.ipctl.io/v1/asn/553

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/553" | jq