ResearchRouting table, RPKI, IRR & looking glass

AS553 Universitaet Stuttgart

AS553 (BELWUE) is registered to Universitaet Stuttgart in DE. It originates 100 prefixes in the global routing table.

96
IPv4 prefixes
4
IPv6 prefixes
2,115,840
IPv4 addresses
100%
RPKI valid
Registration

Who holds AS553

Names from RIPE NCC’s daily list of every allocated AS number. The ASN lookup fetches the full WHOIS record live.

AS number
AS553
Handle
BELWUE
Organization
Universitaet Stuttgart
Country
DE
ASPA
5 providers
Routing

What AS553 announces

Prefixes originated by AS553 in the RouteViews table (refreshed every four hours), each checked against the RPKI (every ten minutes) and the IRR (daily).

IPv4 prefixes
96
IPv6 prefixes
4
IPv4 addresses
2,115,840 (8,265 /24s)
RPKI valid
100 100%
RPKI invalid
0
RPKI not found
0
ROAs naming AS553
101
With an IRR route object
100 100%
Prefixes

Announced prefixes

Each opens its own page: who announces it, the paths our collectors see, its ROAs and route objects.

IPv4 (96)
45.90.132.0/22129.69.0.0/16129.143.0.0/16129.206.0.0/16132.230.0.0/16134.2.0.0/16134.34.0.0/16134.60.0.0/16134.103.0.0/16134.108.0.0/16134.155.0.0/16141.7.0.0/16141.10.0.0/16141.18.0.0/16141.19.0.0/16141.28.0.0/16141.31.0.0/16141.37.0.0/16141.47.0.0/16141.58.0.0/16141.59.0.0/16141.62.0.0/16141.62.0.0/17141.68.0.0/16141.69.0.0/16141.70.0.0/16141.70.128.0/17141.72.0.0/16141.72.0.0/17141.72.128.0/18141.79.0.0/16141.87.0.0/16144.41.0.0/16147.142.0.0/16153.96.83.0/24161.42.0.0/16178.251.231.0/24185.134.84.0/22192.42.143.0/24192.52.0.0/19192.52.32.0/20192.52.48.0/23192.52.50.0/24192.67.208.0/24192.108.35.0/24192.108.36.0/22192.108.40.0/22192.108.44.0/24193.196.0.0/15193.196.0.0/21193.196.9.0/24193.196.13.0/24193.196.16.0/20193.196.64.0/18193.196.129.0/24193.196.130.0/23193.196.132.0/22193.196.136.0/21193.196.144.0/21193.196.152.0/24193.196.154.0/23193.196.156.0/22193.196.160.0/21193.196.160.0/22193.196.165.0/24193.196.166.0/23193.196.168.0/21193.196.176.0/20193.196.192.0/18193.197.0.0/24193.197.4.0/23193.197.8.0/22193.197.20.0/23193.197.28.0/22193.197.32.0/19193.197.64.0/22193.197.68.0/23193.197.70.0/24193.197.80.0/22193.197.85.0/24193.197.86.0/23193.197.94.0/24193.197.112.0/22193.197.120.0/21193.197.130.0/24193.197.132.0/22193.197.136.0/21193.197.149.0/24193.197.152.0/22193.197.157.0/24193.197.160.0/22193.197.168.0/21193.197.180.0/22193.197.200.0/21193.197.212.0/24193.197.224.0/19
IPv6 (4)
2001:7c0::/292001:7c0::/322a06:ec00::/292a0e:3c0::/29

RPKI valid   RPKI invalid   no ROA covers it

Neighbors

Who AS553 is reached through

The AS just before AS553 in the paths our looking glass collectors hold, for 60 of its prefixes. Usually a transit provider, sometimes a peer. The number is how many of those prefixes it was seen on.

AS1299 TWELVE99 60AS6939 HURRICANE 60AS2914 NTT-DATA-2914 1
ASPA

Provider authorization

AS553 publishes an ASPA naming these providers. 11 ASes name it as a provider in theirs. Check a path.

AS559 SwitchAS680 DFNAS1299 TWELVE99AS2914 NTT-DATA-2914AS3320 DTAG
The 11 ASes that name AS553 as a provider
AS559 SwitchAS25538 IN-ULMAS34878 KITAS202113 PLANBAS204310 SYNERGIESAS204680 KIT-STUDENTAS208854 EntropiaAS212522 SIX-ASAS213068 KIT-ANYCASTAS215185 ENTROPIA-EVENTAS219090 FIBERGARDEN
IRR

Routing registry objects

From the mirrored IRR databases (RADB, the five RIRs and more). Look it up live.

Sourceas-nameMaintained by
RIPEBELWUERIPE-NCC-LEGACY-MNT, BELWUE-MNT

Route objects with origin AS553: RIPE 101

as-sets that list AS553 (21)
AS-BELWUEAS-DDITS:AS-PEERSAS-DFNFROMBELWUEAS-DFNTOABILENEAS-DOCLER:AS-PEERSAS-ECIX-FRAAS-FINECOM-PEERS-DECIXAS-MANDA-DECIX-PEERS-V4AS-MANDA-DECIX-PEERS-V6AS-MANDA-ECIX-PEERS-V4AS-MANDA-ECIX-PEERS-V6AS-RIS-RRC12AS-TITANDECIXAS203462:AS-NVC-DECIX_FRA_RSAS3303:AS-SWCMPEERSAS6695:AS-DECIX-FRA-CONNECTEDAS6695:AS-DECIX-FRA-RSAS6695:AS-DECIX-FRA-RS-V6AS680:AS-DFNFROMBELWUEAS8218:AS-PEERSAS8308:AS-PEERINGS
Tools

Check AS553 live

ASN lookup and WHOISRPKI validatorASPA validatorIRR lookup