Home ASN LookupAS8508

AS8508 SILWEB-AS-EDU Silesian University of Technology, Computer Centre

🇵🇱

Org handle: ORG-CSUo1-RIPE

SILWEB Autonomous System - Academic

RIPE NCCallocated

Announced Prefixes (BGP)

18total

15 IPv43 IPv6

IPv4 Addresses

Allocated (RIR)137,728

Announced (BGP)166,400

IPv6 Addresses

Allocated (RIR)0

Announced (BGP)2.3×10²⁹

Prefix Limit (IPv4)

200

Prefix Limit (IPv6)

Country

🇵🇱 PL

RIR

RIPE NCC

Status

allocated

Allocated

1997-10-13

Announced Prefixes

(BGP)18

Prefix	RPKI	IRR	Last Seen
83.230.64.0/20	Valid	RIPE	2026-10-11
83.230.64.0/21	Valid	RIPE	2026-10-11
83.230.96.0/19	Valid	RIPE	2026-10-11
83.230.99.0/24	Valid	RIPE	2026-10-11
83.230.110.0/24	Valid	RIPE	2026-10-11
83.230.118.0/23	Valid	RIPE	2026-10-11
91.220.103.0/24	Valid	RIPE	2026-10-11
155.158.0.0/16	Valid	RIPE	2026-10-11
157.158.0.0/16	Valid	RIPE	2026-10-11
212.106.176.0/20	Valid	RIPE	2026-10-11

1-10 of 18

1 / 2

Allocated Prefixes

(RIR)10

Prefix	Country	RIR	Status
83.230.64.0/21	🇵🇱 PL	RIPE	assigned
83.230.99.0/24	🇵🇱 PL	RIPE	assigned
83.230.110.0/24	🇵🇱 PL	RIPE	assigned
83.230.118.0/23	🇵🇱 PL	RIPE	assigned
91.220.103.0/24	🇵🇱 PL	RIPENCC	assigned
155.158.0.0/16	🇵🇱 PL	RIPENCC	assigned
157.158.0.0/16	🇵🇱 PL	RIPENCC	assigned
212.106.183.0/24	🇵🇱 PL	RIPE	assigned
212.106.184.0/22	🇵🇱 PL	RIPE	assigned
213.227.88.0/21	🇵🇱 PL	RIPE	assigned

All 18 announced prefixes of AS8508 →

BGP Neighbours

(seen in AS paths)

Upstreams (1)

Networks AS8508 hands its own prefixes to: transit providers, or peers at an exchange.

AS8501PIONIER Institute Of Bioorganic Chemistry Polish Academy Of Science, Poznan Supercomputing And Networking Center18

ASPA

No ASPA

Abuse Contact

+31205354444

External Links

RIPE Whois RIPEstat

Learn more

What is an ASN?Autonomous systems, ASN ranges and how they are assigned
RPKI and route origin validationWhat the RPKI badges on the prefix list mean
ASPA explainedWhy AS8508 should publish an ASPA object
IPv4 transfers in the RIPE NCC regionMonthly volume and the latest registry transfers
ASN data in AI agents and SIEMMCP server and API integrations

API

Open

GEThttps://api.ipctl.io/v1/asn/8508

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

curl -s "https://api.ipctl.io/v1/asn/8508" | jq