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If you are scraping this block for the prefixes that a AS originates, please use the data dumps in https://bgp.tools/kb/api and cache them

	Prefix	Description
	83.230.99.0/24	Uniwersytet Bielsko-Bialski
	83.230.64.0/21	Slaski Uniwersytet Medyczny w Katowicach
	83.230.64.0/20	Silesian University of Technology, Computer Centre
	83.230.96.0/19	Silesian University of Technology, Computer Centre
	83.230.110.0/24	Akademia Sztuk Pieknych w Katowicach
	83.230.118.0/23	Uniwersytet Bielsko-Bialski
	91.220.103.0/24	Biblioteka Slaska
	155.158.0.0/16	University of Silesia in Katowice, Poland
	157.158.0.0/16	CKPOLSL - Silesian University of Technology, Computer...
	212.106.176.0/20	Silesian University of Technology, Computer Centre
	212.106.183.0/24	Uniwersytet Bielsko-Bialski
	212.106.184.0/22	Uniwersytet Bielsko-Bialski
	213.227.80.0/20	Silesian University of Technology, Computer Centre
	213.227.88.0/21	Uniwersytet Ekonomiczny w Katowicach
	213.227.96.0/19	Silesian University of Technology, Computer Centre
	2a01:1d8::/30	Silesian University of Technology, Computer Centre
	2a01:1dc::/32	Silesian University of Technology, Computer Centre
	2a01:1dd::/32	Silesian University of Technology, Computer Centre
	2a01:1de::/32	Silesian University of Technology, Computer Centre

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Network Policy

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How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS8501	Institute of Bioorganic Chemistry Polish Academy of S...	✔	✔
	AS15744	Silesian University of Technology, Computer Centre	✔	✔
	AS5617	Orange Polska Spolka Akcyjna	✔	✔

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Peers

	ASN	Description	IPv4	IPv6
	AS8501	Institute of Bioorganic Chemistry Polish Academy of S...	✔	✔
	AS15744	Silesian University of Technology, Computer Centre	✔	✔
	AS6939	Hurricane Electric LLC	✔	✔
	AS3303	Swisscom (Schweiz) AG	✔	✔
	AS6204	INTERKVM HOST SRL	✔	✔
	AS49544	i3D.net B.V	✔	✔
	AS202520	SkyPass Solutions Sp. z.o.o.	✔	✔
	AS24482	SG.GS	✔	✔
	AS42739	Hawe Telekom S.A. in Restructuring	✔	✘
	AS51465	M3.NET Sp. z o.o. / Fixmap Group	✔	✘
	AS5617	Orange Polska Spolka Akcyjna	✔	✔
	AS53062	ALT | GRUPO BRASIL TECPAR	✔	✘
	AS32590	Valve Corporation	✔	✔
	AS199524	Gcore S.A.	✔	✔
	AS208041	Rafal Rajba trading as INTERTELL	✔	✔
	AS20555	Akademia WIT w Warszawie	✔	✔

aut-num:        AS8508
as-name:        SILWEB-AS-EDU
descr:          SILWEB Autonomous System - Academic
descr:          Silesian Regional Computer Network
descr:          Poland
org:            ORG-CSUo1-RIPE
remarks:        ---------------- UPSTREAM -----------------------------------
import:         from AS8501 action pref=70; accept ANY
export:         to AS8501 announce AS8508 AS15744:AS-SASK-COM
remarks:        ---------------- PIONIER ------------------------------------
import:         from AS1887 action pref=80; accept community(8501:1011, 8501:1013, 8501:1014, 8501:1015, 8501:1016)
import:         from AS5550 action pref=80; accept community(8501:1011, 8501:1013, 8501:1014, 8501:1015, 8501:1016)
import:         from AS8267 action pref=80; accept community(8501:1011, 8501:1013, 8501:1014, 8501:1015, 8501:1016)
import:         from AS8286 action pref=80; accept community(8501:1011, 8501:1013, 8501:1014, 8501:1015, 8501:1016)
import:         from AS8326 action pref=80; accept community(8501:1011, 8501:1013, 8501:1014, 8501:1015, 8501:1016)
import:         from AS8664 action pref=80; accept community(8501:1011, 8501:1013, 8501:1014, 8501:1015, 8501:1016)
import:         from AS8970 action pref=80; accept community(8501:1011, 8501:1013, 8501:1014, 8501:1015, 8501:1016)
import:         from AS9112 action pref=80; accept community(8501:1011, 8501:1013, 8501:1014, 8501:1015, 8501:1016)
import:         from AS12324 action pref=80; accept community(8501:1011, 8501:1013, 8501:1014, 8501:1015, 8501:1016)
import:         from AS12423 action pref=80; accept community(8501:1011, 8501:1013, 8501:1014, 8501:1015, 8501:1016)
import:         from AS15373 action pref=80; accept community(8501:1011, 8501:1013, 8501:1014, 8501:1015, 8501:1016)
import:         from AS21182 action pref=80; accept community(8501:1011, 8501:1013, 8501:1014, 8501:1015, 8501:1016)
import:         from AS24848 action pref=80; accept community(8501:1011, 8501:1013, 8501:1014, 8501:1015, 8501:1016)
export:         to AS1887 announce AS8508 AS15744:AS-SASK-COM
export:         to AS5550 announce AS8508 AS15744:AS-SASK-COM
export:         to AS8267 announce AS8508 AS15744:AS-SASK-COM
export:         to AS8286 announce AS8508 AS15744:AS-SASK-COM
export:         to AS8326 announce AS8508 AS15744:AS-SASK-COM
export:         to AS8664 announce AS8508 AS15744:AS-SASK-COM
export:         to AS8970 announce AS8508 AS15744:AS-SASK-COM
export:         to AS9112 announce AS8508 AS15744:AS-SASK-COM
export:         to AS12324 announce AS8508 AS15744:AS-SASK-COM
export:         to AS12423 announce AS8508 AS15744:AS-SASK-COM
export:         to AS15373 announce AS8508 AS15744:AS-SASK-COM
export:         to AS21182 announce AS8508 AS15744:AS-SASK-COM
export:         to AS24848 announce AS8508 AS15744:AS-SASK-COM
remarks:        ---------------- PEERINGS -----------------------------------
remarks:        ---------------- import -------------------------------------
import:         from AS5617 action pref=80; accept ANY
import:         from AS6778 action pref=80; accept AS-TELBANK
import:         from AS8246 action pref=80; accept ANY
import:         from AS6830 action pref=80; accept AS8508:AS-SASK-UPC-IN
import:         from AS12741 action pref=80; accept AS-NETIA
import:         from AS13000 action pref=80; accept AS-LEON
import:         from AS20960 action pref=80; accept ANY
import:         from AS24748 action pref=80; accept AS24748:AS-IX
import:         from AS29535 action pref=80; accept AS-TPIX
import:         from AS31242 action pref=80; accept AS-TKPSA-PEERS
import:         from AS34509 action pref=101; accept AS34509 AS43015
import:         from AS39091 action pref=80; accept AS39091
import:         from AS39869 action pref=80; accept AS39869 AS30838 AS42266
remarks:        SASK
import:         from AS15744 action pref=100; accept AS15744:AS-SASK-COM
remarks:        ---------------- export -------------------------------------
export:         to AS5617 announce AS8508
export:         to AS6778 announce AS8508 AS15744:AS-SASK-COM
export:         to AS8246 announce AS8508 AS15744:AS-SASK-COM
export:         to AS6830 announce AS8508 AS15744:AS-SASK-COM
export:         to AS12741 announce AS8508 AS15744:AS-SASK-COM
export:         to AS13000 announce AS8508 AS15744:AS-SASK-COM
export:         to AS20960 announce AS8508 AS15744:AS-SASK-COM
export:         to AS24748 announce AS8508 AS15744:AS-SASK-COM
export:         to AS29535 announce AS8508
export:         to AS31242 announce AS8508 AS15744:AS-SASK-COM
export:         to AS34509 announce AS8508 AS15744:AS-SASK-COM
export:         to AS39091 announce AS8508 AS15744:AS-SASK-COM
export:         to AS39869 announce AS8508 AS15744:AS-SASK-COM
remarks:        SASK
export:         to AS15744 announce AS8508 NOT AS20965
remarks:        ---------------- mp-import ----------------------------------
remarks:        UPSTREAM
mp-import:      afi ipv6.unicast from AS8501 action pref=70; accept ANY
remarks:        PIONIER
mp-import:      afi ipv6.unicast from AS5550 action pref=70; accept community(8501:1011, 8501:1013, 8501:1014, 8501:1015, 8501:1016)
mp-import:      afi ipv6.unicast from AS8267 action pref=70; accept community(8501:1011, 8501:1013, 8501:1014, 8501:1015, 8501:1016)
mp-import:      afi ipv6.unicast from AS8664 action pref=70; accept community(8501:1011, 8501:1013, 8501:1014, 8501:1015, 8501:1016)
mp-import:      afi ipv6.unicast from AS8970 action pref=70; accept community(8501:1011, 8501:1013, 8501:1014, 8501:1015, 8501:1016)
mp-import:      afi ipv6.unicast from AS9112 action pref=70; accept community(8501:1011, 8501:1013, 8501:1014, 8501:1015, 8501:1016)
remarks:        PEERINGS
mp-import:      afi ipv6.unicast from AS24748 action pref=70; accept AS24748
mp-import:      afi ipv6.unicast from AS8246 action pref=70; accept AS8246
remarks:        ---------------- mp-export ----------------------------------
remarks:        UPSTREAM
mp-export:      afi ipv6.unicast to AS8501 announce AS8508 AS15744
remarks:        PIONIER
mp-export:      afi ipv6.unicast to AS5550 announce AS8508 AS15744
mp-export:      afi ipv6.unicast to AS8267 announce AS8508 AS15744
mp-export:      afi ipv6.unicast to AS8664 announce AS8508 AS15744
mp-export:      afi ipv6.unicast to AS8970 announce AS8508 AS15744
mp-export:      afi ipv6.unicast to AS9112 announce AS8508 AS15744
remarks:        PEERINGS
mp-export:      afi ipv6.unicast to AS24748 announce AS8508 AS15744
mp-export:      afi ipv6.unicast to AS8246 announce AS8508 AS15744
remarks:        -------------------------------------------------------------
admin-c:        DUMY-RIPE
tech-c:         DUMY-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
mnt-by:         PL-CKPOLSL-MNT
created:        1970-01-01T00:00:00Z
last-modified:  2019-12-04T11:17:09Z
source:         RIPE
remarks:        ****************************
remarks:        * THIS OBJECT IS MODIFIED
remarks:        * Please note that all data that is generally regarded as personal
remarks:        * data has been removed from this object.
remarks:        * To view the original object, please query the RIPE Database at:
remarks:        * http://www.ripe.net/whois
remarks:        ****************************


organisation:   ORG-CSUo1-RIPE
org-name:       Silesian University of Technology, Computer Centre
country:        PL
org-type:       LIR
address:        Dummy address for ORG-CSUo1-RIPE
# Email removed, Log into bgp.tools to see whois emails
abuse-c:        SASK1-RIPE
mnt-ref:        RIPE-NCC-HM-MNT
mnt-ref:        PL-CKPOLSL-MNT
mnt-by:         RIPE-NCC-HM-MNT
mnt-by:         PL-CKPOLSL-MNT
created:        2004-04-17T11:46:47Z
last-modified:  2020-12-16T13:27:44Z
source:         RIPE
remarks:        ****************************
remarks:        * THIS OBJECT IS MODIFIED
remarks:        * Please note that all data that is generally regarded as personal
remarks:        * data has been removed from this object.
remarks:        * To view the original object, please query the RIPE Database at:
remarks:        * http://www.ripe.net/whois
remarks:        ****************************

Last Update: 2025-12-22T03:24:23Z UTC

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Member of the following AS-SETs

-	Member	ASN Count
RIPE	as8267:as-peers	12
RIPE	as-cpop	170
RIPE	as24748:as-atman6	28
RIPE	as-transroute-spec	19683
RIPE	as5617:as-akademickie	53
RIPE	as-tpix	83884
LEVEL3	as-sprint-origins	7309
RIPE	as8508:as-sask-edu	2
RIPE	as3303:as-swcmpeers	781
RIPE	as29535:as-tpix	84223
RIPE	as8508:as-slask-1011	3
RIPE	as-plnet	113
RIPE	as1887:as-peerings	6
RIPE	as5617:as-silweb	30
RIPE	as-ipartners	2849
RIPE	as29535:as-mix2	681
RIPE	as-sitel-ix-small	770
RIPE	as24848:as-peers	5
RIPE	as5617:as-pl	2043