View

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
	81.161.240.0/20	8, Kliment Ohridski St.
	81.161.240.0/24	8, Kliment Ohridski St.
	81.161.241.0/24	8, Kliment Ohridski St.
	81.161.242.0/24	8, Kliment Ohridski St.
	81.161.243.0/24	8, Kliment Ohridski St.
	81.161.244.0/24	8, Kliment Ohridski St.
	81.161.245.0/24	8, Kliment Ohridski St.
	81.161.246.0/24	8, Kliment Ohridski St.
	81.161.247.0/24	8, Kliment Ohridski St.
	81.161.248.0/24	8, Kliment Ohridski St.
	81.161.249.0/24	8, Kliment Ohridski St.
	81.161.250.0/24	8, Kliment Ohridski St.
	81.161.251.0/24	8, Kliment Ohridski St.
	81.161.252.0/24	8, Kliment Ohridski St.
	81.161.253.0/24	8, Kliment Ohridski St.
	81.161.254.0/24	8, Kliment Ohridski St.
	81.161.255.0/24	8, Kliment Ohridski St.

---

Network Policy

Click here to learn more about what this graph means and what makes up a network policy Global Aggregation Policy elegant_bartik

Chart Display Options

Display links using non straight lines

Prefixes in selected policy

Load all prefixes in policy

---

How are upstreams and downstreams calculated?

Upstreams

	ASN	Description	IPv4	IPv6
	AS8717	A1 Bulgaria EAD	✔	✘
	AS6802	Bulgarian Research and Education Network Association (BREN)	✔	✘

---

Peers

	ASN	Description	IPv4	IPv6
	AS8717	A1 Bulgaria EAD	✔	✘
	AS6802	Bulgarian Research and Education Network Association (BREN)	✔	✘

aut-num:        AS28949
sponsoring-org: ORG-MN1-RIPE
notify:         stefka@tu-sofia.bg
as-name:        TUSNET-AS
descr:          8, Kliment Ohridski St.
descr:          Sofia-1000, BULGARIA
import:         from AS9127 action pref=100; accept ANY
import:         from AS8717 action pref=100; accept ANY
import:         from AS6802 action pref=100; accept ANY
export:         to AS9127 announce AS28949
export:         to AS8717 announce AS28949
export:         to AS6802 announce AS28949
admin-c:        DUMY-RIPE
tech-c:         DUMY-RIPE
status:         ASSIGNED
mnt-by:         RIPE-NCC-END-MNT
org:            ORG-TUOS2-RIPE
mnt-by:         TUSOFIA-MNT
created:        2003-04-16T12:19:39Z
last-modified:  2025-12-23T06:42:18Z
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-TUOS2-RIPE
org-name:       Technical University of Sofia
country:        BG
org-type:       OTHER
address:        Dummy address for ORG-TUOS2-RIPE
# Email removed, Log into bgp.tools to see whois emails/phone numbers
abuse-c:        AR19085-RIPE
mnt-ref:        TUSOFIA-MNT
mnt-by:         TUSOFIA-MNT
created:        2013-02-19T08:28:11Z
last-modified:  2026-05-13T05:29:33Z
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: 2026-06-09T03:23:48Z UTC

---

Member of the following AS-SETs

-	Member	ASN Count
RIPE	as-btc-up	2464
RIPE	as-spnet	243
RIPE	as-retn-actual-v4	12810
RIPE	as-istf	10
RIPE	as8717:as-a1bg	256
LEVEL3	as-level3-origins-eu	0