All ASNs

Autonomous System details for AS20911

AS20911

Net-Surf.net Ltd. • net-surf.net

AS20911 — Net-Surf.net Ltd.

AS Name

NETSURF-AS-BG

Country

Bulgaria (BG)

Website

net-surf.net

Number of IPv4

71,424

Number of IPv6

ASN type

ISP

Status

Allocated

Registry

RIPE

Allocated

February 04, 2002

Last updated

December 15, 2025

IP Ranges

177 IPv4 prefixes

Prefix	Company	Number of IPs
45.90.90.0/23	Net-Surf.net Ltd.	512
45.90.90.0/24	Net-Surf.net Ltd.	256
45.90.91.0/24	Net-Surf.net Ltd.	256
46.229.192.0/20	Net-Surf.net Ltd.	4,096
46.229.192.0/23	Net-Surf.net Ltd.	512
46.229.192.0/24	Net-Surf.net Ltd.	256
46.229.193.0/24	Net-Surf.net Ltd.	256
46.229.194.0/24	PPPoE in City of Valchedram	256
46.229.195.0/24	Berk PPPoE	256
46.229.196.0/22	GPON deployment in city of Vratza	1,024
46.229.196.0/24	GPON deployment in city of Vratza	256
46.229.197.0/24	GPON deployment in city of Vratza	256
46.229.198.0/24	GPON deployment in city of Vratza	256
46.229.199.0/24	GPON deployment in city of Vratza	256
46.229.200.0/22	NetSurf.net GPON services in city of Vraca	1,024
46.229.200.0/24	NetSurf.net GPON services in city of Vraca	256
46.229.201.0/24	NetSurf.net GPON services in city of Vraca	256
46.229.202.0/24	NetSurf.net GPON services in city of Vraca	256
46.229.203.0/24	NetSurf.net GPON services in city of Vraca	256
46.229.204.0/24	NetSurf	256
46.229.205.0/24	Corporate clients	256
46.229.206.0/24	connect /30 in Sofia	256
46.229.207.0/24	Kozl	256
78.90.248.0/21	SWNET PPPoE	2,048
78.90.248.0/24	SWNET PPPoE	256
78.90.249.0/24	SWNET PPPoE	256
78.90.250.0/24	SWNET PPPoE	256
78.90.251.0/24	SWNET PPPoE	256
78.90.252.0/24	SWNET PPPoE	256
78.90.253.0/24	SWNET PPPoE	256
78.90.254.0/24	SWNET PPPoE	256
78.90.255.0/24	SWNET PPPoE	256
78.128.36.0/23	Lir.bg EOOD	512
78.128.36.0/24	Lir.bg EOOD	256
78.128.37.0/24	Lir.bg EOOD	256
78.128.40.0/24	Lir.bg EOOD	256
79.124.9.0/24	Net-Surf.net Ltd.	256
80.72.88.0/22	Net-Surf.net Ltd.	1,024
80.72.88.0/24	Net-Surf.net Ltd.	256
80.72.89.0/24	Net-Surf.net Ltd.	256
80.72.90.0/24	Net-Surf.net Ltd.	256
80.72.91.0/24	Net-Surf.net Ltd.	256
84.21.174.0/23	Net-Surf.net Ltd. GPON services	512
84.21.174.0/24	Net-Surf.net Ltd. GPON services	256
84.21.175.0/24	Net-Surf.net Ltd. GPON services	256
87.120.118.0/23	Net-Surf.net Ltd.	512
87.120.118.0/24	Net-Surf.net Ltd.	256
87.120.119.0/24	Net-Surf.net Ltd.	256
87.120.122.0/23	Net-Surf.net Ltd.	512
87.120.122.0/24	Net-Surf.net Ltd.	256
87.120.123.0/24	Net-Surf.net Ltd.	256
87.120.124.0/24	Net-Surf.net Ltd.	256
87.121.70.0/23	Net-Surf.net Ltd.	512
87.121.70.0/24	Net-Surf.net Ltd.	256
87.121.71.0/24	Net-Surf.net Ltd.	256
92.249.50.0/24	Net-Surf.net Ltd.	256
93.123.26.0/23	Neterra Ltd.	512
93.123.26.0/24	Neterra Ltd.	256
93.123.27.0/24	Neterra Ltd.	256
93.152.228.0/23	Net-Surf.net Ltd.	512
93.152.228.0/24	Net-Surf.net Ltd.	256
93.152.229.0/24	netsurf	256
93.152.248.0/22	Net-Surf.net Ltd.	1,024
93.152.248.0/24	Net-Surf.net Ltd.	256
93.152.249.0/24	Net-Surf.net Ltd.	256
93.152.250.0/24	Net-Surf.net Ltd.	256
93.152.251.0/24	Net-Surf.net Ltd.	256
93.152.252.0/23	NetSurf	512
93.152.252.0/24	NetSurf	256
93.152.253.0/24	NetSurf	256
93.152.254.0/23	NetSurf	512
93.152.254.0/24	NetSurf	256
93.152.255.0/24	NetSurf	256
94.156.162.0/23	Neterra Ltd.	512
94.156.162.0/24	Neterra Ltd.	256
94.156.163.0/24	Neterra Ltd.	256
95.111.120.0/21	NETSURF Networks for new region	2,048
95.111.120.0/24	NETSURF Networks for new region	256
95.111.121.0/24	NETSURF Networks for new region	256
95.111.122.0/24	NETSURF Networks for new region	256
95.111.123.0/24	NETSURF Networks for new region	256
95.111.124.0/24	NETSURF Networks for new region	256
95.111.125.0/24	NETSURF Networks for new region	256
95.111.126.0/24	NETSURF Networks for new region	256
95.111.127.0/24	NETSURF Networks for new region	256
95.214.27.0/24	Net-Surf.net Ltd.	256
178.254.192.0/24	Net-Surf.net Ltd.	256
178.254.193.0/24	Net-Surf.net Ltd.	256
178.254.194.0/23	Net-Surf.net Ltd.	512
178.254.194.0/24	Net-Surf.net Ltd.	256
178.254.195.0/24	Net-Surf.net Ltd.	256
178.254.196.0/23	Net-Surf.net Ltd.	512
178.254.196.0/24	Net-Surf.net Ltd.	256
178.254.197.0/24	Net-Surf.net Ltd.	256
178.254.198.0/23	Net-Surf.net Ltd.	512
178.254.198.0/24	Net-Surf.net Ltd.	256
178.254.199.0/24	Net-Surf.net Ltd.	256
178.254.200.0/23	Net-Surf.net Ltd.	512
178.254.200.0/24	Net-Surf.net Ltd.	256
178.254.201.0/24	Net-Surf.net Ltd.	256

This table only shows the first 100 of the set of IPv4 and IPv6 prefixes. All data is available via our IP data API.

IP ranges are the different blocks of IP addresses advertised by an Autonomous System (AS). These ranges can be used by the same organization operating the AS, or by different organizations.

Peers of AS20911

144 peers

AS553 AS559 AS917 AS1140 AS1828 AS1836 AS2734 AS3214 AS3303 AS3333 AS4455 AS5392 AS5394 AS5405 AS5713 AS6696 AS6720 AS6939 AS7575 AS8218 AS8660 AS8758 AS9044 AS12552 AS12637 AS12779 AS12859 AS13030 AS13237 AS13786 AS14537 AS14630 AS15547 AS15605 AS16347 AS16552 AS18106 AS20764 AS3741 AS6894 AS7713 AS8298 AS25160 AS25220 AS28792 AS31510 AS34019 AS34177 AS34288 AS35280 AS35600 AS35710 AS39122 AS47692 AS47957 AS48362 AS49544 AS50877 AS51185 AS51873 AS51907 AS52075 AS52320 AS60326 AS63927 AS64475 AS198385 AS212483 AS264479 AS20912 AS20932 AS21412 AS21700 AS24482 AS24940 AS24961 AS25091 AS29140 AS29504 AS29680 AS29691 AS30844 AS31742 AS32590 AS34549 AS34927 AS35266 AS35360 AS35369 AS37100 AS37468 AS37497 AS37680 AS37721 AS38880 AS39120 AS39305 AS39351 AS40994 AS41327 AS41666 AS41811 AS42473 AS42541 AS45352 AS47147 AS48070 AS48185 AS48919 AS49605 AS49709 AS50300 AS50304 AS50628 AS50629 AS50673 AS50763 AS51184 AS56987 AS57111 AS57118 AS58057 AS58299 AS58511 AS59890 AS59919 AS62167 AS132337 AS137409 AS199524 AS199938 AS202032 AS205112 AS206356 AS206499 AS207841 AS209823 AS212635 AS213151 AS215596 AS215628 AS263444 AS271253 AS398465

AS20911 peers with these other Autonomous Systems.

Peering is a direct, often free, traffic exchange between Autonomous Systems (ASNs). They share routes only to their own networks and customers, making connections faster and cheaper for that specific traffic, without providing full internet access to each other.

Upstreams of AS20911

5 upstreams

AS174 AS9002 AS44901 AS57344 AS59900

AS20911 uses these Autonomous Systems as its upstreams.

An upstream (or transit provider) is another AS that AS20911 pays for full internet connectivity, allowing it to reach all global destinations and be reachable by them.

Downstreams of AS20911

1 downstreams

AS8431

AS20911 provides internet connectivity to these downstream Autonomous Systems.

A downstream is a customer Autonomous System that pays another AS (its provider) for internet access. The provider AS carries the downstream's traffic and makes its network reachable.