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AS20723

MGI

CZ.MGI autonomous system, Czech Republic

Registry

Authoritative registration data

AS number
20723
Name
MGI
Organisation
CZ.MGI autonomous system, Czech Republic
Country
—
RIR
RIPE
Registered
Source:asn:rdap retrieved

IPv4 prefixes

7

IPv6 prefixes

1

Total announced

8

Announced prefixes

Observed in BGP by route collectors, not a registry allocation list

Prefixes announced by AS20723
217.112.160.0/20 IPv4 /20 not checked
217.115.240.0/20 IPv4 /20 not checked
131.117.208.0/21 IPv4 /21 not checked
178.20.136.0/21 IPv4 /21 not checked
79.170.248.0/21 IPv4 /21 not checked
185.111.96.0/22 IPv4 /22 not checked
185.84.232.0/22 IPv4 /22 not checked
2a00:6500::/29 IPv6 /29 RPKI valid

No rows match “”.

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Source:ripestat:announced-prefixes observed

Internet Exchanges

Exchanges where this network has a listed peering LAN connection

Internet Exchange memberships listed for AS20723
Address families
NIX.CZ: Public peering VLAN 25,000 Mbps IPv4 · IPv6

No rows match “”.

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Source:peeringdb retrieved

Exchange membership means the network has a listed connection; it does not prove peering with other members.

Observed adjacencies

Networks seen next to AS20723 in BGP paths by route collectors.

Source:ripestat:asn-neighbours observed

Observed upstreams

10 networks seen before AS20723 in AS paths

Observed upstreams
Families
AS3257 GTT-BACKBONE 133 579
v4 v6
AS30058 FDCSERVERS 105 386
v4
AS47232 ISPAlliance 210 361
v4 v6
AS6939 HURRICANE 14 86
v4
AS1764 NEXTLAYER-AS 4 30
v4 v6
AS8218 NEO-ASN 6 22
v4 v6
AS16019 VODAFONE-CZ-AS 7 16
v4 v6
AS286 KPN 2 8
v4 v6
AS6204 ZET-NET 1 7
v4
AS6663 TTI-NET 1 7
v4

No rows match “”.

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Observed downstreams

2 networks seen after AS20723 in AS paths

Observed downstreams
Families
AS204405 DurnetCZ 135 174
v6
AS2852 CESNET2 37 47
v4 v6

No rows match “”.

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Uncertain adjacencies

5 adjacencies that may be an artefact of collector peering

Uncertain adjacencies
Families
AS24482 SGGS-AS-AP 2 32
v4 v6
AS51184 FONIRA 2 18
v4 v6
AS29504 LBCFREE 2 9
v4 v6
AS40994 Alwyzon 2 9
v4 v6
AS49544 i3Dnet 2 9
v4 v6

No rows match “”.

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Note:
These are observed adjacencies derived from BGP path data, not confirmed commercial relationships. A network appearing before another in an AS path does not establish that it is a paying transit customer, a settlement free peer, or anything else contractual. Adjacencies marked uncertain were seen only as direct peers of a route collector, so the collector's own peering may have created them.