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AS4043

MIC-ASN

Montana Internet Corporation

Registry

Authoritative registration data

AS number
4043
Name
MIC-ASN
Organisation
Montana Internet Corporation
Country
—
RIR
ARIN
Registered
Source:asn:rdap retrieved

IPv4 prefixes

4

IPv6 prefixes

1

Total announced

5

Announced prefixes

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

Prefixes announced by AS4043
206.127.64.0/18 IPv4 /18 not checked
209.161.128.0/19 IPv4 /19 not checked
205.207.148.0/23 IPv4 /23 not checked
199.5.172.0/24 IPv4 /24 not checked
2607:f6b8::/32 IPv6 /32 not checked

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 AS4043
Address families
SIX Seattle: MTU 1500 10,000 Mbps IPv4

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 AS4043 in BGP paths by route collectors.

Source:ripestat:asn-neighbours observed

Observed upstreams

7 networks seen before AS4043 in AS paths

Observed upstreams
Families
AS6461 ZAYO-6461 493 1,479
v4 v6
AS6939 HURRICANE 45 115
v4
AS9002 RETN-AS 6 12
v4
AS7575 AARNET-AS-AP 2 4
v4
AS52025 PARADOXNETWORKS-LIMITED 2 4
v4
AS137409 GSLNETWORKS-AS-AP 2 4
v4
AS394256 CLOUDSINGULARITY 2 4
v4

No rows match “”.

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Observed downstreams

1 networks seen after AS4043 in AS paths

Observed downstreams
Families
AS399986 SPH-HELENA-MT-01 231 276
v4

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 12
v4
AS49544 i3Dnet 2 5
v4
AS18106 VIEWQWEST-SG-AP 2 4
v4
AS35280 F5 2 4
v4
AS36236 NETACTUATE 2 4
v4

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.