HomeASN LookupAS4043

AS4043

🇺🇸

MIC-ASN - Montana Internet Corporation6e5379280e5c13ead04ec6a45fbe446b

ARINassigned
Announced Prefixes (BGP)
5total
4 IPv41 IPv6
IPv4 Addresses ⓘ
Allocated (RIR)25,344
Announced (BGP)25,344
IPv6 Addresses ⓘ
Allocated (RIR)7.9×10^28
Announced (BGP)7.9×10^28
Prefix Limit (IPv4)
50
Prefix Limit (IPv6)
5
Country
🇺🇸 US
RIR
ARIN
Status
assigned
Allocated
11/17/1994

Announced Prefixes

(BGP)5
|
Prefix
RPKI
IRR
Last Seen
199.5.172.0/24
No ROA—5/25/2026
205.207.148.0/23
No ROA—5/25/2026
206.127.64.0/18
No ROA
ARIN
5/25/2026
209.161.128.0/19
No ROA
ARIN
5/25/2026
2607:f6b8::/32
No ROA—5/25/2026

Allocated Prefixes

(RIR)5
Prefix
Country
RIR
Status
199.5.172.0/24🇺🇸 USARINallocated
205.207.148.0/23🇺🇸 USARINallocated
206.127.64.0/18🇺🇸 USARINallocated
209.161.128.0/19🇺🇸 USARINallocated
2607:f6b8::/32🇺🇸 USARINallocated
ASPA
No ASPA
External Links
ARIN WhoisHurricane Electric BGPRIPEstatPeeringDB
API
Open
GEThttps://api.ipctl.io/v1/asn/4043

Returns ASN details, announced prefixes, and BGP routing data.

curl -s "https://api.ipctl.io/v1/asn/4043" | jq