HomeASN LookupAS55900

AS55900 GLBB-JP GLBB Japan KK

Announced Prefixes (BGP)
32total
31 IPv41 IPv6
IPv4 Addresses
Allocated (RIR)43,776
Announced (BGP)57,344
IPv6 Addresses
Allocated (RIR)7.9×10²⁸
Announced (BGP)7.9×10²⁸
Prefix Limit (IPv4)
100
Prefix Limit (IPv6)
5
Allocated
-

Announced Prefixes

(BGP)33
|
Prefix
RPKI
IRR
Last Seen
27.0.16.0/20
 Valid
Other IRR
2026-10-11
27.0.31.0/24
 Valid
Other IRR
2026-10-11
43.248.160.0/22
 Valid
Other IRR
2026-10-11
103.7.88.0/22
 Valid
Other IRR
2026-10-11
103.13.248.0/22
 Valid
Other IRR
2026-10-11
103.100.189.0/24
 Valid
Other IRR
2026-10-11
103.100.190.0/23
 Valid
Other IRR
2026-10-11
103.250.92.0/22
 Valid
Other IRR
2026-10-11
103.250.92.0/24
 Valid
Other IRR
2026-10-11
103.250.93.0/24
 Valid
Other IRR
2026-10-11
1-10 of 33
1 / 4

Allocated Prefixes

(RIR)19
Prefix
Country
RIR
Status
27.0.16.0/20🇯🇵 JPAPNICallocated
43.248.160.0/22🇯🇵 JPAPNICallocated
103.7.88.0/22🇯🇵 JPAPNICallocated
103.13.248.0/22🇯🇵 JPAPNICallocated
103.100.189.0/24🇯🇵 JPAPNICallocated
103.100.190.0/23🇯🇵 JPAPNICallocated
103.250.92.0/22🇯🇵 JPAPNICallocated
109.236.0.0/20🇯🇵 JPAPNICallocated
123.100.136.0/22🇯🇵 JPAPNICallocated
123.100.156.0/22🇯🇵 JPAPNICallocated
1-10 of 19
1 / 2

All 33 announced prefixes of AS55900 →

BGP Neighbours

(seen in AS paths)

Upstreams (4)

Networks AS55900 hands its own prefixes to: transit providers, or peers at an exchange.

  • AS2497IIJ Internet Initiative Japan29
  • AS6939Hurricane Electric2
  • AS2914NTT America1
  • AS135607INFINIVAN AP Infinivan Incorporated1

Downstreams (3)

Networks whose own prefixes AS55900 passes on: usually its customers.

Other adjacent networks (2)

Adjacent to AS55900 in the transit part of AS paths: peers, providers or customers.

  • AS1299TWELVE99 Arelion Sweden AB8
  • AS63800SERVER G SERVER G Group3
ASPA
No ASPA
External Links
RIPEstat

Learn more

API
Open
GEThttps://api.ipctl.io/v1/asn/55900

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

curl -s "https://api.ipctl.io/v1/asn/55900" | jq