Home Prefix Lookup9.158.0.0/16

9.158.0.0/16 - BGP Prefix

IPv4RIPE NCCnot announced RPKI Valid

CIDR

9.158.0.0/16

IP Version

IPv4

Addresses

65.5K

Mask

/16 (255.255.0.0)

Country

🇬🇧 United Kingdom

City

London

RIR

RIPE NCC

Status

not announced

Allocated

Announced BGP Routes

0 of 0 routes

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
This prefix is not currently announced in BGP. See covering prefix below.

Covering Prefix

1 less-specific announcement

Prefix	Origin AS	RPKI	IRR	Last Seen
9.158.0.0/15	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	Valid	-	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
9.158.0.0/15	AS8075	/15	ripe

Transfer History

Registry transfers of 9.158.0.0/16, blocks inside it, or blocks containing it.

9.158.0.0/16inter-RIRTransfer · 2025-05-20
IBM
🇺🇸 US ARIN
→
Microsoft Limited
RIPE NCC
9.158.0.0/15inter-RIRTransfer · 2025-05-20
not published
ARIN
→
Microsoft Limited
RIPE NCC

Date	Resource	From	To	Type
2025-05-20	9.158.0.0/16inter-RIR	IBM 🇺🇸 US ARIN	Microsoft Limited RIPE NCC	Transfer
2025-05-20	9.158.0.0/15inter-RIR	not published ARIN	Microsoft Limited RIPE NCC	Transfer

Related Prefixes

Covering prefix

9.158.0.0/15AS8075

Geolocation

Country🇬🇧United KingdomGB

RegionEngland

CityLondon

Coordinates51.5072, -0.1276 ↗

Learn more

RPKI and ROAs explainedWhat RPKI valid, invalid and no ROA mean
RPKI validatorCheck ROA coverage for any prefix or ASN
What is BGP?How prefixes are announced and routed
More-specific prefixesGlossary: covering and more-specific routes
IPv4 transfers in the RIPE NCC regionWho bought and sold address space recently

API

Open

GEThttps://api.ipctl.io/v1/prefix/9.158.0.0/16

Returns prefix allocation, BGP routes, and more-specific subnets.

curl -s "https://api.ipctl.io/v1/prefix/9.158.0.0/16" | jq

External Links

RIPEstat