Home ASN LookupAS1147

AS1147 MCL-AS SURF B.V.

🇳🇱

Org handle: ORG-Sb3-RIPE

Medisch Centrum Leeuwarden

RIPE NCCallocated

Announced Prefixes (BGP)

4total

4 IPv40 IPv6

IPv4 Addresses

Allocated (RIR)34,816

Announced (BGP)35,328

IPv6 Addresses

Allocated (RIR)0

Announced (BGP)0

Prefix Limit (IPv4)

Prefix Limit (IPv6)

Country

🇳🇱 NL

RIR

RIPE NCC

Status

allocated

Allocated

1993-09-01

Announced Prefixes

(BGP)4

Prefix	RPKI	IRR	Last Seen
145.98.0.0/21	Valid	RIPE	2026-10-11
145.98.7.0/24	Valid	RIPE	2026-10-11
145.127.128.0/17	Valid	RIPE	2026-10-11
145.127.245.0/24	Valid	RIPE	2026-10-11

Allocated Prefixes

(RIR)2

Prefix	Country	RIR	Status
145.98.0.0/21	🇳🇱 NL	RIPE	assigned
145.127.128.0/17	🇳🇱 NL	RIPE	assigned

All 4 announced prefixes of AS1147 →

BGP Neighbours

(seen in AS paths)

Upstreams (2)

Networks AS1147 hands its own prefixes to: transit providers, or peers at an exchange.

AS1103SURFNET NL SURF B.V2
AS35467DDF DDFR IT Infra & Security B.V2

Transfer History

Registry transfers of AS1147 between organisations.

AS1147M&A · 2021-04-19
Surfnet B.V.
RIPE NCC
→
SURF B.V.
RIPE NCC

Date	Resource	From	To	Type
2021-04-19	AS1147	Surfnet B.V. RIPE NCC	SURF B.V. RIPE NCC	M&A

ASPA

No ASPA

Abuse Contact

+31205354444

External Links

RIPE Whois RIPEstat

Learn more

What is an ASN?Autonomous systems, ASN ranges and how they are assigned
RPKI and route origin validationWhat the RPKI badges on the prefix list mean
ASPA explainedWhy AS1147 should publish an ASPA object
IPv4 transfers in the RIPE NCC regionMonthly volume and the latest registry transfers
ASN data in AI agents and SIEMMCP server and API integrations

API

Open

GEThttps://api.ipctl.io/v1/asn/1147

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

curl -s "https://api.ipctl.io/v1/asn/1147" | jq