Home ASN LookupAS51681

AS51681 DATIUM SINEASEN S.L.

🇪🇸

Org handle: ORG-CS129-RIPE

RIPE NCCallocated

Announced Prefixes (BGP)

12total

12 IPv40 IPv6

IPv4 Addresses

Allocated (RIR)5,888

Announced (BGP)6,912

IPv6 Addresses

Allocated (RIR)0

Announced (BGP)0

Prefix Limit (IPv4)

Prefix Limit (IPv6)

Country

🇪🇸 ES

RIR

RIPE NCC

Status

allocated

Allocated

2010-10-19

Announced Prefixes

(BGP)12

Prefix	RPKI	IRR	Last Seen
178.239.208.0/20	Valid	RIPE	2026-10-11
185.105.16.0/24	Valid	RIPE	2026-10-11
185.105.17.0/24	Valid	RIPE	2026-10-11
185.105.18.0/24	Valid	RIPE	2026-10-11
185.105.19.0/24	Valid	RIPE	2026-10-11
185.191.8.0/24	No ROA	RIPE	2026-10-11
185.191.9.0/24	No ROA	RIPE	2026-10-11
185.191.10.0/24	No ROA	RIPE	2026-10-11
185.191.11.0/24	No ROA	RIPE	2026-10-11
185.251.188.0/24	No ROA	RIPE	2026-10-11

1-10 of 12

1 / 2

Allocated Prefixes

(RIR)5

Prefix	Country	RIR	Status
178.239.208.0/20	🇪🇸 ES	RIPENCC	allocated
185.105.16.0/22	🇪🇸 ES	RIPENCC	allocated
185.251.188.0/24	🇪🇸 ES	RIPE	assigned
185.251.189.0/24	🇪🇸 ES	RIPE	assigned
185.251.190.0/24	🇪🇸 ES	RIPE	assigned

All 12 announced prefixes of AS51681 →

BGP Neighbours

(seen in AS paths)

Upstreams (3)

Networks AS51681 hands its own prefixes to: transit providers, or peers at an exchange.

AS3356Level 3 Parent5
AS29119SERVIHOSTING AIRE NETWORKS DEL MEDITERRANEO SL UNIPERSONAL5
AS4230CLARO S.A2

Transfer History

Registry transfers of AS51681 between organisations.

AS51681M&A · 2019-09-12
CARRIERENABLER S.L.
RIPE NCC
→
SINEASEN S.L.
RIPE NCC

Date	Resource	From	To	Type
2019-09-12	AS51681	CARRIERENABLER S.L. RIPE NCC	SINEASEN S.L. RIPE NCC	M&A

ASPA

No ASPA

Abuse Contact

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 AS51681 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/51681

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

curl -s "https://api.ipctl.io/v1/asn/51681" | jq