Home ASN LookupAS51531

AS51531 DECIX-MGMT-AS DE-CIX Management GmbH

🇩🇪

Org handle: ORG-DtGI1-RIPE

DE-CIX Management GmbH

RIPE NCCallocated

Announced Prefixes (BGP)

11total

7 IPv44 IPv6

IPv4 Addresses

Allocated (RIR)5,120

Announced (BGP)6,912

IPv6 Addresses

Allocated (RIR)6.9×10²⁸

Announced (BGP)6.9×10²⁸

Prefix Limit (IPv4)

Prefix Limit (IPv6)

Country

🇩🇪 DE

RIR

RIPE NCC

Status

allocated

Allocated

2010-09-21

Routing hygiene

Score 5/100 · Low risk

RPKI ROA coverage

100%

no RPKI invalid prefixes

IRR route objects

100%

no origin mismatches

Hijack signals

0 announced against others' ROAs, 0 own announced by others

Upstreams

diversity 50/100

All announced prefixes have a valid ROA and a matching IRR route object

Based on 11 announced prefixes, updated daily (2026-10-26). How the score works · RPKI explained

Announced Prefixes

(BGP)11

Prefix	RPKI	IRR	Last Seen
45.129.80.0/22	Valid	RIPE	2026-10-27
45.159.240.0/22	Valid	RIPE	2026-10-27
46.31.120.0/21	Valid	RIPE	2026-10-27
81.89.89.0/24	Valid	-	2026-10-27
81.89.90.0/23	Valid	-	2026-10-27
81.89.92.0/22	Valid	-	2026-10-27
185.70.20.0/22	Valid	RIPE	2026-10-27
2001:67c:4::/48	Valid	RIPE	2026-10-27
2a02:c50::/34	Valid	RIPE	2026-10-27
2a02:c50:6000::/35	Valid	RIPE	2026-10-27

1-10 of 11

1 / 2

Allocated Prefixes

(RIR)8

Prefix	Country	RIR	Status
45.129.80.0/22	🇩🇪 DE	RIPENCC	allocated
45.159.240.0/22	🇩🇪 DE	RIPENCC	allocated
46.31.120.0/21	🇩🇪 DE	RIPENCC	allocated
185.70.20.0/22	🇩🇪 DE	RIPENCC	allocated
2001:67c:4::/48	🇩🇪 DE	RIPENCC	assigned
2a02:c50::/34	🇩🇪 DE	RIPE	assigned
2a02:c50:6000::/35	🇩🇪 DE	RIPE	assigned
2a02:c50:8000::/33	🇩🇪 DE	RIPE	assigned

All 11 announced prefixes of AS51531 →

Downstream Customers(1)

ASN	Name
AS196610	🇩🇪DECIX-Academy DE-CIX Management GmbH

BGP Neighbours

(seen in AS paths)

Upstreams (2)

Networks AS51531 hands its own prefixes to: transit providers, or peers at an exchange.

AS6939Hurricane Electric9
AS33891CORE BACKBONE Core Backbone2

Downstreams (2)

Networks whose own prefixes AS51531 passes on: usually its customers.

AS715WoodyNet2
AS196610DECIX Academy DE CIX Management2

ASPA

No ASPA0 upstreams, 1 downstream

Listed as Upstream Provider by

1 ASN

View full ASPA details →

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
How to run an ASPA checkVerify the upstream providers listed above
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/51531

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

curl -s "https://api.ipctl.io/v1/asn/51531" | jq