Home ASN LookupAS31477

AS31477 DUOCAST-AS Duocast B.V.

🇳🇱

Org handle: ORG-DA16-RIPE

RIPE NCCallocated

Announced Prefixes (BGP)

58total

46 IPv412 IPv6

IPv4 Addresses

Allocated (RIR)30,464

Announced (BGP)41,728

IPv6 Addresses

Allocated (RIR)1.2×10³⁰

Announced (BGP)1.4×10³⁰

Prefix Limit (IPv4)

100

Prefix Limit (IPv6)

Country

🇳🇱 NL

RIR

RIPE NCC

Status

allocated

Allocated

2004-05-26

Routing hygiene

Score 13/100 · Low risk

RPKI ROA coverage

69%

no RPKI invalid prefixes

IRR route objects

98.3%

1 prefix registered for another origin

Hijack signals

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

Upstreams

diversity 64/100

31% of announced prefixes (18 of 58) have no valid ROA

Based on 58 announced prefixes, updated daily (2026-10-24). How the score works · RPKI explained

Announced Prefixes

(BGP)58

Prefix	RPKI	IRR	Last Seen
37.9.160.0/21	No ROA	RIPE	2026-10-26
45.82.188.0/22	Valid	RIPE	2026-10-26
45.82.188.0/24	Valid	-	2026-10-26
82.150.139.0/24	Valid	RIPE	2026-10-26
83.137.144.0/21	Valid	RIPE	2026-10-26
83.137.145.0/24	Valid	RIPE	2026-10-26
83.137.146.0/24	Valid	RIPE	2026-10-26
83.137.151.0/24	Valid	RIPE	2026-10-26
87.238.168.0/21	Valid	RIPE	2026-10-26
87.238.171.0/24	Valid	-	2026-10-26

1-10 of 58

1 / 6

Allocated Prefixes

(RIR)41

Prefix	Country	RIR	Status
37.9.160.0/21	🇳🇱 NL	RIPENCC	allocated
45.82.188.0/22	🇳🇱 NL	RIPENCC	allocated
82.150.139.0/24	🇳🇱 NL	RIPE	assigned
83.137.144.0/21	🇳🇱 NL	RIPENCC	allocated
83.137.145.0/24	🇳🇱 NL	RIPE	assigned
87.238.168.0/21	🇳🇱 NL	RIPENCC	allocated
89.188.0.0/19	🇳🇱 NL	RIPENCC	allocated
89.200.200.0/21	🇳🇱 NL	RIPENCC	assigned
91.196.106.0/24	🇳🇱 NL	RIPENCC	assigned
91.196.107.0/24	🇳🇱 NL	RIPENCC	assigned

1-10 of 41

1 / 5

All 58 announced prefixes of AS31477 →

Downstream Customers(4)

ASN	Name
AS39002	🇷🇴XINDI-AS XINDI Networks SRL
AS57984	🇷🇴XINDI-AS XINDI Networks SRL
AS213052	🇳🇱BittenBytes Bram Wittendorp trading as BittenBytes
AS218916	🇳🇱FIOD Fiscale Inlichtingen en Opsporingsdienst (FIOD)

BGP Neighbours

(seen in AS paths)

Upstreams (7)

Networks AS31477 hands its own prefixes to: transit providers, or peers at an exchange.

AS1299TWELVE99 Arelion Sweden AB31
AS2914NTT America16
AS50673Serverius Holding B.V5
AS3320DTAG Deutsche Telekom2
AS39292DUOCASTBACKUP Duocast B.V2
AS6204ZET NET INTERKVM HOST1
AS33891CORE BACKBONE Core Backbone1

Downstreams (10)

Networks whose own prefixes AS31477 passes on: usually its customers.

AS8312ZYLON Bas Smit Trading As Zylon10
AS35974Quality Technology Services2
AS198508PLUSINE Systems B.V2
AS29028COMPUKOS DirectVPS B.V1
AS39002XINDI Networks1
AS51517ORANJEKOEK Arend Brouwer1
AS51923NBA 'Nothing But Air' Services B.V1
AS204751MOBIELWERKT B.V1
AS218916FIOD Fiscale Inlichtingen En Opsporingsdienst (FIOD)1
AS398300OCIENT1

ASPA

No ASPA0 upstreams, 4 downstreams

Listed as Upstream Provider by

4 ASNs

View full ASPA details →

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
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/31477

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

curl -s "https://api.ipctl.io/v1/asn/31477" | jq