Home Prefix Lookup91.123.64.0/20

91.123.64.0/20 - Cogent Communications (AS174)

IPv4RIPE NCCallocatedAS174COGENT-174 - Cogent Communications, LLCNo ROA

CIDR

91.123.64.0/20

IP Version

IPv4

Addresses

Mask

/20 (255.255.240.0)

Country

🇳🇱 The Netherlands

City

Amsterdam

RIR

RIPE NCC

Status

allocated

Allocated

2007-01-18

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
91.123.64.0/20	AS174 COGENT-174 - Cogent Communications, LLC	No ROA	-	2026-10-11

More-Specific Announcements

4 more-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
91.123.64.0/22	AS174 COGENT-174 - Cogent Communications, LLC	Valid	-	2026-10-11
91.123.68.0/22	AS3949 NTTA-3946 - NTT America, Inc.	Valid	-	2026-10-11
91.123.72.0/22	AS3949 NTTA-3946 - NTT America, Inc.	Valid	-	2026-10-11
91.123.76.0/22	AS174 COGENT-174 - Cogent Communications, LLC	Valid	-	2026-10-11

More Specific Prefixes

Prefix	Country	Status
91.123.64.0/24	🇳🇱NL	assigned
91.123.65.0/24	🇳🇱NL	assigned
91.123.66.0/24	🇳🇱NL	assigned
91.123.67.0/24	🇳🇱NL	assigned
91.123.76.0/24	🇳🇱NL	assigned
91.123.77.0/24	🇳🇱NL	assigned
91.123.78.0/24	🇳🇱NL	assigned
91.123.79.0/24	🇳🇱NL	assigned

Transfer History

Registry transfers of 91.123.64.0/20, blocks inside it, or blocks containing it.

91.123.64.0/20M&A · 2024-08-07
Baltcom SIA
RIPE NCC
→
SIA "BITE Latvija"
RIPE NCC
91.123.64.0/20Transfer · 2016-02-01
Infrastrukturas Serviss SIA
RIPE NCC
→
SIA "Baltcom"
RIPE NCC

Date	Resource	From	To	Type
2024-08-07	91.123.64.0/20	Baltcom SIA RIPE NCC	SIA "BITE Latvija" RIPE NCC	M&A
2016-02-01	91.123.64.0/20	Infrastrukturas Serviss SIA RIPE NCC	SIA "Baltcom" RIPE NCC	Transfer

Origin ASN

AS174

COGENT-174 - Cogent Communications, LLC

Related Prefixes

More prefixes of AS174

All prefixes of AS174 →

Geolocation

Country🇳🇱The NetherlandsNL

RegionNorth Holland

CityAmsterdam

Coordinates52.3676, 4.9041 ↗

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/91.123.64.0/20

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

curl -s "https://api.ipctl.io/v1/prefix/91.123.64.0/20" | jq

External Links

RIPEstat