Home Prefix Lookup209.146.128.0/17

209.146.128.0/17 - Zayo Bandwidth (AS6461)

IPv4ARINallocatedAS6461ZAYO-6461 - Zayo Bandwidth RPKI Valid

CIDR

209.146.128.0/17

IP Version

IPv4

Addresses

32.7K

Mask

/17 (255.255.128.0)

Country

🇺🇸 United States

City

Denver (Central)

RIR

ARIN

Status

allocated

Allocated

1997-10-08

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
209.146.128.0/17	AS6461 ZAYO-6461 - Zayo Bandwidth	Valid	-	2026-10-12

More-Specific Announcements

9 more-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
209.146.153.0/24	AS15290 ZAYO-CAN-15290 - Zayo Bandwidth	Valid	-	2026-10-12
209.146.166.0/24	AS15290 ZAYO-CAN-15290 - Zayo Bandwidth	Valid	-	2026-10-12
209.146.169.0/24	AS15290 ZAYO-CAN-15290 - Zayo Bandwidth	Valid	-	2026-10-12
209.146.181.0/24	AS15290 ZAYO-CAN-15290 - Zayo Bandwidth	Valid	-	2026-10-12
209.146.198.0/24	AS15290 ZAYO-CAN-15290 - Zayo Bandwidth	Valid	-	2026-10-12
209.146.220.0/24	AS15290 ZAYO-CAN-15290 - Zayo Bandwidth	Valid	-	2026-10-12
209.146.234.0/24	AS15290 ZAYO-CAN-15290 - Zayo Bandwidth	Valid	-	2026-10-12
209.146.237.0/24	AS15290 ZAYO-CAN-15290 - Zayo Bandwidth	Valid	-	2026-10-12
209.146.238.0/24	AS15290 ZAYO-CAN-15290 - Zayo Bandwidth	Valid	-	2026-10-12

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
209.146.128.0/17	AS6461	/17	arin

Transfer History

Registry transfers of 209.146.128.0/17, blocks inside it, or blocks containing it.

209.146.128.0/17M&A · 2025-06-20
Allstream Corp.
🇨🇦 CA ARIN
→
Zayo Bandwidth
🇺🇸 US ARIN

Date	Resource	From	To	Type
2025-06-20	209.146.128.0/17	Allstream Corp. 🇨🇦 CA ARIN	Zayo Bandwidth 🇺🇸 US ARIN	M&A

Origin ASN

AS6461

ZAYO-6461 - Zayo Bandwidth

Related Prefixes

More prefixes of AS6461

All prefixes of AS6461 →

Geolocation

Country🇺🇸United StatesUS

RegionColorado

CityDenver (Central)

Coordinates39.7505, -105.0030 ↗

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 ARIN regionWho bought and sold address space recently

API

Open

GEThttps://api.ipctl.io/v1/prefix/209.146.128.0/17

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

curl -s "https://api.ipctl.io/v1/prefix/209.146.128.0/17" | jq

External Links

RIPEstat