Home Prefix Lookup52.0.0.0/12

52.0.0.0/12 - BGP Prefix

IPv4ARINnot announced RPKI Valid

CIDR

52.0.0.0/12

IP Version

IPv4

Addresses

Mask

/12 (255.240.0.0)

Country

🇺🇸 United States

City

Ashburn

RIR

ARIN

Status

not announced

Allocated

Announced BGP Routes

0 of 0 routes

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
This prefix is not announced as a whole. Parts of it are announced as more-specific prefixes, see below.

Related Announcements

1 less-specific, 12 more-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
52.0.0.0/11	AS16509 AMAZON-02 - Amazon.com, Inc.	Valid	-	2026-10-11
52.0.0.0/15	AS14618 AMAZON-AES - Amazon.com, Inc.	Valid	-	2026-10-11
52.2.0.0/15	AS14618 AMAZON-AES - Amazon.com, Inc.	Valid	-	2026-10-11
52.4.0.0/14	AS14618 AMAZON-AES - Amazon.com, Inc.	Valid	-	2026-10-11
52.8.0.0/16	AS16509 AMAZON-02 - Amazon.com, Inc.	Valid	-	2026-10-11
52.9.0.0/16	AS16509 AMAZON-02 - Amazon.com, Inc.	Valid	-	2026-10-11
52.10.0.0/15	AS16509 AMAZON-02 - Amazon.com, Inc.	Valid	-	2026-10-11
52.12.0.0/15	AS16509 AMAZON-02 - Amazon.com, Inc.	Valid	-	2026-10-11
52.14.0.0/16	AS16509 AMAZON-02 - Amazon.com, Inc.	Valid	-	2026-10-11
52.15.0.0/19	AS16509 AMAZON-02 - Amazon.com, Inc.	Valid	-	2026-10-11
52.15.32.0/19	AS16509 AMAZON-02 - Amazon.com, Inc.	Valid	-	2026-10-11
52.15.64.0/18	AS16509 AMAZON-02 - Amazon.com, Inc.	Valid	-	2026-10-11
52.15.128.0/17	AS16509 AMAZON-02 - Amazon.com, Inc.	Valid	-	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
52.0.0.0/11	AS16509	/11	arin

Transfer History

Registry transfers of 52.0.0.0/12, blocks inside it, or blocks containing it.

52.0.0.0/12Transfer · 2015-01-21
E.I. du Pont de Nemours and Co., Inc.
🇺🇸 US ARIN
→
Amazon Technologies Inc.
🇺🇸 US ARIN
52.0.0.0/11Transfer · 2015-01-21
E.I. du Pont de Nemours and Co., Inc.
🇺🇸 US ARIN
→
Amazon Technologies Inc.
🇺🇸 US ARIN

Date	Resource	From	To	Type
2015-01-21	52.0.0.0/12	E.I. du Pont de Nemours and Co., Inc. 🇺🇸 US ARIN	Amazon Technologies Inc. 🇺🇸 US ARIN	Transfer
2015-01-21	52.0.0.0/11	E.I. du Pont de Nemours and Co., Inc. 🇺🇸 US ARIN	Amazon Technologies Inc. 🇺🇸 US ARIN	Transfer

Related Prefixes

Covering prefix

52.0.0.0/11AS16509

Geolocation

Country🇺🇸United StatesUS

RegionVirginia

CityAshburn

Coordinates39.0438, -77.4874 ↗

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/52.0.0.0/12

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

curl -s "https://api.ipctl.io/v1/prefix/52.0.0.0/12" | jq

External Links

RIPEstat