Home Prefix Lookup72.52.0.0/18

72.52.0.0/18 - BGP Prefix

IPv4ARINallocated RPKI Valid

CIDR

72.52.0.0/18

IP Version

IPv4

Addresses

16.3K

Mask

/18 (255.255.192.0)

Country

🇺🇸 United States

City

Cambridge (East Cambridge)

RIR

ARIN

Status

allocated

Allocated

2005-07-11

Announced BGP Routes

0 of 0 routes

RPKI:

IRR:

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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.

More-Specific Announcements

58 more-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
72.52.3.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.4.0/24	AS213120 PROLEXIC-IP-PROTECT Akamai International B.V.	Valid	-	2026-10-11
72.52.5.0/24	AS213120 PROLEXIC-IP-PROTECT Akamai International B.V.	Valid	-	2026-10-11
72.52.6.0/24	AS213120 PROLEXIC-IP-PROTECT Akamai International B.V.	Valid	-	2026-10-11
72.52.7.0/24	AS213120 PROLEXIC-IP-PROTECT Akamai International B.V.	Valid	-	2026-10-11
72.52.8.0/24	AS213120 PROLEXIC-IP-PROTECT Akamai International B.V.	Valid	-	2026-10-11
72.52.9.0/24	AS213120 PROLEXIC-IP-PROTECT Akamai International B.V.	Valid	-	2026-10-11
72.52.10.0/24	AS213120 PROLEXIC-IP-PROTECT Akamai International B.V.	Valid	-	2026-10-11
72.52.11.0/24	AS213120 PROLEXIC-IP-PROTECT Akamai International B.V.	Valid	-	2026-10-11
72.52.12.0/24	AS213120 PROLEXIC-IP-PROTECT Akamai International B.V.	Valid	-	2026-10-11
72.52.13.0/24	AS213120 PROLEXIC-IP-PROTECT Akamai International B.V.	Valid	-	2026-10-11
72.52.14.0/24	AS213120 PROLEXIC-IP-PROTECT Akamai International B.V.	Valid	-	2026-10-11
72.52.15.0/24	AS213120 PROLEXIC-IP-PROTECT Akamai International B.V.	Valid	-	2026-10-11
72.52.16.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.17.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.18.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.19.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.20.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.21.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.22.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.24.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.25.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.26.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.27.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.28.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.29.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.30.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.31.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.32.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.33.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.34.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.35.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.36.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.37.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.38.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.39.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.40.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.41.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.42.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.43.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.44.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.45.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.46.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.47.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.50.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.51.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.52.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.53.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.54.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.55.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.56.0/24	AS213120 PROLEXIC-IP-PROTECT Akamai International B.V.	Valid	-	2026-10-11
72.52.57.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.57.0/24	AS213120 PROLEXIC-IP-PROTECT Akamai International B.V.	Valid	-	2026-10-11
72.52.58.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.59.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.60.0/24	AS213120 PROLEXIC-IP-PROTECT Akamai International B.V.	Valid	-	2026-10-11
72.52.61.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11
72.52.63.0/24	AS32787 PROLEXIC-TECHNOLOGIES-DDOS-MITIGATION-NETWORK - Akamai Technologies, Inc.	Valid	-	2026-10-11

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
72.52.0.0/18	AS0	/18	arin

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS32787	ARIN	MNT-AKAMAI	2024-03-08

Transfer History

Registry transfers of 72.52.0.0/18, blocks inside it, or blocks containing it.

72.52.0.0/18M&A · 2015-06-24
Prolexic Technologies, Inc.
🇺🇸 US ARIN
→
Akamai Technologies, Inc.
🇺🇸 US ARIN

Date	Resource	From	To	Type
2015-06-24	72.52.0.0/18	Prolexic Technologies, Inc. 🇺🇸 US ARIN	Akamai Technologies, Inc. 🇺🇸 US ARIN	M&A

Geolocation

Country🇺🇸United StatesUS

RegionMassachusetts

CityCambridge (East Cambridge)

Coordinates42.3649, -71.0888 ↗

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/72.52.0.0/18

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

curl -s "https://api.ipctl.io/v1/prefix/72.52.0.0/18" | jq

External Links

RIPEstat