Home Prefix Lookup72.251.192.0/18

72.251.192.0/18 - BGP Prefix

IPv4not announced RPKI Valid

CIDR

72.251.192.0/18

IP Version

IPv4

Addresses

16.3K

Mask

/18 (255.255.192.0)

Country

🇺🇸 United States

City

Mediapolis

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.

More-Specific Announcements

27 more-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
72.251.192.0/20	AS18519 MEDIAPOLIS-TELEPHONE-COMPANY - MTC Technologies	Valid	-	2026-10-11
72.251.208.0/24	AS208172 PV-HOSTED Proton AG	Valid	-	2026-10-11
72.251.209.0/24	AS208172 PV-HOSTED Proton AG	Valid	-	2026-10-11
72.251.210.0/24	AS208172 PV-HOSTED Proton AG	Valid	-	2026-10-11
72.251.211.0/24	AS208172 PV-HOSTED Proton AG	Valid	-	2026-10-11
72.251.212.0/24	AS208172 PV-HOSTED Proton AG	Valid	-	2026-10-11
72.251.213.0/24	AS208172 PV-HOSTED Proton AG	Valid	-	2026-10-11
72.251.214.0/24	AS208172 PV-HOSTED Proton AG	Valid	-	2026-10-11
72.251.215.0/24	AS208172 PV-HOSTED Proton AG	Valid	-	2026-10-11
72.251.216.0/24	AS208172 PV-HOSTED Proton AG	Valid	-	2026-10-11
72.251.217.0/24	AS208172 PV-HOSTED Proton AG	Valid	-	2026-10-11
72.251.218.0/24	AS208172 PV-HOSTED Proton AG	Valid	-	2026-10-11
72.251.219.0/24	AS208172 PV-HOSTED Proton AG	Valid	-	2026-10-11
72.251.220.0/24	AS208172 PV-HOSTED Proton AG	Valid	-	2026-10-11
72.251.221.0/24	AS208172 PV-HOSTED Proton AG	Valid	-	2026-10-11
72.251.222.0/24	AS208172 PV-HOSTED Proton AG	Valid	-	2026-10-11
72.251.223.0/24	AS396356 LATITUDE-SH - Latitude.sh	Valid	-	2026-10-11
72.251.224.0/22	AS32475 SINGLEHOP-LLC - Internap Holding LLC	No ROA	-	2026-10-11
72.251.228.0/22	AS32475 SINGLEHOP-LLC - Internap Holding LLC	No ROA	-	2026-10-11
72.251.230.0/24	AS32475 SINGLEHOP-LLC - Internap Holding LLC	No ROA	-	2026-10-11
72.251.232.0/22	AS32475 SINGLEHOP-LLC - Internap Holding LLC	No ROA	-	2026-10-11
72.251.236.0/22	AS32475 SINGLEHOP-LLC - Internap Holding LLC	No ROA	-	2026-10-11
72.251.236.0/23	AS32475 SINGLEHOP-LLC - Internap Holding LLC	No ROA	-	2026-10-11
72.251.239.0/24	AS32475 SINGLEHOP-LLC - Internap Holding LLC	No ROA	-	2026-10-11
72.251.240.0/21	AS32475 SINGLEHOP-LLC - Internap Holding LLC	No ROA	-	2026-10-11
72.251.248.0/22	AS32475 SINGLEHOP-LLC - Internap Holding LLC	No ROA	-	2026-10-11
72.251.252.0/22	AS208203 SWBX Stadtwerke Barmstedt Xtra GmbH	Valid	-	2026-10-11

More Specific Prefixes

Prefix	AS	Country	Status
72.251.192.0/20	AS18519	🇺🇸US	allocated
72.251.208.0/20		🇨🇭CH	allocated
72.251.208.0/24	AS208172	🇨🇦CA	assigned
72.251.209.0/24	AS208172	🇪🇸ES	assigned
72.251.210.0/24	AS208172	🇳🇿NZ	assigned
72.251.211.0/24	AS208172	🇫🇮FI	assigned
72.251.212.0/24	AS208172	🇵🇹PT	assigned
72.251.213.0/24	AS208172	🇵🇭PH	assigned
72.251.214.0/24	AS208172	🇧🇦BA	assigned
72.251.215.0/24	AS208172	🇮🇱IL	assigned
72.251.216.0/24	AS208172	🇭🇷HR	assigned
72.251.217.0/24	AS208172	🇳🇱NL	assigned
72.251.218.0/24	AS208172	🇦🇪AE	assigned
72.251.219.0/24	AS208172	🇺🇸US	assigned
72.251.220.0/24	AS208172	🇺🇸US	assigned
72.251.221.0/24	AS208172	🇺🇸US	assigned
72.251.222.0/24	AS208172	🇧🇩BD	assigned
72.251.223.0/24	AS396356	🇲🇽MX	assigned
72.251.224.0/20		🇺🇸US	allocated
72.251.240.0/21	AS32475	🇺🇸US	allocated
72.251.248.0/22	AS32475	🇺🇸US	allocated
72.251.252.0/22	AS208203	🇩🇪DE	allocated
72.251.252.0/24		🇩🇪DE	assigned
72.251.253.0/24		🇩🇪DE	assigned
72.251.254.0/24		🇩🇪DE	assigned
72.251.255.0/24		🇩🇪DE	assigned

Transfer History

Registry transfers of 72.251.192.0/18, blocks inside it, or blocks containing it.

72.251.192.0/20Transfer · 2026-02-17
Internap Holding LLC
🇺🇸 US ARIN
→
MTC Technologies
🇺🇸 US ARIN
72.251.208.0/20inter-RIRTransfer · 2025-12-16
Internap Holding LLC
🇺🇸 US ARIN
→
Proton AG
🇨🇭 CH RIPE NCC
72.251.252.0/22inter-RIRTransfer · 2025-10-07
Internap Holding LLC
🇺🇸 US ARIN
→
Stadtwerke Barmstedt Xtra GmbH
🇩🇪 DE RIPE NCC
72.251.192.0/18M&A · 2018-11-29
Voxel Dot Net, Inc.
🇺🇸 US ARIN
→
Internap Corporation
🇺🇸 US ARIN

Date	Resource	From	To	Type
2026-02-17	72.251.192.0/20	Internap Holding LLC 🇺🇸 US ARIN	MTC Technologies 🇺🇸 US ARIN	Transfer
2025-12-16	72.251.208.0/20inter-RIR	Internap Holding LLC 🇺🇸 US ARIN	Proton AG 🇨🇭 CH RIPE NCC	Transfer
2025-10-07	72.251.252.0/22inter-RIR	Internap Holding LLC 🇺🇸 US ARIN	Stadtwerke Barmstedt Xtra GmbH 🇩🇪 DE RIPE NCC	Transfer
2018-11-29	72.251.192.0/18	Voxel Dot Net, Inc. 🇺🇸 US ARIN	Internap Corporation 🇺🇸 US ARIN	M&A

Geolocation

Country🇺🇸United StatesUS

RegionIowa

CityMediapolis

Coordinates41.0077, -91.1630 ↗

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 transfer marketTransfers published by all five RIRs

API

Open

GEThttps://api.ipctl.io/v1/prefix/72.251.192.0/18

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

curl -s "https://api.ipctl.io/v1/prefix/72.251.192.0/18" | jq

External Links

RIPEstat