Home Prefix Lookup38.21.120.0/24

38.21.120.0/24 - MAS NET SAS (AS274272)

IPv4ARINannouncedAS274272AS274272 - MAS NET SAS RPKI Valid

CIDR

38.21.120.0/24

IP Version

IPv4

Addresses

256

Mask

/24 (255.255.255.0)

Country

🇨🇴 Colombia

City

ANTIOQUIA

RIR

ARIN

Status

announced

Allocated

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
38.21.120.0/24	AS274272 AS274272 - MAS NET SAS	Valid	ARINOther IRR	2026-10-12

Covering Prefix

1 less-specific announcement

Prefix	Origin AS	RPKI	IRR	Last Seen
38.0.0.0/8	AS174 COGENT-174 - Cogent Communications, LLC	No ROA	-	2026-10-12

RPKI ROAs

Prefix	Origin	Max Length	Trust Anchor
38.21.120.0/24	AS274272	/24	arin

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS274272	ARIN	MNT-COGC	2026-06-15
AS274272	Other IRR	MAINT-AS18678	2026-07-01

Transfer History

Registry transfers of 38.21.120.0/24, blocks inside it, or blocks containing it.

38.0.0.0/8M&A · 2025-09-23
PSINet, Inc.
🇺🇸 US ARIN
→
Cogent Communications
🇺🇸 US ARIN

Date	Resource	From	To	Type
2025-09-23	38.0.0.0/8	PSINet, Inc. 🇺🇸 US ARIN	Cogent Communications 🇺🇸 US ARIN	M&A

Origin ASN

AS274272

AS274272 - MAS NET SAS

Related Prefixes

Covering prefix

38.0.0.0/8AS174

More prefixes of AS274272

2803:c030::/32

All prefixes of AS274272 →

Geolocation

Country🇨🇴ColombiaCO

CityANTIOQUIA

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/38.21.120.0/24

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

curl -s "https://api.ipctl.io/v1/prefix/38.21.120.0/24" | jq

External Links

RIPEstat