Home Prefix Lookup38.4.168.0/21

38.4.168.0/21 - Lastnet Telecom (AS273595)

IPv4ARINannouncedAS273595AS273595 - Lastnet TelecomNo ROA

CIDR

38.4.168.0/21

IP Version

IPv4

Addresses

Mask

/21 (255.255.248.0)

Country

🇧🇷 Brazil

City

BOTAFOGO

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
38.4.168.0/21	AS273595 AS273595 - Lastnet Telecom	No ROA	-	2026-10-23

Related Announcements

1 less-specific, 4 more-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
38.0.0.0/8	AS174 COGENT-174 - Cogent Communications, LLC	No ROA	-	2026-10-23
38.4.168.0/23	AS273595 AS273595 - Lastnet Telecom	No ROA	-	2026-10-23
38.4.170.0/23	AS273595 AS273595 - Lastnet Telecom	No ROA	-	2026-10-23
38.4.172.0/23	AS273595 AS273595 - Lastnet Telecom	No ROA	-	2026-10-23
38.4.174.0/23	AS273595 AS273595 - Lastnet Telecom	No ROA	-	2026-10-23

Transfer History

Registry transfers of 38.4.168.0/21, 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

AS273595

AS273595 - Lastnet Telecom

Related Prefixes

Covering prefix

38.0.0.0/8AS174

More prefixes of AS273595

All prefixes of AS273595 →

Geolocation

Country🇧🇷BrazilBR

CityBOTAFOGO

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/38.4.168.0/21

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

curl -s "https://api.ipctl.io/v1/prefix/38.4.168.0/21" | jq

External Links

RIPEstat