Home Prefix Lookup2600::/28

2600::/28 - Cogent Communications (AS174)

IPv6ARINallocatedAS174COGENT-174 - Cogent Communications, LLCNo ROA

CIDR

2600::/28

IP Version

IPv6

Addresses

1267650.6Y

Mask

/28

Country

🇺🇸 United States

City

Cleveland

RIR

ARIN

Status

allocated

Allocated

2006-12-21

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
2600::/28	AS174 COGENT-174 - Cogent Communications, LLC	No ROA	ARIN	2026-10-11

More-Specific Announcements

10 more-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
2600::/29	AS174 COGENT-174 - Cogent Communications, LLC	No ROA	-	2026-10-11
2600:0:1::/48	AS174 COGENT-174 - Cogent Communications, LLC	No ROA	-	2026-10-11
2600:1:601::/48	AS174 COGENT-174 - Cogent Communications, LLC	No ROA	-	2026-10-11
2600:2:c01::/48	AS174 COGENT-174 - Cogent Communications, LLC	No ROA	-	2026-10-11
2600:2:da0::/48	AS174 COGENT-174 - Cogent Communications, LLC	No ROA	-	2026-10-11
2600:2:da1::/48	AS174 COGENT-174 - Cogent Communications, LLC	No ROA	-	2026-10-11
2600:2:da2::/48	AS174 COGENT-174 - Cogent Communications, LLC	No ROA	-	2026-10-11
2600:2:da3::/48	AS174 COGENT-174 - Cogent Communications, LLC	No ROA	-	2026-10-11
2600:3:1::/48	AS395506 KN-DFW-ASN - KODIAK NETWORKS, INC.	No ROA	-	2026-10-11
2600:4:402::/48	AS395506 KN-DFW-ASN - KODIAK NETWORKS, INC.	No ROA	-	2026-10-11

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS174	ARIN	MNT-COGC	2025-12-23
AS1239	ARIN	MNT-COGC	2025-12-23

Transfer History

Registry transfers of 2600::/28, blocks inside it, or blocks containing it.

2600::/28M&A · 2025-12-23
Sprint
🇺🇸 US ARIN
→
Cogent Communications, LLC
🇺🇸 US ARIN

Date	Resource	From	To	Type
2025-12-23	2600::/28	Sprint 🇺🇸 US ARIN	Cogent Communications, LLC 🇺🇸 US ARIN	M&A

Origin ASN

AS174

COGENT-174 - Cogent Communications, LLC

Related Prefixes

More prefixes of AS174

All prefixes of AS174 →

Geolocation

Country🇺🇸United StatesUS

RegionOhio

CityCleveland

Coordinates41.4993, -81.6944 ↗

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/2600::/28

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

curl -s "https://api.ipctl.io/v1/prefix/2600::/28" | jq

External Links

RIPEstat