Home Prefix Lookup2001:4978:1100::/40

2001:4978:1100::/40 - YOUR.ORG (AS19255)

IPv6ARINannouncedAS19255YOUR-ORG-INC-NA - YOUR.ORG, INC.No ROA

CIDR

2001:4978:1100::/40

IP Version

IPv6

Addresses

309.4Y

Mask

/40

Country

🇺🇸 United States

City

Chicago

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
2001:4978:1100::/40	AS19255 YOUR-ORG-INC-NA - YOUR.ORG, INC.	No ROA	-	2026-10-11

Related Announcements

1 less-specific, 1 more-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
2001:4978:1000::/36	AS19255 YOUR-ORG-INC-NA - YOUR.ORG, INC.	No ROA	-	2026-10-11
2001:4978:1102::/48	AS19255 YOUR-ORG-INC-NA - YOUR.ORG, INC.	No ROA	-	2026-10-11

Origin ASN

AS19255

YOUR-ORG-INC-NA - YOUR.ORG, INC.

Related Prefixes

Covering prefix

2001:4978:1000::/36AS19255

More prefixes of AS19255

All prefixes of AS19255 →

Geolocation

Country🇺🇸United StatesUS

RegionIllinois

CityChicago

Coordinates41.8781, -87.6298 ↗

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/2001:4978:1100::/40

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

curl -s "https://api.ipctl.io/v1/prefix/2001:4978:1100::/40" | jq

External Links

RIPEstat