Home Prefix Lookup209.85.0.0/17

209.85.0.0/17 - IBM Cloud (AS36351)

IPv4ARINallocatedAS36351SOFTLAYER - IBM CloudNo ROA

CIDR

209.85.0.0/17

IP Version

IPv4

Addresses

32.7K

Mask

/17 (255.255.128.0)

Country

🇺🇸 United States

City

Dallas

RIR

ARIN

Status

allocated

Allocated

2005-12-14

Announced BGP Routes

1 of 1 route

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
209.85.0.0/17	AS36351 SOFTLAYER - IBM Cloud	No ROA	Other IRR	2026-10-12

IRR Route Objects

Origin	Registry	Maintainer	Modified
AS11172	Other IRR	MAINT-AS11172	2023-11-13
AS36351	Other IRR	MAINT-AS36351	2023-11-13

Transfer History

Registry transfers of 209.85.0.0/17, blocks inside it, or blocks containing it.

209.85.0.0/17M&A · 2025-02-28
SoftLayer Technologies Inc.
🇺🇸 US ARIN
→
IBM Cloud
🇺🇸 US ARIN
209.85.0.0/17M&A · 2017-04-11
ThePlanet.com Internet Services, Inc.
🇺🇸 US ARIN
→
SoftLayer Technologies Inc.
🇺🇸 US ARIN

Date	Resource	From	To	Type
2025-02-28	209.85.0.0/17	SoftLayer Technologies Inc. 🇺🇸 US ARIN	IBM Cloud 🇺🇸 US ARIN	M&A
2017-04-11	209.85.0.0/17	ThePlanet.com Internet Services, Inc. 🇺🇸 US ARIN	SoftLayer Technologies Inc. 🇺🇸 US ARIN	M&A

Origin ASN

AS36351

SOFTLAYER - IBM Cloud

Related Prefixes

More prefixes of AS36351

All prefixes of AS36351 →

Geolocation

Country🇺🇸United StatesUS

RegionTexas

CityDallas

Coordinates32.9339, -96.8280 ↗

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/209.85.0.0/17

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

curl -s "https://api.ipctl.io/v1/prefix/209.85.0.0/17" | jq

External Links

RIPEstat