Home Prefix Lookup66.45.0.0/17

66.45.0.0/17 - BGP Prefix

IPv4not announced RPKI Valid

CIDR

66.45.0.0/17

IP Version

IPv4

Addresses

32.7K

Mask

/17 (255.255.128.0)

Country

🇺🇸 United States

City

Seattle

Status

not announced

Allocated

Announced BGP Routes

0 of 0 routes

RPKI:

IRR:

Swipe sideways to see all columns →

Prefix	Origin AS	RPKI	IRR	Last Seen
This prefix is not announced as a whole. Parts of it are announced as more-specific prefixes, see below.

More-Specific Announcements

69 more-specific announcements

Prefix	Origin AS	RPKI	IRR	Last Seen
66.45.0.0/21	AS16509 AMAZON-02 - Amazon.com, Inc.	Valid	-	2026-10-11
66.45.8.0/24	AS14618 AMAZON-AES - Amazon.com, Inc.	Valid	-	2026-10-11
66.45.9.0/24	AS16636 CWF-ASN-BGP - The Colonial Williamsburg Foundation	Valid	-	2026-10-11
66.45.10.0/24	AS35619 MHS-331-35619 - Amergis Healthcare Staffing, Inc.	No ROA	-	2026-10-11
66.45.11.0/24	AS26168 EXCO-ASN-01 - EXCO Resources, Inc.	No ROA	-	2026-10-11
66.45.12.0/24	AS7381 SRS-6-Z-7381 - BroadbandONE, LLC	No ROA	-	2026-10-11
66.45.13.0/24	AS394490 AATRIX - Aatrix Software, Inc	Valid	-	2026-10-11
66.45.15.0/24	AS7381 SRS-6-Z-7381 - BroadbandONE, LLC	No ROA	-	2026-10-11
66.45.16.0/24	AS7381 SRS-6-Z-7381 - BroadbandONE, LLC	No ROA	-	2026-10-11
66.45.17.0/24	AS203020 HostRoyale HostRoyale Technologies Pvt Ltd	Valid	-	2026-10-11
66.45.18.0/23	AS203020 HostRoyale HostRoyale Technologies Pvt Ltd	Valid	-	2026-10-11
66.45.20.0/24	AS400418 RIO-RANCHO-PUBLIC-SCHOOLS - Rio Rancho Public Schools	Valid	-	2026-10-11
66.45.21.0/24	AS394229 TELOGIKS - Juxto, Inc.	No ROA	-	2026-10-11
66.45.22.0/24	AS16315 MULTITEL - MultiTEL LLC	No ROA	-	2026-10-11
66.45.23.0/24	AS19853 ORANGEHOST - OrangeHost	No ROA	-	2026-10-11
66.45.24.0/24	AS63281 VERMONT-JUDICIARY-01 - Vermont Judiciary	No ROA	-	2026-10-11
66.45.25.0/24	AS7381 SRS-6-Z-7381 - BroadbandONE, LLC	No ROA	-	2026-10-11
66.45.26.0/24	AS40876 CITYOFLARGO-01 - City of Largo	No ROA	-	2026-10-11
66.45.28.0/22	AS7381 SRS-6-Z-7381 - BroadbandONE, LLC	No ROA	-	2026-10-11
66.45.30.0/24	AS394555 APPLIED-SYSTEMS-LAB - APPLIED SYSTEMS, INC	No ROA	-	2026-10-11
66.45.32.0/24	AS53328 RYDIN-ASN-01 - Rydin	No ROA	-	2026-10-11
66.45.33.0/24	AS63182 RAPIDSCALE - RapidScale, Inc	No ROA	-	2026-10-11
66.45.34.0/24	AS53333 ADISTEC-MIA-TMXO - Adistec Corp	No ROA	-	2026-10-11
66.45.35.0/24	AS1611 MABELTEL - Mabel Cooperative Telephone Company	No ROA	-	2026-10-11
66.45.36.0/23	AS7381 SRS-6-Z-7381 - BroadbandONE, LLC	No ROA	-	2026-10-11
66.45.38.0/23	AS203020 HostRoyale HostRoyale Technologies Pvt Ltd	Valid	-	2026-10-11
66.45.40.0/21	AS16509 AMAZON-02 - Amazon.com, Inc.	Valid	-	2026-10-11
66.45.48.0/21	AS16509 AMAZON-02 - Amazon.com, Inc.	Valid	-	2026-10-11
66.45.56.0/23	AS7381 SRS-6-Z-7381 - BroadbandONE, LLC	No ROA	-	2026-10-11
66.45.58.0/24	AS7381 SRS-6-Z-7381 - BroadbandONE, LLC	No ROA	-	2026-10-11
66.45.59.0/24	AS46763 RIEMER-BRAUNSTEIN - Riemer & Braunstein LLP	Valid	-	2026-10-11
66.45.60.0/24	AS7381 SRS-6-Z-7381 - BroadbandONE, LLC	No ROA	-	2026-10-11
66.45.61.0/24	AS203020 HostRoyale HostRoyale Technologies Pvt Ltd	Valid	-	2026-10-11
66.45.62.0/24	AS7381 SRS-6-Z-7381 - BroadbandONE, LLC	No ROA	-	2026-10-11
66.45.63.0/24	AS203020 HostRoyale HostRoyale Technologies Pvt Ltd	Valid	-	2026-10-11
66.45.64.0/24	AS7381 SRS-6-Z-7381 - BroadbandONE, LLC	No ROA	-	2026-10-11
66.45.66.0/24	AS7381 SRS-6-Z-7381 - BroadbandONE, LLC	No ROA	-	2026-10-11
66.45.69.0/24	AS7381 SRS-6-Z-7381 - BroadbandONE, LLC	No ROA	-	2026-10-11
66.45.71.0/24	AS7381 SRS-6-Z-7381 - BroadbandONE, LLC	No ROA	-	2026-10-11
66.45.72.0/24	AS401114 COLUMBIACOUNTYWI - Columbia County	No ROA	-	2026-10-11
66.45.73.0/24	AS40503 AS40503 - Hiram College	No ROA	-	2026-10-11
66.45.74.0/24	AS400946 AMI-PROD-00121 - AMI Entertainment LLC	Valid	-	2026-10-11
66.45.75.0/24	AS19819 BRADYCOM - Brady Communications, LLC	No ROA	-	2026-10-11
66.45.76.0/24	AS136787 PACKETHUBSA-AS-AP PacketHub S.A.	Valid	-	2026-10-11
66.45.77.0/24	AS7381 SRS-6-Z-7381 - BroadbandONE, LLC	No ROA	-	2026-10-11
66.45.78.0/24	AS16509 AMAZON-02 - Amazon.com, Inc.	Valid	-	2026-10-11
66.45.79.0/24	AS7381 SRS-6-Z-7381 - BroadbandONE, LLC	No ROA	-	2026-10-11
66.45.80.0/24	AS14378 XVL - Xenon Ventures, LLC	Valid	-	2026-10-11
66.45.81.0/24	AS14378 XVL - Xenon Ventures, LLC	Valid	-	2026-10-11
66.45.82.0/24	AS14378 XVL - Xenon Ventures, LLC	Valid	-	2026-10-11
66.45.83.0/24	AS14378 XVL - Xenon Ventures, LLC	Valid	-	2026-10-11
66.45.84.0/22	AS7381 SRS-6-Z-7381 - BroadbandONE, LLC	No ROA	-	2026-10-11
66.45.88.0/22	AS7381 SRS-6-Z-7381 - BroadbandONE, LLC	No ROA	-	2026-10-11
66.45.92.0/24	AS8075 MICROSOFT-CORP-MSN-AS-BLOCK - Microsoft Corporation	Valid	-	2026-10-11
66.45.93.0/24	AS33154 DQECOM - DQE Communications LLC	Valid	-	2026-10-11
66.45.94.0/24	AS397459 UPPER-ST-CLAIR-SCHOOL-DISTRICT - Upper St. Clair School District	Valid	-	2026-10-11
66.45.96.0/22	AS7381 SRS-6-Z-7381 - BroadbandONE, LLC	No ROA	-	2026-10-11
66.45.100.0/23	AS7381 SRS-6-Z-7381 - BroadbandONE, LLC	Valid	-	2026-10-11
66.45.100.0/23	AS20183 SUNGARDAS-20183 - BroadbandONE, LLC	Valid	-	2026-10-11
66.45.102.0/24	AS13768 COGECO-PEER1 - Aptum Technologies	No ROA	-	2026-10-11
66.45.103.0/24	AS396982 GOOGLE-CLOUD-PLATFORM - Google LLC	Valid	-	2026-10-11
66.45.105.0/24	AS29838 AMC - Atlantic Metro Communications II, Inc.	No ROA	-	2026-10-11
66.45.112.0/24	AS7381 SRS-6-Z-7381 - BroadbandONE, LLC	No ROA	-	2026-10-11
66.45.113.0/24	AS136787 PACKETHUBSA-AS-AP PacketHub S.A.	Valid	-	2026-10-11
66.45.114.0/23	AS203020 HostRoyale HostRoyale Technologies Pvt Ltd	Valid	-	2026-10-11
66.45.116.0/24	AS401164 EPS - Elizabeth Board of Education	Valid	-	2026-10-11
66.45.117.0/24	AS401164 EPS - Elizabeth Board of Education	Valid	-	2026-10-11
66.45.118.0/24	AS209242 CLOUDFLARESPECTRUM Cloudflare London, LLC	No ROA	-	2026-10-11
66.45.119.0/24	AS19935 CRRS - CRRS-TV	Valid	-	2026-10-11

More Specific Prefixes

Prefix	AS	Country	Status
66.45.0.0/21	AS16509	🇺🇸US	allocated
66.45.8.0/24	AS14618	🇺🇸US	allocated
66.45.9.0/24	AS16636	🇺🇸US	allocated
66.45.10.0/24	AS35619	🇺🇸US	allocated
66.45.11.0/24	AS26168	🇺🇸US	allocated
66.45.12.0/24	AS7381	🇺🇸US	allocated
66.45.13.0/24	AS394490	🇺🇸US	allocated
66.45.14.0/24	AS63281	🇺🇸US	allocated
66.45.15.0/24	AS7381	🇺🇸US	allocated
66.45.16.0/24	AS7381	🇺🇸US	allocated
66.45.17.0/24	AS203020	🇺🇸US	allocated
66.45.18.0/23	AS203020	🇺🇸US	allocated
66.45.18.0/24		🇮🇪IE	assigned
66.45.19.0/24		🇮🇪IE	assigned
66.45.20.0/24	AS400418	🇺🇸US	allocated
66.45.21.0/24	AS394229	🇨🇦CA	allocated
66.45.22.0/24	AS16315	🇺🇸US	allocated
66.45.23.0/24	AS19853	🇺🇸US	allocated
66.45.24.0/24	AS63281	🇺🇸US	allocated
66.45.25.0/24	AS7381	🇺🇸US	allocated
66.45.26.0/23	AS40876	🇺🇸US	allocated
66.45.28.0/22	AS7381	🇺🇸US	allocated
66.45.32.0/24	AS53328	🇺🇸US	allocated
66.45.33.0/24	AS63182		reserved
66.45.34.0/24	AS53333	🇺🇸US	allocated
66.45.35.0/24	AS1611	🇺🇸US	allocated
66.45.36.0/22		🇺🇸US	allocated
66.45.36.0/23	AS7381	🇺🇸US	allocated
66.45.38.0/23	AS203020	🇺🇸US	allocated
66.45.38.0/24		🇮🇪IE	assigned
66.45.39.0/24		🇮🇪IE	assigned
66.45.40.0/21	AS16509	🇺🇸US	allocated
66.45.48.0/21	AS16509	🇺🇸US	allocated
66.45.56.0/23	AS7381	🇺🇸US	allocated
66.45.58.0/24	AS7381	🇺🇸US	allocated
66.45.59.0/24	AS46763	🇺🇸US	allocated
66.45.60.0/24	AS7381	🇺🇸US	allocated
66.45.61.0/24	AS203020	🇺🇸US	allocated
66.45.62.0/24	AS7381	🇺🇸US	allocated
66.45.63.0/24	AS203020	🇺🇸US	allocated
66.45.64.0/21		🇺🇸US	allocated
66.45.72.0/24	AS401114	🇺🇸US	allocated
66.45.73.0/24	AS40503	🇺🇸US	allocated
66.45.74.0/24	AS400946	🇺🇸US	allocated
66.45.75.0/24	AS19819	🇺🇸US	allocated
66.45.76.0/24	AS136787	🇺🇸US	allocated
66.45.76.0/25		🇺🇸US	assigned
66.45.76.128/25		🇺🇸US	assigned
66.45.77.0/24	AS7381	🇺🇸US	allocated
66.45.78.0/24	AS401316	🇺🇸US	allocated
66.45.79.0/24	AS7381	🇺🇸US	allocated
66.45.80.0/22	AS14378	🇺🇸US	allocated
66.45.84.0/22	AS7381	🇺🇸US	allocated
66.45.88.0/22	AS7381	🇺🇸US	allocated
66.45.92.0/24	AS53438	🇺🇸US	allocated
66.45.93.0/24	AS397459	🇺🇸US	allocated
66.45.94.0/24	AS397459	🇺🇸US	allocated
66.45.95.0/24	AS63281	🇺🇸US	allocated
66.45.96.0/22	AS7381	🇺🇸US	allocated
66.45.100.0/23	AS7381	🇺🇸US	allocated
66.45.102.0/24	AS401217	🇺🇸US	allocated
66.45.103.0/24	AS396982	🇺🇸US	allocated
66.45.104.0/21		🇺🇸US	allocated
66.45.112.0/24	AS7381	🇺🇸US	allocated
66.45.113.0/24	AS136787	🇺🇸US	allocated
66.45.113.0/25		🇺🇸US	assigned
66.45.113.128/25		🇺🇸US	assigned
66.45.114.0/23	AS203020	🇺🇸US	allocated
66.45.114.0/24		🇮🇪IE	assigned
66.45.115.0/24		🇮🇪IE	assigned
66.45.116.0/24	AS401164	🇺🇸US	allocated
66.45.117.0/24	AS401164	🇺🇸US	allocated
66.45.118.0/24	AS209242	🇺🇸US	allocated
66.45.119.0/24	AS19935	🇨🇦CA	allocated
66.45.120.0/21	AS35699	🇪🇸ES	allocated

Transfer History

Registry transfers of 66.45.0.0/17, blocks inside it, or blocks containing it.

66.45.38.0/23inter-RIRTransfer · 2026-04-08
BroadbandONE, LLC
🇺🇸 US ARIN
→
Core IP Solutions LLC
🇺🇸 US RIPE NCC
66.45.18.0/23inter-RIRTransfer · 2026-04-08
BroadbandONE, LLC
🇺🇸 US ARIN
→
Core IP Solutions LLC
🇺🇸 US RIPE NCC
66.45.114.0/23inter-RIRTransfer · 2026-04-08
BroadbandONE, LLC
🇺🇸 US ARIN
→
Core IP Solutions LLC
🇺🇸 US RIPE NCC
66.45.63.0/24inter-RIRTransfer · 2026-01-26
BroadbandONE, LLC
🇺🇸 US ARIN
→
Core IP Solutions LLC
🇺🇸 US RIPE NCC
66.45.61.0/24inter-RIRTransfer · 2026-01-26
BroadbandONE, LLC
🇺🇸 US ARIN
→
Core IP Solutions LLC
🇺🇸 US RIPE NCC
66.45.17.0/24inter-RIRTransfer · 2026-01-26
BroadbandONE, LLC
🇺🇸 US ARIN
→
Core IP Solutions LLC
🇺🇸 US RIPE NCC
66.45.76.0/24inter-RIRTransfer · 2026-01-07
BroadbandONE, LLC
🇺🇸 US ARIN
→
Core IP Solutions LLC
🇺🇸 US RIPE NCC
66.45.113.0/24inter-RIRTransfer · 2026-01-07
BroadbandONE, LLC
🇺🇸 US ARIN
→
Core IP Solutions LLC
🇺🇸 US RIPE NCC
66.45.10.0/24M&A · 2025-03-06
Maxim Healthcare Services, Inc.
🇺🇸 US ARIN
→
Amergis Healthcare Staffing, Inc.
🇺🇸 US ARIN
66.45.118.0/24Transfer · 2024-09-26
SunGard Availability Services LP
🇺🇸 US ARIN
→
SavvyMoney, Inc.
🇺🇸 US ARIN

Date	Resource	From	To	Type
2026-04-08	66.45.38.0/23inter-RIR	BroadbandONE, LLC 🇺🇸 US ARIN	Core IP Solutions LLC 🇺🇸 US RIPE NCC	Transfer
2026-04-08	66.45.18.0/23inter-RIR	BroadbandONE, LLC 🇺🇸 US ARIN	Core IP Solutions LLC 🇺🇸 US RIPE NCC	Transfer
2026-04-08	66.45.114.0/23inter-RIR	BroadbandONE, LLC 🇺🇸 US ARIN	Core IP Solutions LLC 🇺🇸 US RIPE NCC	Transfer
2026-01-26	66.45.63.0/24inter-RIR	BroadbandONE, LLC 🇺🇸 US ARIN	Core IP Solutions LLC 🇺🇸 US RIPE NCC	Transfer
2026-01-26	66.45.61.0/24inter-RIR	BroadbandONE, LLC 🇺🇸 US ARIN	Core IP Solutions LLC 🇺🇸 US RIPE NCC	Transfer
2026-01-26	66.45.17.0/24inter-RIR	BroadbandONE, LLC 🇺🇸 US ARIN	Core IP Solutions LLC 🇺🇸 US RIPE NCC	Transfer
2026-01-07	66.45.76.0/24inter-RIR	BroadbandONE, LLC 🇺🇸 US ARIN	Core IP Solutions LLC 🇺🇸 US RIPE NCC	Transfer
2026-01-07	66.45.113.0/24inter-RIR	BroadbandONE, LLC 🇺🇸 US ARIN	Core IP Solutions LLC 🇺🇸 US RIPE NCC	Transfer
2025-03-06	66.45.10.0/24	Maxim Healthcare Services, Inc. 🇺🇸 US ARIN	Amergis Healthcare Staffing, Inc. 🇺🇸 US ARIN	M&A
2024-09-26	66.45.118.0/24	SunGard Availability Services LP 🇺🇸 US ARIN	SavvyMoney, Inc. 🇺🇸 US ARIN	Transfer

View all 67 transfers →

Geolocation

Country🇺🇸United StatesUS

RegionWashington

CitySeattle

Coordinates47.4815, -122.2460 ↗

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 transfer marketTransfers published by all five RIRs

API

Open

GEThttps://api.ipctl.io/v1/prefix/66.45.0.0/17

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

curl -s "https://api.ipctl.io/v1/prefix/66.45.0.0/17" | jq

External Links

RIPEstat