Data as of Nov 7, 2026
66.173.128.0/17
9 residential-proxy exits · 30 daysWindstream Communications LLC
Residential-proxy exits
Proxy exits
9
0.03% of its addresses · 30 days
Always-on exits
3
33% of its exits
Spread
7 of 128
/24s with at least one exit
Providers
56
selling exits here
Oct 8, 2026 – Nov 6, 2026
Exits seen per day
6.5K observations
- Residential
- Business
/24s with the most always-on exits
| /24 | Always-on exits | Proxy exits | |
|---|---|---|---|
| 66.173.142.0/24 | 1 | 1 | |
| 66.173.158.0/24 | 1 | 1 | |
| 66.173.222.0/24 | 1 | 1 | |
| 66.173.210.0/24 | 0 | 3 | |
| 66.173.199.0/24 | 0 | 1 | |
| 66.173.213.0/24 | 0 | 1 | |
| 66.173.233.0/24 | 0 | 1 |
Proxy providers listing exits
- 2Captcha
- 711Proxy
- Ake.net
- AnyIP
- B2Proxy
- BirdProxies
- BottingTools
- ByteProxies
- Byteful
- CliProxy
- ColaProxy
- DataImpulse
- EnigmaProxy
- Evomi
- FastProxy
- FlashProxy
- FlexyProxies
- FloppyData
- GSocks
- Geonode
- GloryCloud
- GonzoProxy
- IPFly
- IPPeak
- Infatica
- InfiniteProxies
- Kookey
- LightningProxies
- LudaxProxy
- MangoProxy
- MoMoProxy
- NodeProxy
- NovProxy
- NovaProxy
- Novada
- PrivateByte
- Proxiware
- Proxy-Seller
- Proxy4U
- ProxyEmpire
- ProxyRack
- ProxyWing
- Proxyma
- RainProxy
- RapidProxy
- RoamProxy
- RolaProxy
- Shifter
- SwiftProxy
- Thordata
- ThunderProxy
- TrueProxies
- VantageProxies
- VitalExclusive
- VitalProxy
- YumiProxy
Announcements
More specific
Announcements inside
| Prefix | Origin | Type | Holder | RPKI |
|---|---|---|---|---|
| 66.173.220.0/24 since May 2025 | AS32833 | Business | Windstream Communications LLC | |
| 66.173.221.0/24 since Apr 2025 | AS7029 | Residential | Windstream Communications LLC |
Registrations in this block
The registry's network records over the announcement: those covering it, widest first, then every record inside it, under its parent.
| Range | Addresses | Netname | Holder | Type | Created | Abuse contact |
|---|---|---|---|---|---|---|
| 66.173.128.0/17 | 32,768 | CAVTEL-BLK-1 | Windstream Communications LLC (WINDS-6) · US | Direct Allocation | Oct 15, 2003 | abuse@ |
| └ 66.173.128.2/31 | 2 | 66-173-128-2 | unknown | — | — | — |
| └ 66.173.128.6/31 | 2 | 66-173-128-6 | unknown | — | — | — |
| └ 66.173.128.8/29 | 8 | 66-173-128-8 | unknown | — | — | — |
| └ 66.173.128.16/29 | 8 | 66-173-128-16 | unknown | — | — | — |
| └ 66.173.128.24/32 | 1 | 66-173-128-24 | unknown | — | — | — |
| └ 66.173.128.25/32 | 1 | 66-173-128-25 | unknown | — | — | — |
| └ 66.173.128.26/31 | 2 | 66-173-128-26 | unknown | — | — | — |
| └ 66.173.128.28/30 | 4 | 66-173-128-28 | unknown | — | — | — |
| └ 66.173.128.32/31 | 2 | 66-173-128-32 | unknown | — | — | — |
| └ 66.173.128.34/31 | 2 | 66-173-128-34 | unknown | — | — | — |
| └ 66.173.128.36/31 | 2 | 66-173-128-36 | unknown | — | — | — |
| └ 66.173.128.40/29 | 8 | 66-173-128-40 | unknown | — | — | — |
| └ 66.173.128.52/31 | 2 | 66-173-128-52 | unknown | — | — | — |
| └ 66.173.128.58/31 | 2 | 66-173-128-58 | unknown | — | — | — |
| └ 66.173.128.60/30 | 4 | 66-173-128-60 | unknown | — | — | — |
| └ 66.173.128.64/31 | 2 | 66-173-128-64 | unknown | — | — | — |
| └ 66.173.128.66/31 | 2 | 66-173-128-66 | unknown | — | — | — |
| └ 66.173.128.68/32 | 1 | 66-173-128-68 | unknown | — | — | — |
| └ 66.173.128.69/32 | 1 | 66-173-128-69 | unknown | — | — | — |
| └ 66.173.128.70/31 | 2 | 66-173-128-70 | unknown | — | — | — |
| └ 66.173.128.72/30 | 4 | 66-173-128-72 | unknown | — | — | — |
| └ 66.173.128.76/31 | 2 | 66-173-128-76 | unknown | — | — | — |
| └ 66.173.128.80/29 | 8 | 66-173-128-80 | unknown | — | — | — |
| └ 66.173.128.94/32 | 1 | 66-173-128-94 | unknown | — | — | — |
| └ 66.173.128.95/32 | 1 | 66-173-128-95 | unknown | — | — | — |
| └ 66.173.128.96/30 | 4 | 66-173-128-96 | unknown | — | — | — |
| └ 66.173.128.100/30 | 4 | 66-173-128-100 | unknown | — | — | — |
| └ 66.173.128.104/30 | 4 | 66-173-128-104 | unknown | — | — | — |
| └ 66.173.128.108/30 | 4 | 66-173-128-108 | unknown | — | — | — |
| └ 66.173.128.112/31 | 2 | 66-173-128-112 | unknown | — | — | — |
| └ 66.173.128.114/31 | 2 | 66-173-128-114 | unknown | — | — | — |
| └ 66.173.128.116/31 | 2 | 66-173-128-116 | unknown | — | — | — |
| └ 66.173.128.118/31 | 2 | 66-173-128-118 | unknown | — | — | — |
| └ 66.173.128.120/31 | 2 | 66-173-128-120 | unknown | — | — | — |
| └ 66.173.128.122/31 | 2 | 66-173-128-122 | unknown | — | — | — |
| └ 66.173.128.128/31 | 2 | 66-173-128-128 | unknown | — | — | — |
| └ 66.173.128.130/31 | 2 | 66-173-128-130 | unknown | — | — | — |
| └ 66.173.128.132/31 | 2 | 66-173-128-132 | unknown | — | — | — |
| └ 66.173.128.134/31 | 2 | 66-173-128-134 | unknown | — | — | — |
| └ 66.173.128.136/30 | 4 | 66-173-128-136 | unknown | — | — | — |
| └ 66.173.128.140/30 | 4 | 66-173-128-140 | unknown | — | — | — |
| └ 66.173.128.144/28 | 16 | 66-173-128-144 | unknown | — | — | — |
| └ 66.173.128.160/28 | 16 | 66-173-128-160 | unknown | — | — | — |
| └ 66.173.128.176/28 | 16 | 66-173-128-176 | unknown | — | — | — |
| └ 66.173.128.192/28 | 16 | 66-173-128-192 | unknown | — | — | — |
| └ 66.173.128.208/28 | 16 | 66-173-128-208 | unknown | — | — | — |
| └ 66.173.128.224/28 | 16 | 66-173-128-224 | unknown | — | — | — |
| └ 66.173.128.240/28 | 16 | 66-173-128-240 | unknown | — | — | — |
| └ 66.173.129.0/28 | 16 | 66-173-129-0 | unknown | — | — | — |
| └ 66.173.129.16/28 | 16 | 66-173-129-16 | unknown | — | — | — |
| └ 66.173.129.32/28 | 16 | 66-173-129-32 | unknown | — | — | — |
| └ 66.173.129.48/28 | 16 | 66-173-129-48 | unknown | — | — | — |
| └ 66.173.129.64/28 | 16 | 66-173-129-64 | unknown | — | — | — |
| └ 66.173.129.80/28 | 16 | 66-173-129-80 | unknown | — | — | — |
| └ 66.173.129.96/28 | 16 | 66-173-129-96 | unknown | — | — | — |
| └ 66.173.129.112/28 | 16 | 66-173-129-112 | unknown | — | — | — |
| └ 66.173.129.128/28 | 16 | 66-173-129-128 | unknown | — | — | — |
| └ 66.173.129.144/28 | 16 | 66-173-129-144 | unknown | — | — | — |
| └ 66.173.129.160/28 | 16 | 66-173-129-160 | unknown | — | — | — |
| └ 66.173.129.176/28 | 16 | 66-173-129-176 | unknown | — | — | — |
| └ 66.173.129.192/28 | 16 | 66-173-129-192 | unknown | — | — | — |
| └ 66.173.129.208/28 | 16 | 66-173-129-208 | unknown | — | — | — |
| └ 66.173.129.224/28 | 16 | 66-173-129-224 | unknown | — | — | — |
| └ 66.173.129.240/28 | 16 | 66-173-129-240 | unknown | — | — | — |
| └ 66.173.131.0/29 | 8 | HILLELECTRICAL | unknown | — | — | — |
| └ 66.173.131.8/29 | 8 | ADAMSPARNELLA | unknown | — | — | — |
| └ 66.173.131.16/28 | 16 | PATIENTFIRST | unknown | — | — | — |
| └ 66.173.131.112/29 | 8 | ATKINSMAESTRELLOPEDIATRICDENIS | unknown | — | — | — |
| └ 66.173.131.136/29 | 8 | ALANNEWMAN | unknown | — | — | — |
| └ 66.173.131.152/29 | 8 | HUMANRESOURCESINC | unknown | — | — | — |
| └ 66.173.131.200/29 | 8 | HENRICOINTERNISTS | unknown | — | — | — |
| └ 66.173.131.208/29 | 8 | THEATREIVWILLOW | unknown | — | — | — |
| └ 66.173.131.224/29 | 8 | CPAPSUPPLYUSA | unknown | — | — | — |
| └ 66.173.131.232/29 | 8 | ALANCOLEMAN | unknown | — | — | — |
| └ 66.173.132.0/31 | 2 | 66-173-132-0 | unknown | — | — | — |
| └ 66.173.132.2/31 | 2 | 66-173-132-2 | unknown | — | — | — |
| └ 66.173.132.4/31 | 2 | 66-173-132-4 | unknown | — | — | — |
| └ 66.173.132.6/31 | 2 | 66-173-132-6 | unknown | — | — | — |
| └ 66.173.132.16/28 | 16 | 66-173-132-16 | unknown | — | — | — |
| └ 66.173.132.32/31 | 2 | 66-173-132-32 | unknown | — | — | — |
| └ 66.173.132.34/31 | 2 | 66-173-132-34 | unknown | — | — | — |
| └ 66.173.132.36/32 | 1 | 66-173-132-36 | unknown | — | — | — |
| └ 66.173.132.37/32 | 1 | 66-173-132-37 | unknown | — | — | — |
| └ 66.173.132.38/32 | 1 | 66-173-132-38 | unknown | — | — | — |
| └ 66.173.132.40/30 | 4 | 66-173-132-40 | unknown | — | — | — |
| └ 66.173.132.44/31 | 2 | 66-173-132-44 | unknown | — | — | — |
| └ 66.173.132.46/31 | 2 | 66-173-132-46 | unknown | — | — | — |
| └ 66.173.132.48/30 | 4 | 66-173-132-48 | unknown | — | — | — |
| └ 66.173.132.52/31 | 2 | 66-173-132-52 | unknown | — | — | — |
| └ 66.173.132.54/31 | 2 | 66-173-132-54 | unknown | — | — | — |
| └ 66.173.132.56/31 | 2 | 66-173-132-56 | unknown | — | — | — |
| └ 66.173.132.58/31 | 2 | 66-173-132-58 | unknown | — | — | — |
| └ 66.173.132.60/31 | 2 | 66-173-132-60 | unknown | — | — | — |
| └ 66.173.132.62/31 | 2 | 66-173-132-62 | unknown | — | — | — |
| └ 66.173.132.64/31 | 2 | 66-173-132-64 | unknown | — | — | — |
| └ 66.173.132.66/32 | 1 | 66-173-132-66 | unknown | — | — | — |
| └ 66.173.132.67/32 | 1 | 66-173-132-67 | unknown | — | — | — |
| └ 66.173.132.68/31 | 2 | 66-173-132-68 | unknown | — | — | — |
| └ 66.173.132.70/31 | 2 | 66-173-132-70 | unknown | — | — | — |
| └ 66.173.132.72/31 | 2 | 66-173-132-72 | unknown | — | — | — |
| └ 66.173.132.74/31 | 2 | 66-173-132-74 | unknown | — | — | — |
| └ 66.173.132.76/30 | 4 | 66-173-132-76 | unknown | — | — | — |
| └ 66.173.132.80/31 | 2 | 66-173-132-80 | unknown | — | — | — |
| └ 66.173.132.82/31 | 2 | 66-173-132-82 | unknown | — | — | — |
| └ 66.173.132.84/31 | 2 | 66-173-132-84 | unknown | — | — | — |
| └ 66.173.132.86/31 | 2 | 66-173-132-86 | unknown | — | — | — |
| └ 66.173.132.88/31 | 2 | 66-173-132-88 | unknown | — | — | — |
| └ 66.173.132.90/31 | 2 | 66-173-132-90 | unknown | — | — | — |
| └ 66.173.132.92/31 | 2 | 66-173-132-92 | unknown | — | — | — |
| └ 66.173.132.94/31 | 2 | 66-173-132-94 | unknown | — | — | — |
| └ 66.173.132.96/29 | 8 | 66-173-132-96 | unknown | — | — | — |
| └ 66.173.132.112/31 | 2 | 66-173-132-112 | unknown | — | — | — |
| └ 66.173.132.114/31 | 2 | 66-173-132-114 | unknown | — | — | — |
| └ 66.173.132.116/31 | 2 | 66-173-132-116 | unknown | — | — | — |
| └ 66.173.132.120/31 | 2 | 66-173-132-120 | unknown | — | — | — |
| └ 66.173.132.122/31 | 2 | 66-173-132-122 | unknown | — | — | — |
| └ 66.173.132.132/31 | 2 | 66-173-132-132 | unknown | — | — | — |
| └ 66.173.132.134/31 | 2 | 66-173-132-134 | unknown | — | — | — |
| └ 66.173.132.136/29 | 8 | 66-173-132-136 | unknown | — | — | — |
| └ 66.173.132.144/31 | 2 | 66-173-132-144 | unknown | — | — | — |
| └ 66.173.132.146/32 | 1 | 66-173-132-146 | unknown | — | — | — |
| └ 66.173.132.147/32 | 1 | 66-173-132-147 | unknown | — | — | — |
| └ 66.173.132.148/31 | 2 | 66-173-132-148 | unknown | — | — | — |
| └ 66.173.132.150/31 | 2 | 66-173-132-150 | unknown | — | — | — |
| └ 66.173.132.154/31 | 2 | 66-173-132-154 | unknown | — | — | — |
| └ 66.173.132.180/31 | 2 | 66-173-132-180 | unknown | — | — | — |
| └ 66.173.132.182/31 | 2 | 66-173-132-182 | unknown | — | — | — |
| └ 66.173.132.192/31 | 2 | 66-173-132-192 | unknown | — | — | — |
| └ 66.173.132.194/31 | 2 | 66-173-132-194 | unknown | — | — | — |
| └ 66.173.132.196/31 | 2 | 66-173-132-196 | unknown | — | — | — |
| └ 66.173.132.198/31 | 2 | 66-173-132-198 | unknown | — | — | — |
| └ 66.173.132.200/29 | 8 | 66-173-132-200 | unknown | — | — | — |
| └ 66.173.132.208/31 | 2 | 66-173-132-208 | unknown | — | — | — |
| └ 66.173.132.210/31 | 2 | 66-173-132-210 | unknown | — | — | — |
| └ 66.173.132.212/31 | 2 | 66-173-132-212 | unknown | — | — | — |
| └ 66.173.132.214/31 | 2 | 66-173-132-214 | unknown | — | — | — |
| └ 66.173.132.216/29 | 8 | 66-173-132-216 | unknown | — | — | — |
| └ 66.173.132.226/31 | 2 | 66-173-132-226 | unknown | — | — | — |
| └ 66.173.132.228/31 | 2 | 66-173-132-228 | unknown | — | — | — |
| └ 66.173.132.230/31 | 2 | 66-173-132-230 | unknown | — | — | — |
| └ 66.173.132.232/31 | 2 | 66-173-132-232 | unknown | — | — | — |
| └ 66.173.132.234/31 | 2 | 66-173-132-234 | unknown | — | — | — |
| └ 66.173.132.236/30 | 4 | 66-173-132-236 | unknown | — | — | — |
| └ 66.173.132.240/30 | 4 | 66-173-132-240 | unknown | — | — | — |
| └ 66.173.132.248/29 | 8 | 66-173-132-248 | unknown | — | — | — |
| └ 66.173.133.0/31 | 2 | 66-173-133-0 | unknown | — | — | — |
| └ 66.173.133.2/31 | 2 | 66-173-133-2 | unknown | — | — | — |
| └ 66.173.133.4/30 | 4 | 66-173-133-4 | unknown | — | — | — |
| └ 66.173.133.8/31 | 2 | 66-173-133-8 | unknown | — | — | — |
| └ 66.173.133.10/31 | 2 | 66-173-133-10 | unknown | — | — | — |
| └ 66.173.133.12/31 | 2 | 66-173-133-12 | unknown | — | — | — |
| └ 66.173.133.32/29 | 8 | 66-173-133-32 | unknown | — | — | — |
| └ 66.173.133.40/31 | 2 | 66-173-133-40 | unknown | — | — | — |
| └ 66.173.133.42/31 | 2 | 66-173-133-42 | unknown | — | — | — |
| └ 66.173.133.44/30 | 4 | 66-173-133-44 | unknown | — | — | — |
| └ 66.173.133.48/30 | 4 | 66-173-133-48 | unknown | — | — | — |
| └ 66.173.133.52/30 | 4 | 66-173-133-52 | unknown | — | — | — |
| └ 66.173.133.56/31 | 2 | 66-173-133-56 | unknown | — | — | — |
| └ 66.173.133.58/31 | 2 | 66-173-133-58 | unknown | — | — | — |
| └ 66.173.133.60/30 | 4 | 66-173-133-60 | unknown | — | — | — |
| └ 66.173.133.64/30 | 4 | 66-173-133-64 | unknown | — | — | — |
| └ 66.173.133.70/32 | 1 | 66-173-133-70 | unknown | — | — | — |
| └ 66.173.133.71/32 | 1 | 66-173-133-71 | unknown | — | — | — |
| └ 66.173.133.72/30 | 4 | 66-173-133-72 | unknown | — | — | — |
| └ 66.173.133.76/31 | 2 | 66-173-133-76 | unknown | — | — | — |
| └ 66.173.133.78/31 | 2 | 66-173-133-78 | unknown | — | — | — |
| └ 66.173.133.82/31 | 2 | 66-173-133-82 | unknown | — | — | — |
| └ 66.173.133.84/31 | 2 | 66-173-133-84 | unknown | — | — | — |
| └ 66.173.133.86/31 | 2 | 66-173-133-86 | unknown | — | — | — |
| └ 66.173.133.88/31 | 2 | 66-173-133-88 | unknown | — | — | — |
| └ 66.173.133.90/31 | 2 | 66-173-133-90 | unknown | — | — | — |
| └ 66.173.133.92/31 | 2 | 66-173-133-92 | unknown | — | — | — |
| └ 66.173.133.94/31 | 2 | 66-173-133-94 | unknown | — | — | — |
| └ 66.173.133.96/28 | 16 | 66-173-133-96 | unknown | — | — | — |
| └ 66.173.133.112/31 | 2 | 66-173-133-112 | unknown | — | — | — |
| └ 66.173.133.114/31 | 2 | 66-173-133-114 | unknown | — | — | — |
| └ 66.173.133.120/31 | 2 | 66-173-133-120 | unknown | — | — | — |
| └ 66.173.133.122/31 | 2 | 66-173-133-122 | unknown | — | — | — |
| └ 66.173.133.130/31 | 2 | 66-173-133-130 | unknown | — | — | — |
| └ 66.173.133.134/31 | 2 | 66-173-133-134 | unknown | — | — | — |
| └ 66.173.133.136/31 | 2 | 66-173-133-136 | unknown | — | — | — |
| └ 66.173.133.138/31 | 2 | 66-173-133-138 | unknown | — | — | — |
| └ 66.173.133.140/30 | 4 | 66-173-133-140 | unknown | — | — | — |
| └ 66.173.133.144/29 | 8 | 66-173-133-144 | unknown | — | — | — |
| └ 66.173.133.152/31 | 2 | 66-173-133-152 | unknown | — | — | — |
| └ 66.173.133.154/32 | 1 | 66-173-133-154 | unknown | — | — | — |
| └ 66.173.133.155/32 | 1 | 66-173-133-155 | unknown | — | — | — |
| └ 66.173.133.156/30 | 4 | 66-173-133-156 | unknown | — | — | — |
| └ 66.173.133.160/30 | 4 | 66-173-133-160 | unknown | — | — | — |
| └ 66.173.133.164/31 | 2 | 66-173-133-164 | unknown | — | — | — |
| └ 66.173.133.166/32 | 1 | 66-173-133-166 | unknown | — | — | — |
| └ 66.173.133.167/32 | 1 | 66-173-133-167 | unknown | — | — | — |
| └ 66.173.133.168/30 | 4 | 66-173-133-168 | unknown | — | — | — |
| └ 66.173.133.172/31 | 2 | 66-173-133-172 | unknown | — | — | — |
| └ 66.173.133.174/32 | 1 | 66-173-133-174 | unknown | — | — | — |
| └ 66.173.133.175/32 | 1 | 66-173-133-175 | unknown | — | — | — |
| └ 66.173.133.176/31 | 2 | 66-173-133-176 | unknown | — | — | — |
| └ 66.173.133.180/30 | 4 | 66-173-133-180 | unknown | — | — | — |
| └ 66.173.133.184/30 | 4 | 66-173-133-184 | unknown | — | — | — |
| └ 66.173.133.188/31 | 2 | 66-173-133-188 | unknown | — | — | — |
Composition
The types across the prefix's announced space, by addresses.
Announced space
Address share
Announced space
Types across the prefix
32,768 addresses
| Type | Addresses | Share | Ranges | |
|---|---|---|---|---|
| Residential | 21,716 | 66% | 379 | |
| Business | 10,830 | 33% | 1,928 | |
| Hosting | 222 | 0.68% | 4 |
Network & registry
Origin network
AS7029
US
- Name
- Windstream Communications LLC
- Type
- Internet provider
- Registered
- Jul 30, 1996
- Domain
- uniti.com
- Website
- www.uniti.com/
- Industry
- Internet Service Provider (ISP)
- Spamhaus ASN-DROP
- not listed
Routing timeline
Who has announced this prefix
Summary
Routing history
- Pattern
- Stable
- First seen
- May 2005
- Current origin since
- Nov 2014 · 12 yr
- Origin networks
- 2
- Last change of origin
- Nov 2014
Recorded history
History
- Handoffs
- 1
RPKI
Route origin authorizations
| ROA prefix | ASN | Max len | Anchor | Verdict |
|---|---|---|---|---|
| 66.173.128.0/17 | AS7029 | /17 | ARIN | RPKI valid |
IRR
Route objects on the exact prefix
| Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|
| AS7029 | RADB | Windstream Aggregate (AS7029) | MAINT-AS7029 | Jun 18, 2024 |
IRR inside
Route objects inside
| Prefix | Origin | Registry | Description | Maintainer | Modified |
|---|---|---|---|---|---|
| 66.173.130.0/24 | AS32376 | RADB | Proxy fbo Patient First (AS32376) | MAINT-AS7029 | Nov 13, 2023 |
| 66.173.157.0/24 | AS55107 | RADB | Proxy fbo Havas Worldwide (AS55107) | MAINT-AS7029 | Nov 13, 2023 |
Whois
Registration for this announcement
- Range
- 66.
173. 128. 0/ 17 - Netname
- CAVTEL-BLK-1
- Registrant
- Windstream Communications LLC
- Organization
- Windstream Communications LLC (WINDS-6)
- Org address
- 4005 North Rodney Parham Rd, Little Rock, AR, 72212
- Org country
- US
- Type
- Direct Allocation
- Handle
- NET-66-173-128-0-1
- Parent
- NET-66-0-0-0-0
- Created
- Oct 15, 2003
- RIR
- ARIN
- Country
- US
- Delegated
- Oct 15, 2003
- Status
- assigned
Report abuse
Abuse contact
- abuse@
windstream. net - Name
- Windstream Abuse
- Phone
- +1-800-347-1991
- Handle
- WINDS1-ARIN