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Autonomous System

AS15305

Syringa Networks, LLC

Announced IPs
40,704
CIDR prefixes
51
ASN
AS15305

Reputation · trust score

A transparent 0–100 signal. Every entity starts at a neutral baseline of 65; threat-intel blocklists, exposure, reverse-DNS, routing and allocation each adjust it up or down. Higher is more trustworthy.

65/100
Moderate
How this score is built

Experimental · trust-vectors model v1.2.0 — a transparent heuristic, not a definitive verdict. How it works →

Network profile

Source: PeeringDB →
Network type NSP
Traffic level 100-200Gbps
Geographic scope Regional
Traffic ratio Mostly Inbound
Peering policy Open
IRR record AS-SYRINGANETWORKS

Present at 12 internet exchanges: SIX Seattle: MTU 1500, NWAX: Primary Peering VLAN, Any2West, Ninja-IX Phoenix: Production, Any2Denver, Equinix San Jose, Equinix Ashburn, Equinix Dallas, Equinix Chicago, SpokaneIX, …

AS15305 — global IP footprint

Cities where AS15305 has measurable IPv4 allocation. Click any dot to open that city's page. Size and color scale with IP count.

View on 3D globe →

Top CIDR ranges

CIDRIPsPTR DensityOrganizationCountryStateCity
66.232.64.0/20 4.1K
43.1%
Syringa Networks, LLC US Idaho Horseshoe Bend
161.115.208.0/20 4.1K
80.7%
Syringa Networks, LLC US Utah Sandy
173.224.176.0/20 4.1K
53.8%
Syringa Networks, LLC US Idaho Challis
208.98.176.0/20 4.1K
0.0%
Syringa Networks, LLC US Idaho Council
209.141.112.0/20 4.1K
67.7%
Syringa Networks, LLC US Idaho Boise
216.182.96.0/20 4.1K
45.9%
Syringa Networks, LLC US Idaho Glenns Ferry
66.232.72.0/21 2.0K
0.5%
Syringa Networks, LLC US Idaho Cambridge
66.232.88.0/21 2.0K
63.0%
Syringa Networks, LLC US Idaho Weiser
67.215.32.0/21 2.0K
39.5%
Syringa Networks, LLC US Idaho Boise
208.98.160.0/21 2.0K
75.5%
Syringa Networks, LLC US Idaho Boise
216.182.104.0/21 2.0K
40.1%
Syringa Networks, LLC US Idaho Glenns Ferry
64.136.100.0/22 1.0K
94.8%
Syringa Networks, LLC US Utah Salt Lake City
66.232.68.0/22 1.0K
84.4%
Syringa Networks, LLC US Idaho Nampa
66.232.80.0/22 1.0K
0.0%
Syringa Networks, LLC US Idaho Lowman
67.215.36.0/22 1.0K
51.7%
Syringa Networks, LLC US Idaho Meridian
67.215.44.0/22 1.0K
0.0%
Syringa Networks, LLC US Idaho Pocatello
104.245.20.0/22 1.0K
98.9%
Syringa Networks, LLC US Idaho Boise
158.120.248.0/22 1.0K
98.1%
Syringa Networks, LLC US Utah Salt Lake City
204.8.52.0/22 1.0K
92.2%
Syringa Networks, LLC US Utah West Valley City
208.98.168.0/22 1.0K
63.4%
Syringa Networks, LLC US Idaho Malad City
208.98.176.0/22 1.0K
0.0%
Syringa Networks, LLC US Idaho Council
209.25.172.0/22 1.0K
77.8%
Syringa Networks, LLC US Idaho Boise
216.182.96.0/22 1.0K
67.2%
Syringa Networks, LLC US Idaho Salmon
66.232.66.0/23 512
85.5%
Syringa Networks, LLC US Idaho Boise
66.232.88.0/23 512
85.2%
Syringa Networks, LLC US Idaho Weiser
67.215.32.0/23 512
53.9%
Syringa Networks, LLC US Idaho Boise
67.215.42.0/23 512
37.3%
Syringa Networks, LLC US Idaho Terreton
67.215.44.0/23 512
81.1%
Syringa Networks, LLC US Idaho Bellevue
158.120.248.0/23 512
98.0%
Syringa Networks, LLC US Utah Salt Lake City
162.57.146.0/23 512
0.0%
Syringa Networks, LLC US
198.199.152.0/23 512
0.0%
Syringa Networks, LLC US
199.244.14.0/23 512
75.4%
Syringa Networks, LLC US Utah Wellsville
204.99.154.0/23 512
0.2%
Syringa Networks, LLC US Utah Logan
216.182.96.0/23 512
68.2%
Syringa Networks, LLC US Idaho Salmon
216.182.102.0/23 512
34.0%
Syringa Networks, LLC US Utah Sandy
45.33.222.0/24 256
0.0%
Syringa Networks, LLC US
66.232.64.0/24 256
91.8%
Syringa Networks, LLC US Idaho Meridian
66.232.89.0/24 256
85.2%
Syringa Networks, LLC US Idaho Pocatello
66.232.90.0/24 256
85.2%
Syringa Networks, LLC US Idaho Meridian
67.215.35.0/24 256
0.0%
Syringa Networks, LLC US Oregon John Day
67.215.43.0/24 256
74.2%
Syringa Networks, LLC US Idaho Salmon
69.59.31.0/24 256
90.6%
Syringa Networks, LLC US
151.122.232.0/24 256
0.0%
Syringa Networks, LLC US
192.35.255.0/24 256
9.4%
Syringa Networks, LLC US
198.60.192.0/24 256
78.5%
Syringa Networks, LLC US Idaho Caldwell
198.199.151.0/24 256
0.0%
Syringa Networks, LLC US Utah Logan
199.5.221.0/24 256
0.0%
Syringa Networks, LLC US Washington Clarkston
204.10.184.0/24 256
56.6%
Syringa Networks, LLC US Idaho Nampa
204.99.153.0/24 256
0.4%
Syringa Networks, LLC US Utah Logan
205.159.98.0/24 256
0.0%
Syringa Networks, LLC US
206.168.83.0/24 256
0.0%
Syringa Networks, LLC US
216.182.98.0/24 256
66.0%
Syringa Networks, LLC US Utah Richmond
216.182.103.0/24 256
0.4%
Syringa Networks, LLC US Utah Sandy

BGP Announced Prefixes

Live BGP anomalies →

Prefixes AS15305 actually originates in BGP, observed across our RIPE RIS collectors. This live routing view can differ from the registry allocation above.

PrefixAnnouncement samplesLast seen
205.159.98.0/24 7,264 2026-07-14 18:38:15
161.115.208.0/20 6,969 2026-07-23 20:30:45
45.33.222.0/23 6,495 2026-07-23 20:30:45
64.136.100.0/22 6,381 2026-07-23 20:30:45
66.232.64.0/19 6,376 2026-07-23 20:30:45
67.215.32.0/20 6,375 2026-07-23 20:30:45
69.59.31.0/24 6,324 2026-07-23 20:30:45
206.168.83.0/24 6,296 2026-07-23 20:30:45
173.224.176.0/20 6,294 2026-07-23 20:30:45
198.199.151.0/24 6,271 2026-07-23 20:30:45
162.57.146.0/23 6,271 2026-07-23 20:30:45
158.120.248.0/22 6,270 2026-07-23 20:30:45
198.199.152.0/23 6,265 2026-07-23 20:30:45
209.141.112.0/20 6,265 2026-07-23 20:30:45
151.122.232.0/24 6,262 2026-07-23 20:30:45
104.245.20.0/22 6,261 2026-07-23 20:30:45
199.244.14.0/23 6,260 2026-07-23 20:30:45
204.8.52.0/22 6,254 2026-07-23 20:30:45
198.60.192.0/24 6,253 2026-07-23 20:30:45
216.182.96.0/20 6,253 2026-07-23 20:30:45
208.98.128.0/18 6,251 2026-07-23 20:30:45
199.5.221.0/24 6,237 2026-07-23 20:30:45
204.99.153.0/24 6,236 2026-07-23 20:30:45
204.99.154.0/23 6,234 2026-07-23 20:30:45
209.25.172.0/22 6,212 2026-07-23 20:30:45
204.10.184.0/24 6,208 2026-07-23 20:30:45
192.35.255.0/24 5,896 2026-07-23 20:30:46

Frequently Asked Questions

What is AS15305?

AS15305 is an Autonomous System Number assigned to Syringa Networks, LLC. An ASN identifies a network that controls a specific set of IP addresses and determines how traffic is routed across the internet via BGP (Border Gateway Protocol).

How many IP addresses does AS15305 announce?

AS15305 announces 40.7K IPv4 addresses distributed across 51 routed CIDR prefixes. The network is registered in United States.

Who operates AS15305?

AS15305 is operated by Syringa Networks, LLC. The organization is based in United States. You can view all IP ranges and related ASNs on the organization page.

What country is AS15305 registered in?

AS15305 is registered in United States. This indicates where the network operator is headquartered, though the IP addresses it announces may serve users globally.

Last updated: 2026-07-23 20:40:31 UTC
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