AS15305 — SYRINGANETWORKS - Syringa Networks, LLC

AS15305 announces 41 IPv4 prefixes covering 33,536 addresses and 2 IPv6 prefixes.

About this network

Sixty-six neighbours, customer telephone companies numbered in the netnames, and one reverse name pointing at the wrong address.

What it's used for

• A regional carrier. Forty-one IPv4 prefixes and two IPv6 prefixes announced from the United States, thirty-three thousand addresses in total, across sixty-six observed neighbours.

Notable

• One sampled reverse name encodes an address in a completely different block from the one that answered, so the record and the address disagree.
• Customer blocks are registered to rural telephone companies under netnames built from a three letter prefix, a five digit zero padded customer number such as 00328 or 00238, and the address.
• The carrier's own netnames come in three forms: the full company name, the same with the address appended, and SYRI, four letters.
• Most registrant fields list the company plus a hostmaster, a network operations centre and an abuse desk, the most complete contact set in this range.
• A second domain appears in reverse DNS for the wireless side of the business.

Interesting

• The mismatched reverse name is the kind of error that survives for years. It resolves, it looks plausible, and anyone reading logs will place that address in the wrong part of the network.
• Numbering customers in the netname turns the registry into a billing index. It is efficient and it quietly publishes how many customers came before this one.
• Sixty-six neighbours on thirty-three thousand addresses is a carrier whose business is reaching places other networks do not, rather than carrying volume.

This description is AI-generated, best-effort context — not authoritative, and provided without any guarantee of accuracy.

Announced prefixes

• 45.33.222.0/24
• 64.136.100.0/22
• 66.232.64.0/24
• 66.232.66.0/23
• 66.232.68.0/22
• 66.232.72.0/21
• 66.232.80.0/22
• 66.232.89.0/24
• 66.232.90.0/24
• 67.215.32.0/23
• 67.215.35.0/24
• 67.215.36.0/22
• 67.215.44.0/23
• 69.59.31.0/24
• 104.245.20.0/22
• 151.122.232.0/24
• 158.120.248.0/23
• 161.115.208.0/20
• 162.57.146.0/23
• 173.224.176.0/21
• 173.224.184.0/22
• 192.35.255.0/24
• 198.60.192.0/24
• 198.199.151.0/24
• 198.199.152.0/23
• 199.5.221.0/24
• 199.244.14.0/23
• 204.8.52.0/22
• 204.10.184.0/24
• 204.99.153.0/24
• 204.99.154.0/23
• 206.168.83.0/24
• 208.98.164.0/22
• 208.98.168.0/23
• 208.98.171.0/24
• 208.98.176.0/22
• 209.25.172.0/22
• 209.141.112.0/20
• 216.182.98.0/24
• 216.182.103.0/24
• 216.182.104.0/21
• 2605:5800::/32
• 2606:6580::/34

Upstream networks

• AS1299 Arelion Sweden AB
• AS174 Cogent Communications, LLC
• AS6939 Hurricane Electric LLC
• AS14907 Wikimedia Foundation Inc.
• AS53767 iCastCenter
• AS3303 Swisscom (Schweiz) AG

Downstream networks

• AS26223 Silver Star Communications
• AS19218 Midvale Telephone Exchange, Incorporated
• AS54847 Custer Telephone Cooperative, Inc.
• AS30530 Farmers Mutual Telephone Company
• AS32922 ATC Communications
• AS397268 Cambridge Telephone
• AS397740 Mudlake Telephone
• AS17380 Project Mutual Telephone Cooperative Association, Inc.
• AS20295 Filer Mutual Telephone Company
• AS395107 RTI
• AS33284 LBiSat, LLC
• AS397285 Cambridge Telephone
• AS395846 Direct Communications Rockland, Inc
• AS54885 State of Idaho
• AS19546 R. C. Willey Home Furnishings
• AS16403 Boise Cascade Corporation
• AS395344 Ivanti, Inc.
• AS14971 Pine Telephone System, Inc.
• AS46528 J.R. Simplot Company
• AS19045 Direct Communications Cedar Valley, LLC
• AS30663 ISpeed Wireless Inc.,
• AS393898 AlwaysON Internet
• AS17150 America First Credit Union
• AS46133 Elite Telecom, Inc
• AS16957 Idaho Power Company

Adjacent networks

• AS1299 Arelion Sweden AB
• AS174 Cogent Communications, LLC
• AS6939 Hurricane Electric LLC
• AS26223 Silver Star Communications
• AS19218 Midvale Telephone Exchange, Incorporated
• AS54847 Custer Telephone Cooperative, Inc.
• AS30530 Farmers Mutual Telephone Company
• AS32922 ATC Communications
• AS17380 Project Mutual Telephone Cooperative Association, Inc.
• AS397268 Cambridge Telephone
• AS397740 Mudlake Telephone
• AS53767 iCastCenter
• AS14907 Wikimedia Foundation Inc.
• AS397285 Cambridge Telephone
• AS395846 Direct Communications Rockland, Inc
• AS20295 Filer Mutual Telephone Company
• AS395107 RTI
• AS33284 LBiSat, LLC
• AS3303 Swisscom (Schweiz) AG
• AS54885 State of Idaho
• AS19546 R. C. Willey Home Furnishings
• AS30663 ISpeed Wireless Inc.,
• AS16403 Boise Cascade Corporation
• AS395344 Ivanti, Inc.
• AS14971 Pine Telephone System, Inc.

Routing security

• RPKI: 2 valid, 0 invalid and 25 not-found announcements; 3 ROAs.
• ASPA: none published.
• IRR: 93% of announcements registered; 52 route objects.
• Listed in as-sets: AS-ANY2-RS, AS-HURRICANEV6, AS-SYRINGANETWORKS, AS-VC3-BOI-CARRIERS, AS-VC3-BOI-CARRIERS, AS-WAVE-CUSTOMERS, AS3303:AS-SWCMPEERS, AS46528:AS-PEERS.

Internet exchanges

• Equinix Internet Exchange Ashburn — Ashburn, United States
• Coresite - Any2 West — Los Angeles, United States
• Seattle Internet Exchange — Seattle, United States
• Any2 California — Los Angeles, United States
• Equinix Internet Exchange Chicago — Chicago, United States
• Equinix Internet Exchange Dallas — Dallas, United States
• Equinix Internet Exchange San Jose (Bay Area) — San Jose, United States
• Northwest Access Exchange — Portland, United States
• Ninja-IX Phoenix — Phoenix, United States
• Salt Lake Internet Exchange — Salt Lake City, United States