AS8821 — TELEZUG WWZ Telekom AG TELEZUG

Network type: residential

AS8821 announces 9 IPv4 prefixes covering 108,544 addresses and 3 IPv6 prefixes.

About this network

TELEZUG is WWZ Telekom AG, the telecom arm of Wasserwerke Zug — the municipal utility of the Swiss canton of Zug. It is one of Switzerland's larger cable-network operators and a partner in the Quickline association, selling Internet, TV and telephony to households and businesses in Zug and the neighbouring cantons under the long-running DataZug brand.

What it's used for

Residential and business access over a hybrid fibre-coax plant. The reverse DNS is unambiguous: sampled addresses in 82.136.64.0/18 resolve to pub082136064100.dh-hfc.datazug.ch — a dynamic-host (dh) pool on the HFC cable network, with the subscriber's address encoded in the hostname. Another sample lands on hsrp-50-dzpr210-211-zg.datazug.net, an HSRP router-redundancy interface on a Zug aggregation router. Subscriber pools plus the routers that serve them.

Notable

• Roughly 108k IPv4 addresses across only nine prefixes, plus IPv6 — a compact allocation for a network covering several cantons.
• 143 observed BGP neighbours is unusually high for an operator this size. That reflects Swiss peering density and the Quickline partner interconnects rather than a wholesale transit business; the address space itself is eyeball space.

Interesting

A water and electricity utility that became a serious ISP is a distinctly European pattern: the municipal works already owned the trenches, so laying coax — and later fibre — alongside the mains was the cheap move. The datazug.ch domain has carried Zug's Internet since the 1990s, and the AS has been visible in BGP since at least August 2000.

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

Announced prefixes

• 62.171.0.0/17
• 77.245.176.0/20
• 82.136.64.0/18
• 151.248.128.0/17
• 158.181.96.0/19
• 185.42.244.0/22
• 185.244.112.0/22
• 212.4.64.0/19
• 217.194.48.0/20
• 2a01:760::/29
• 2a01:8b80::/29
• 2a03:62a0:4101::/48

Upstream networks

• AS1299 Arelion Sweden AB
• AS15600 Quickline AG
• AS6939 Hurricane Electric LLC
• AS34549 meerfarbig GmbH & Co. KG
• AS24482 SG.GS
• AS48362 Stadtwerke Feldkirch
• AS212024 Marc Schmitt
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS48185 team.blue NV
• AS50300 CustodianDC Limited
• AS50673 Serverius Holding B.V.
• AS293 ESnet
• AS3216 PJSC "Vimpelcom"
• AS12552 GlobalConnect AB
• AS12779 IT.Gate S.p.A.
• AS20766 Association "Gitoyen"
• AS33891 Core-Backbone GmbH
• AS37100 SEACOM Limited
• AS6730 Sunrise GmbH
• AS56655 Gigahost AS
• AS29632 Netassist International EOOD
• AS56662 Marcin Gondek
• AS213241 TECHIT.BE SRL
• AS34927 iFog GmbH
• AS1836 green.ch AG

Downstream networks

• AS35518 sasag Kabelkommunikation AG
• AS41294 Zuger Kantonalbank
• AS12750 SOFTEC AG
• AS202240 Innflow AG
• AS208950 Ezpada s.r.o

Adjacent networks

• AS15600 Quickline AG
• AS1299 Arelion Sweden AB
• AS35518 sasag Kabelkommunikation AG
• AS6939 Hurricane Electric LLC
• AS34549 meerfarbig GmbH & Co. KG
• AS41294 Zuger Kantonalbank
• AS12750 SOFTEC AG
• AS202240 Innflow AG
• AS3333 Reseaux IP Europeens Network Coordination Centre (RIPE NCC)
• AS6730 Sunrise GmbH
• AS20766 Association "Gitoyen"
• AS212024 Marc Schmitt
• AS48185 team.blue NV
• AS50300 CustodianDC Limited
• AS17639 Converge ICT Solutions Inc.
• AS24482 SG.GS
• AS208950 Ezpada s.r.o
• AS50673 Serverius Holding B.V.
• AS29632 Netassist International EOOD
• AS48362 Stadtwerke Feldkirch
• AS37100 SEACOM Limited
• AS12779 IT.Gate S.p.A.
• AS3216 PJSC "Vimpelcom"
• AS33891 Core-Backbone GmbH
• AS12552 GlobalConnect AB

Routing security

• RPKI: 12 valid, 0 invalid and 0 not-found announcements; 13 ROAs.
• ASPA: none published.
• IRR: 100% of announcements registered; 12 route objects.
• Listed in as-sets: AS-GREEN-PEERS, AS-HURRICANEV6, AS-MANDA-AMSIX-PEERS-V4, AS-MANDA-AMSIX-PEERS-V6, AS-MANDA-DECIX-PEERS-V4, AS-MANDA-DECIX-PEERS-V6, AS-TELEZUG, AS-TENET-DE-CIX-PEERS, AS15576:AS-PEERING, AS25091:AS-PEERS, AS29097:AS-HOSTPOINT-SWISSIX-IPV6-PEERS, AS29097:AS-HOSTPOINT-SWISSIX-PEERS, AS42476:AS-SWISSIX-CONNECTED, AS6695:AS-DECIX-FRA-CONNECTED, AS6695:AS-DECIX-FRA-RS, AS6695:AS-DECIX-FRA-RS-V6, AS6777:AS-AMS-IX-RS, AS6777:AS-AMS-IX-RS-V6, AS8508:AS-SASK-UPC-IN, AS8821:AS-WWZ.

Internet exchanges

• DE-CIX Frankfurt — Frankfurt, Germany
• AMS-IX Amsterdam — Amsterdam, Netherlands
• SwissIX — Zurich, Switzerland