subnet.im

AS1257Tele2 Sverige AB

European UnionRegistryRIPE NCCTypeEyeball

As of 10th November 2026, AS1257 (Tele2 Sverige AB), an access network registered in European Union with RIPE NCC, originates 387 IPv4 prefixes covering 7.5M addresses and 38 IPv6 prefixes. By IPv4 address space that makes it the 95th-largest of the 80,733 networks we see originating IPv4, and the largest of 202 in European Union. It is seen behind 28 upstream networks, most often AS1299 (Arelion (fka. Telia Carrier)) and AS6453 (TATA Communications (America) Inc), and in front of 193 downstream networks. 45% of its announcements have a valid RPKI ROA, and none are RPKI-invalid. 80% of its routes reach at least 90% of full-feed peers, and 2 prefixes are also originated by another network.

At a glance

IPv4 prefixes

387

IPv6 prefixes

38

IPv4 addresses

7.5M

IPv6 /64s

949B

Upstream graph

The networks AS1257 is seen behind, one and two hops out, drawn from real AS paths.

AS1257Toward the internet core
Upstream graph for AS1257: 12 neighbouring networks observed beyond it across 2 levels. The same networks are listed in the tables below.AS1257Tele2 Sverige ABThis networkAS1299Arelion (fka. Tel…AS2914NTT America, Inc.AS6453TATA Communicatio…AS6762Telecom Italia Sp…AS6939Hurricane Electri…AS13030Init7 (Switzerlan…AS16552Tiggee LLCAS49544i3D.net B.VAS215859Hetzner Cloud - S…AS8220COLTAS35280F5 Networks SARLAS20130Depaul University

Networks observed one and two hops upstream of AS1257 in real AS paths. A thicker line means more vantage points saw that adjacency, so weight tracks how well attested it is — not how much traffic it carries. Adjacency is an observation; whether it is a transit purchase or a settlement-free peering is an inference, and is labelled as one wherever we show it.

Neighbouring networks

633

adjacent networks

Upstreams
284%
Peers
41265%
Downstreams
19330%

Networks carrying this one's traffic toward the rest of the internet.

Upstreams of AS1257
NetworkCountryRelationshipPathsVantage pts
AS1299Arelion (fka. Telia Carrier)SEPeer12,19153
AS6453TATA Communications (America) IncUSPeer10,47028
AS2914NTT America, Inc.USPeer10,39234
AS6939Hurricane Electric LLCUSPeer5,01228
AS6762Telecom Italia Sparkle (Seabone)ITPeer4,44818
AS174Cogent Communications, LLCUSPeer4,37733
AS2497Internet Initiative Japan Inc.JPPeer3,8686
AS9002RETN LimitedGBPeer3,58023
AS13030Init7 (Switzerland) Ltd.CHPeer3,0005
AS6667Elisa OyjFIPeer2,1904

Prefixes

All 425

The largest blocks AS1257 originates, widest first.

Largest prefixes originated by AS1257
PrefixAddressesVisibility
83.176.0.0/121M75/76
90.128.0.0/121M75/76
83.248.0.0/13524k74/76
5.240.0.0/14262k76/76
37.196.0.0/14262k76/76
91.128.0.0/14262k76/76
176.68.0.0/14262k76/76
188.148.0.0/14262k76/76
193.12.0.0/14262k76/76
213.100.0.0/14262k76/76

Routing health

How AS1257's own announcements validate against RPKI and how far they propagate. The same measures for the whole routing table are on the routing table in numbers.

RPKI origin validation

  • Valid44.9%191
  • Invalid0.0%0
  • No ROA55.1%234

Propagation

  • Globally propagated90% of full-feed peers or more80.2%341
  • Partially propagated40% to 90%0.5%2
  • Seen by few peersUnder 40%19.3%82

Prefix sizes

IPv4 — 387 prefixes

IPv6 — 38 prefixes

  • /25550B × /642.6%1
  • /26275B × /642.6%1
  • /2934.4B × /647.9%3
  • /324.3B × /6413.2%5
  • /4865.5k × /6473.7%28

Recent changes

Announcements that started or stopped since 12th Oct 2026.

8 announced and 6 withdrawn in all; the most recent are shown.

Routing data derived from RouteViews MRT archives, BGPKIT relationship inference and public registry data.