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AS553

AS553 is Universitaet Stuttgart.

Last updated 3 Nov 2026 from DB-IP ASN Lite (2026-11-01) and RIR statistics (4 Nov 2026)

Short answer

AS553 belongs to Universitaet Stuttgart. DB-IP Lite attributes 2,109,696 IPv4 addresses in 37 ranges and 4 IPv6 ranges to it, all or nearly all of the IPv4 space in Germany. The number is registered with RIPE NCC in Germany on 1 Sept 1993.

Facts for AS553
Operator (DB-IP)Universitaet Stuttgart
IPv4 addresses2,109,696
IPv4 ranges37
IPv6 ranges4
RegistryRIPE NCC
Registered1 Sept 1993
Registry countryGermany (DE)

Does it publish a geofeed?

We haven’t checked this network’s registry records for a geofeed yet. The Truth Check looks for one live for any address you test.

Shared addresses (CGNAT)

Universitaet Stuttgart hasn’t been documented as using carrier-grade NAT in a source we could check. To see whether your own connection is behind it, compare your router’s address on the CGNAT check.

IPv6

DB-IP lists 4 IPv6 ranges for AS553, so customers can get IPv6 addresses, which databases place separately from IPv4.

Where its IPv4 space is used, according to DB-IP

DE100%

Share of the network’s IPv4 addresses by DB-IP Country Lite. IP Geolocation by DB-IP.

IP ranges

RangeAs CIDRAddresses
45.90.132.0 – 45.90.135.25545.90.132.0/221,024
129.69.0.0 – 129.69.255.255129.69.0.0/1665,536
129.143.0.0 – 129.143.255.255129.143.0.0/1665,536
129.206.0.0 – 129.206.255.255129.206.0.0/1665,536
132.230.0.0 – 132.230.255.255132.230.0.0/1665,536
134.2.0.0 – 134.2.255.255134.2.0.0/1665,536
134.34.0.0 – 134.34.255.255134.34.0.0/1665,536
134.60.0.0 – 134.60.255.255134.60.0.0/1665,536
134.103.0.0 – 134.103.255.255134.103.0.0/1665,536
134.108.0.0 – 134.108.255.255134.108.0.0/1665,536
134.155.0.0 – 134.155.255.255134.155.0.0/1665,536
141.7.0.0 – 141.7.255.255141.7.0.0/1665,536
141.10.0.0 – 141.10.255.255141.10.0.0/1665,536
141.18.0.0 – 141.19.255.255141.18.0.0/15131,072
141.28.0.0 – 141.28.255.255141.28.0.0/1665,536
141.31.0.0 – 141.31.255.255141.31.0.0/1665,536
141.37.0.0 – 141.37.255.255141.37.0.0/1665,536
141.47.0.0 – 141.47.255.255141.47.0.0/1665,536
141.58.0.0 – 141.59.239.255141.58.0.0/16, 141.59.0.0/17 …126,976
141.59.248.0 – 141.59.255.255141.59.248.0/212,048
141.62.0.0 – 141.62.255.255141.62.0.0/1665,536
141.68.0.0 – 141.70.255.255141.68.0.0/15, 141.70.0.0/16196,608
141.72.0.0 – 141.72.255.255141.72.0.0/1665,536
141.79.0.0 – 141.79.255.255141.79.0.0/1665,536
141.87.0.0 – 141.87.255.255141.87.0.0/1665,536
144.41.0.0 – 144.41.255.255144.41.0.0/1665,536
147.142.0.0 – 147.142.255.255147.142.0.0/1665,536
153.96.83.0 – 153.96.83.255153.96.83.0/24256
161.42.0.0 – 161.42.255.255161.42.0.0/1665,536
178.251.231.0 – 178.251.231.255178.251.231.0/24256
185.134.84.0 – 185.134.87.255185.134.84.0/221,024
192.42.143.0 – 192.42.143.255192.42.143.0/24256
192.52.0.0 – 192.52.50.255192.52.0.0/19, 192.52.32.0/20 …13,056
192.67.208.0 – 192.67.208.255192.67.208.0/24256
192.108.35.0 – 192.108.44.255192.108.35.0/24, 192.108.36.0/22 …2,560
193.196.0.0 – 193.196.31.255193.196.0.0/198,192
193.196.48.0 – 193.197.255.255193.196.48.0/20, 193.196.64.0/18 …118,784
2001:7c0:: – 2001:7c0:230f:ffff:ffff:ffff:ffff:ffff2001:7c0::/35IPv6
2001:7c0:2320:: – 2001:7c7:ffff:ffff:ffff:ffff:ffff:ffff2001:7c0:2320::/43IPv6
2a06:ec00:: – 2a06:ec07:ffff:ffff:ffff:ffff:ffff:ffff2a06:ec00::/29IPv6
2a0e:3c0:: – 2a0e:3c7:ffff:ffff:ffff:ffff:ffff:ffff2a0e:3c0::/29IPv6
Showing 37 of 37 IPv4 and 4 of 4 IPv6 ranges All ranges (CSV)

IP Geolocation by DB-IP, ASN Lite, CC BY 4.0.

Using an address from this network? See which sources agree on where it is.

Sources

  1. DB-IP IP to ASN Lite (CC BY 4.0) · checked 3 Nov 2026
  2. NRO RIR delegated-extended statistics · checked 5 Nov 2026