AS overview
Test target: 2a00:1be0:85:69:40:: · micso.it · address space: PA · prefixes announced: 1
prefix(es): 2a00:1be0::/32
Targets & per-vantage-point probe results (1 target(s) across 7 vantage point(s))
Source codes (hover any badge for full description): CUR=curated · NS/SOA/MX=DNS records · SPF=SPF TXT · DRV=holder-derived (www, ns1, mail, gw, …) · ATL=RIPE Atlas · PDB=PeeringDB · WHOIS=RIPE whois · RDAP=RIPE RDAP · HIT=IPv6 Hitlist · RTR=in-prefix path hop (router) · PRB=static prefix probe · SYN=synthetic prefix::1 fallback
| Target IP / hostname | Source | SRB host (SOX, Belgrade) | DE host (Berlin) | DE host (Düsseldorf) | NL host (go6lab) | ITA host (Karsolink) | SLO host (6connect) | SLO host (T-2) | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ping | 1500B | :80 | :443 | reached | ||
2a00:1be0:85:69:40::micso.it | drv | ✓ | ✓ | open | open | - | ✓ | ✓ | open | open | - | ✓ | ✓ | open | open | - | ✓ | ✓ | open | open | - | ✓ | ✓ | open | open | - | ✓ | ✓ | open | open | - | ✓ | ✓ | open | open | - |
MIX-IT / NAMEX / MINAP / TOP-IX / VSIX / EQUINIX-MILAN / BGPX-ROME / NAMEX-BARI / PCIX / DECIX-PALERMO peering
Not an MIX-IT / NAMEX / MINAP / TOP-IX / VSIX / EQUINIX-MILAN / BGPX-ROME / NAMEX-BARI / PCIX / DECIX-PALERMO member, but our traceroute path crosses the MIX-IT / NAMEX / MINAP / TOP-IX / VSIX / EQUINIX-MILAN / BGPX-ROME / NAMEX-BARI / PCIX / DECIX-PALERMO LAN from ITA host (Karsolink) - reached via an MIX-IT / NAMEX / MINAP / TOP-IX / VSIX / EQUINIX-MILAN / BGPX-ROME / NAMEX-BARI / PCIX / DECIX-PALERMO-resident transit operator.
RPKI & ASPA
1 of 1 prefix(es) covered by a valid ROA.
| Prefix | RPKI state | Reason | Covering VRP(s) |
|---|---|---|---|
2a00:1be0::/32 | ✓ valid | matched VRP (correct origin, length within maxLength) | AS21034 /32 maxLen 32 (ripe) |
ASPA: this AS has published an ASPA record listing 3 upstream provider(s) that are authorized to propagate routes from it: AS3269, AS8928, AS12874. Routes from this AS that arrive via any other upstream are considered ASPA-invalid by validators that enforce ASPA.
Random-IP probe (yarrp) into the AS' prefixes
At least one router inside AS21034's announced prefix replied during the random-target probe. Hop(s): 2a00:1be0:0:97::257. These are candidate targets for direct testing.
ICMPv6 Type 2 (Packet Too Big) acceptance - active test
Type 2 honored. Forged ICMPv6 PTB (MTU=1280) was accepted by the destination's stack: the next 1500-byte Echo Reply arrived split into 2 fragments via the IPv6 Fragment Header.
method: ICMPv6 Echo + forged PTB, tested 2026-09-23T12:00:34Z
Where the path divergence is
Per-vantage probe + verdict (headline):
- belgrade: probe
icmp6-echo→ verdicthonored - berlin: probe
icmp6-echo→ verdicthonored - duseldorf: probe
icmp6-echo→ verdicthonored - go6lab: probe
icmp6-echo→ verdicthonored - karsolink: probe
icmp6-echo→ verdicthonored - odin: probe
icmp6-echo→ verdicthonored - t2: probe
icmp6-echo→ verdicthonored
Full per-method matrix (all four methods run at each vantage):
| vantage | icmp6-echo | dns-tcp | tls | http |
|---|---|---|---|---|
| belgrade | honored | no_tcp | partial | inconclusive |
| berlin | honored | no_tcp | not_honored | inconclusive |
| duseldorf | honored | no_tcp | partial | inconclusive |
| go6lab | honored | no_tcp | not_honored | inconclusive |
| karsolink | honored | no_tcp | partial | inconclusive |
| odin | honored | no_tcp | partial | inconclusive |
| t2 | honored | no_tcp | not_honored | inconclusive |
✓ All vantages agree on method(s): icmp6-echo - the headline-method spread above is dispatcher noise, not a real Type 2 disagreement.
These vantage-level disagreements are rooted somewhere in the forward paths. Joining each per-vantage traceroute against the IP→AS lookup from our global yarrp mesh, the first hop where the paths land in different ASes is the most likely site of the offending filter / unreachable AS / Type 2 drop.
Suspect transit ASes (ranked by how often they appear at the divergence point on the path of the worse-classifying vantage): AS21034, AS12874, AS50673.
- From berlin (open/Type-2=honored) the path enters AS21034 at hop 19; from duseldorf (open/Type-2=honored) the same hop is in an opaque hop. Last common AS: AS21034. The disagreement is most likely rooted in one of those two transit ASes.
- From berlin (open/Type-2=honored) the path enters AS21034 at hop 19; from go6lab (open/Type-2=honored) the same hop is in an opaque hop. Last common AS: AS21034. The disagreement is most likely rooted in one of those two transit ASes.
- From berlin (open/Type-2=honored) the path enters AS21034 at hop 19; from karsolink (open/Type-2=honored) the same hop is in an opaque hop. Last common AS: AS21034. The disagreement is most likely rooted in one of those two transit ASes.
- From berlin (open/Type-2=honored) the path enters AS21034 at hop 19; from odin (open/Type-2=honored) the same hop is in an opaque hop. Last common AS: AS21034. The disagreement is most likely rooted in one of those two transit ASes.
- From berlin (open/Type-2=honored) the path enters AS21034 at hop 19; from t2 (open/Type-2=honored) the same hop is in an opaque hop. Last common AS: AS21034. The disagreement is most likely rooted in one of those two transit ASes.
- From duseldorf (open/Type-2=honored) the path enters AS12874 at hop 9; from go6lab (open/Type-2=honored) the same hop is in AS21034. Last common AS: AS21034. The disagreement is most likely rooted in one of those two transit ASes.
- From duseldorf (open/Type-2=honored) the path enters AS12874 at hop 8; from karsolink (open/Type-2=honored) the same hop is in AS21034. Last common AS: AS21034. The disagreement is most likely rooted in one of those two transit ASes.
- From duseldorf (open/Type-2=honored) the path enters AS12874 at hop 9; from odin (open/Type-2=honored) the same hop is in an opaque hop. Last common AS: AS21034. The disagreement is most likely rooted in one of those two transit ASes.
- From go6lab (open/Type-2=honored) the path enters AS12874 at hop 8; from karsolink (open/Type-2=honored) the same hop is in AS21034. Last common AS: AS21034. The disagreement is most likely rooted in one of those two transit ASes.
- From go6lab (open/Type-2=honored) the path enters AS50673 at hop 3; from odin (open/Type-2=honored) the same hop is in AS56635. Last common AS: AS21034. The disagreement is most likely rooted in one of those two transit ASes.
- From go6lab (open/Type-2=honored) the path enters AS50673 at hop 4; from t2 (open/Type-2=honored) the same hop is in AS51988. Last common AS: AS21034. The disagreement is most likely rooted in one of those two transit ASes.
- From karsolink (open/Type-2=honored) the path enters AS12874 at hop 5; from odin (open/Type-2=honored) the same hop is in AS3303. Last common AS: AS21034. The disagreement is most likely rooted in one of those two transit ASes.
- From karsolink (open/Type-2=honored) the path enters AS12874 at hop 5; from t2 (open/Type-2=honored) the same hop is in AS3303. Last common AS: AS21034. The disagreement is most likely rooted in one of those two transit ASes.
- From odin (open/Type-2=honored) the path enters an opaque hop at hop 9; from t2 (open/Type-2=honored) the same hop is in AS12874. Last common AS: AS21034. The disagreement is most likely rooted in one of those two transit ASes.
Diagnosis is path-level, not packet-level: it tells you which transit AS is the prime suspect, not exactly which firewall rule is to blame. Use the tracepath6 output below (when available) for per-hop PMTU evidence on the same path.
✨ Diagnostic interpretation
Multi-vantage path map
Every hop of all vantages’ traceroutes toward the target, drawn left→right, grouped into per-AS bubbles (a hop seen from several vantages is one shared bubble, so converging paths merge). It answers two questions per vantage — shown on each source bubble as echo ✓/⚠/✗ · trace ✓/✗: did the destination reply to ICMPv6 Echo (✓ honored, ⚠ replied but PTB not honored, ✗ no reply), and did the traceroute reach it. A line to the target is drawn only when that vantage got an echo reply — solid if the PTB was honored, dashed if not (reachable but a broken-PMTUD / RFC 4890 violation). The path depth still shows how far the traceroute itself got, and runs of unanswered (* *) hops collapse into one dashed “silent” bubble. Open full size ↗
- ● SRB host (SOX, Belgrade)
- ● DE host (Berlin)
- ● DE host (Düsseldorf)
- ● NL host (go6lab)
- ● ITA host (Karsolink)
- ● SLO host (6connect)
- ● SLO host (T-2)
- ── solid line = echo reply, PTB honored (clean reach)
- — — dashed line = echo reply but PTB not honored (RFC 4890 violation)
- no line = no echo reply (never reached)
- ◉ target: green = clean, amber = reachable-but-violation / unreachable
- ⚠ suspected drop AS
- ⋯ silent (unanswered) hops
- ● IXP hop
From SRB host (SOX, Belgrade) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | 2a09:ab81::1 | 0.2ms | 0%* | AS60733 | PERKE-NET - ZORAN PEROVIC trading as Agencija Perke.NET, RS |
| 2 | sox-pn.sox.rs 2001:7f8:1e:8::3a | 0.4ms | 0% | AS13004 | SOX - Serbian Open Exchange DOO, RS |
| 3 | 2001:7f8:1e:8::3d | 0.3ms | 0% | AS13004 | SOX - Serbian Open Exchange DOO, RS |
| 4 | 2001:67c:128c::699 | 17.6ms | 0% | - | NA |
| 5 | * | - | 0% | - | |
| 6 | * | - | - | - | |
| 7 | * | - | - | - | |
| 8 | * | - | - | - | |
| 9 | * | - | - | - | |
| 10 | * | - | - | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - | |
| 19 | * | - | - | - | |
| 20 | * | - | - | - | |
| 21 | * | - | - | - | |
| 22 | * | - | - | - | |
| 23 | * | - | - | - | |
| 24 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.020ms pmtu 1500
1: _gateway 0.547ms
1: _gateway 0.363ms
2: sox-pn.sox.rs 0.418ms
3: 2001:7f8:1e:8::3d 0.365ms asymm 2
4: 2001:67c:128c::699 20.129ms
5: no reply
6: no reply
7: no reply
8: no reply
9: no reply
10: no reply
11: no reply
12: no reply
13: no reply
14: no reply
15: no reply
16: no reply
17: no reply
18: no reply
19: no reply
20: no reply
21: no reply
22: no reply
23: no reply
24: no reply
Too many hops: pmtu 1500
Resume: pmtu 1500 From DE host (Berlin) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | * | - | 0%* | - | |
| 2 | ae0-2453.cr10.ber01.lwlcom.net 2a06:d1c0::dead:beef:1c02 | 0.7ms | 0%* | AS59645 | WYBT-NET - Tobias Fiebig, DE |
| 3 | ae0-10.cr10.ber03.lwlcom.net 2a00:c380:b200:230::220 | 0.5ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 4 | ae0-15.cr11.dtm01.lwlcom.net 2a00:c380:b200:230::5 | 8.4ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 5 | ae0-20.cr10.dtm01.lwlcom.net 2a00:c380:b200:230::92 | 8.3ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 6 | ae0-20.cr10.dus04.lwlcom.net 2a00:c380:b200:230::139 | 8.6ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 7 | ae0-10.cr10.dus01.lwlcom.net 2a00:c380:b200:230::187 | 8.3ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 8 | ae0-90.cr11.dus01.lwlcom.net 2a00:c380:b200:230::222 | 8.6ms | 0% | AS50629 | LWLCOM - LWLcom GmbH, DE |
| 9 | as3303.dusseldorf.megaport.com 2001:7f8:8::ce7:0:1 | 17.3ms | 0% | - | NA |
| 10 | i00ffm-005-loo179.bb.ip-plus.net 2001:918:100:3b::1 | 17.3ms | 0% | AS3303 | SWISSCOM - Swisscom (Schweiz) AG, CH |
| 11 | i62bsw-015-loo179.ip6.ip-plus.net 2001:918:100:2::1 | 17.7ms | 0% | AS3303 | SWISSCOM - Swisscom (Schweiz) AG, CH |
| 12 | i73olt-005-loo179.bb.ip-plus.net 2001:918:100:67::1 | 17.6ms | 0% | AS3303 | SWISSCOM - Swisscom (Schweiz) AG, CH |
| 13 | i71lzf-015-loo179.bb.ip-plus.net 2001:918:100:1a::1 | 17.9ms | 0% | AS3303 | SWISSCOM - Swisscom (Schweiz) AG, CH |
| 14 | i63bel-005-loo179.bb.ip-plus.net 2001:918:100:47::1 | 19.8ms | 0% | AS3303 | SWISSCOM - Swisscom (Schweiz) AG, CH |
| 15 | * | - | 70% | - | |
| 16 | 2001:b00:1:1:1::1af | 22.7ms | 0% | AS12874 | FASTWEB - Fastweb SpA, IT |
| 17 | 2001:b00:1:1:3::d7 | 30.9ms | 0% | AS12874 | FASTWEB - Fastweb SpA, IT |
| 18 | 2001:b00:1:1:2::db | 32.1ms | 20% | AS12874 | FASTWEB - Fastweb SpA, IT |
| 19 | 2a00:1be0:0:97::257 | 38.7ms | 0% | AS21034 | MICSO-SRL-AS - Micso Information Technology Srl, IT |
| 20 | * | - | 0% | - | |
| 21 | * | - | 0% | - | |
| 22 | * | - | - | - | |
| 23 | * | - | - | - | |
| 24 | * | - | - | - |
Rate-limited ICMPv6: hop 15, hop 18 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.025ms pmtu 1500
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.552ms
1: xe-0-0-13-178.gw01.ber01.as59645.net 0.491ms
2: ae0-2453.cr10.ber01.lwlcom.net 1.027ms
3: ae0-10.cr10.ber03.lwlcom.net 1.106ms
4: ae0-15.cr11.dtm01.lwlcom.net 8.990ms asymm 5
5: ae0-20.cr10.dtm01.lwlcom.net 8.685ms asymm 4
6: ae0-20.cr10.dus04.lwlcom.net 9.235ms asymm 5
7: ae0-10.cr10.dus01.lwlcom.net 8.907ms asymm 4
8: ae0-90.cr11.dus01.lwlcom.net 9.005ms asymm 5
9: as3303.dusseldorf.megaport.com 17.762ms asymm 13
10: i00ffm-005-loo179.bb.ip-plus.net 17.663ms asymm 12
11: i62bsw-015-loo179.ip6.ip-plus.net 17.755ms asymm 14
12: i73olt-005-loo179.bb.ip-plus.net 17.586ms
13: i71lzf-015-loo179.bb.ip-plus.net 17.936ms asymm 12
14: i63bel-005-loo179.bb.ip-plus.net 19.958ms asymm 13
15: as3303-as12874-bel-001-ser0.ce.ip-plus.net 295.666ms asymm 9
16: 2001:b00:1:1:1::1af 23.017ms asymm 8
17: 2001:b00:1:1:2::ab 38.040ms asymm 9
18: 2001:b00:1:1:2::db 36.114ms asymm 10
19: 2a00:1be0:0:97::257 35.707ms asymm 11
20: no reply
21: no reply
22: no reply
23: no reply
24: no reply
Too many hops: pmtu 1500
Resume: pmtu 1500 From DE host (Düsseldorf) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | * | - | 0%* | - | |
| 2 | eth1-0-12-h5594.edge5-dus1.bb.wiit.network 2001:4ba0:92f4:3::1 | 24.2ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 3 | lag13.agr3-dus3.bb.wiit.network 2001:4ba0:ffe9:7d::1 | 645.5ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 4 | lag30.core3-dus1.bb.wiit.network 2001:4ba0:ffe9:109::2 | 0.2ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 5 | lag8.core1-dus-ix.bb.wiit.network 2001:4ba0:ffe9:8::2 | 0.4ms | 0% | AS24961 | MYLOC-AS - WIIT AG, DE |
| 6 | * | - | 90% | - | |
| 7 | 2001:b00:1:1:1::1b3 | 17.3ms | 0% | AS12874 | FASTWEB - Fastweb SpA, IT |
| 8 | 2001:b00:1:1:2::ab | 25.3ms | 0% | AS12874 | FASTWEB - Fastweb SpA, IT |
| 9 | 2001:b00:1:1:2::d9 | 32.7ms | 0% | AS12874 | FASTWEB - Fastweb SpA, IT |
| 10 | 2a00:1be0:0:97::257 | 33.5ms | 0% | AS21034 | MICSO-SRL-AS - Micso Information Technology Srl, IT |
| 11 | * | - | 0% | - | |
| 12 | * | - | 0% | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - | |
| 19 | * | - | - | - | |
| 20 | * | - | - | - | |
| 21 | * | - | - | - | |
| 22 | * | - | - | - | |
| 23 | * | - | - | - | |
| 24 | * | - | - | - |
Rate-limited ICMPv6: hop 6 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.009ms pmtu 1500
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.172ms
1: xe-0-0-12-142.gw01.dus01.as59645.net 0.166ms
2: eth1-0-12-h5594.edge5-dus1.bb.wiit.network 13.998ms
3: no reply
4: lag30.core3-dus1.bb.wiit.network 0.393ms
5: lag2.core1-dus-ix.bb.wiit.network 0.466ms
6: no reply
7: 2001:b00:1:1:1::1b3 17.372ms
8: 2001:b00:1:1:2::ab 29.014ms
9: 2001:b00:1:1:2::db 32.933ms
10: 2a00:1be0:0:97::257 33.373ms
11: no reply
12: no reply
13: no reply
14: no reply
15: no reply
16: no reply
17: no reply
18: no reply
19: no reply
20: no reply
21: no reply
22: no reply
23: no reply
24: no reply
Too many hops: pmtu 1500
Resume: pmtu 1500 From NL host (go6lab) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | 2a00:8642:42::2 | 0.4ms | 0% | AS203993 | GNA-DC1-AS - S.J.M. Steffann, NL |
| 2 | * | - | 0%* | - | |
| 3 | 2a00:1ca8:1::194 | 4.2ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 4 | 2a03:3f40::10:33 | 8.4ms | 0% | AS50673 | Serverius-as - Serverius Holding B.V., NL |
| 5 | 2001:7f8:1::a501:2874:1 | 28.2ms | 40% | - | NA |
| 6 | 2001:b00:1:1:3::131 | 23.0ms | 0% | AS12874 | FASTWEB - Fastweb SpA, IT |
| 7 | 2001:b00:1:1:3::d7 | 33.0ms | 0% | AS12874 | FASTWEB - Fastweb SpA, IT |
| 8 | 2001:b00:1:1:2::d9 | 93.3ms | 10% | AS12874 | FASTWEB - Fastweb SpA, IT |
| 9 | 2a00:1be0:0:97::257 | 456.9ms | 0% | AS21034 | MICSO-SRL-AS - Micso Information Technology Srl, IT |
| 10 | * | - | 0% | - | |
| 11 | * | - | 0% | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - | |
| 19 | * | - | - | - | |
| 20 | * | - | - | - | |
| 21 | * | - | - | - | |
| 22 | * | - | - | - | |
| 23 | * | - | - | - | |
| 24 | * | - | - | - |
Rate-limited ICMPv6: hop 5, hop 8 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.059ms pmtu 1500
1: 2a00:8642:42::2 3.985ms
1: 2a00:8642:42::2 1.547ms
2: gw.friends.steffann.nl 3.223ms
3: 2a00:1ca8:1::194 4.822ms
4: 2a03:3f40::10:33 5.011ms
5: no reply
6: 2001:b00:1:1:3::131 23.686ms
7: 2001:b00:1:1:2::ab 35.863ms
8: no reply
9: 2a00:1be0:0:97::257 42.898ms
10: no reply
11: no reply
12: no reply
13: no reply
14: no reply
15: no reply
16: no reply
17: no reply
18: no reply
19: no reply
20: no reply
21: no reply
22: no reply
23: no reply
24: no reply
Too many hops: pmtu 1500
Resume: pmtu 1500 From ITA host (Karsolink) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | * | - | 0%* | - | |
| 2 | * | - | 0%* | - | |
| 3 | * | - | - | - | |
| 4 | fastweb-v6.mix-it.net @MIX-IT / NAMEX / MINAP / TOP-IX / VSIX / EQUINIX-MILAN / BGPX-ROME / NAMEX-BARI / PCIX / DECIX-PALERMO 2001:7f8:b:100:1d1:a5d1:2874:46 | 9.5ms | 0% | - | NA |
| 5 | 2001:b00:1:1:1::1af | 9.5ms | 0% | AS12874 | FASTWEB - Fastweb SpA, IT |
| 6 | 2001:b00:1:1:3::d7 | 16.2ms | 0% | AS12874 | FASTWEB - Fastweb SpA, IT |
| 7 | 2001:b00:1:1:2::db | 16.5ms | 0% | AS12874 | FASTWEB - Fastweb SpA, IT |
| 8 | 2a00:1be0:0:97::257 | 20.4ms | 0% | AS21034 | MICSO-SRL-AS - Micso Information Technology Srl, IT |
| 9 | * | - | 0% | - | |
| 10 | * | - | 0% | - | |
| 11 | * | - | - | - | |
| 12 | * | - | - | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - | |
| 19 | * | - | - | - | |
| 20 | * | - | - | - | |
| 21 | * | - | - | - | |
| 22 | * | - | - | - | |
| 23 | * | - | - | - | |
| 24 | * | - | - | - |
tracepath -6
1?: [LOCALHOST] 0.062ms pmtu 1500
1: karsolink-01.net.karsolink.com 0.664ms
1: karsolink-01.net.karsolink.com 0.606ms
2: no reply
3: 2a12:d8c0:109f:106::a2 3.502ms
4: fastweb-v6.mix-it.net 9.997ms
5: 2001:b00:1:1:3::12f 9.126ms
6: 2001:b00:1:1:2::ab 24.879ms
7: 2001:b00:1:1:2::db 20.492ms
8: 2a00:1be0:0:97::257 21.871ms
9: no reply
10: no reply
11: no reply
12: no reply
13: no reply
14: no reply
15: no reply
16: no reply
17: no reply
18: no reply
19: no reply
20: no reply
21: no reply
22: no reply
23: no reply
24: no reply
Too many hops: pmtu 1500
Resume: pmtu 1500 From SLO host (6connect) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | fw1-lju.6connect.com 2607:fae0:a000::2 | 0.4ms | 0%* | AS8038 | 6CONNECT - 6connect, Inc., US |
| 2 | * | - | - | - | |
| 3 | 2a03:a100:0:201:1::1 | 0.7ms | 10% | AS56635 | XENYA - XENYA inzeniring, proizvodnja in trgovina, d.o.o. Ljubljana, SI |
| 4 | 2001:7f8:46:0:1::3303 | 7.8ms | 0% | AS51988 | ARNES-SIX - ARNES, SI |
| 5 | i00mil-005-loo179.bb.ip-plus.net 2001:918:100:74::1 | 7.9ms | 0% | AS3303 | SWISSCOM - Swisscom (Schweiz) AG, CH |
| 6 | 2001:4d98:a000::119 | 26.0ms | 0% | - | NA |
| 7 | 2001:b00:1:1:1::1b3 | 10.6ms | 0% | AS12874 | FASTWEB - Fastweb SpA, IT |
| 8 | 2001:b00:1:1:3::d7 | 18.7ms | 0% | AS12874 | FASTWEB - Fastweb SpA, IT |
| 9 | * | - | 10% | - | |
| 10 | 2a00:1be0:0:97::257 | 26.5ms | 0% | AS21034 | MICSO-SRL-AS - Micso Information Technology Srl, IT |
| 11 | * | - | 10% | - | |
| 12 | * | - | 0% | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - | |
| 19 | * | - | - | - | |
| 20 | * | - | - | - | |
| 21 | * | - | - | - | |
| 22 | * | - | - | - | |
| 23 | * | - | - | - | |
| 24 | * | - | - | - |
Rate-limited ICMPv6: hop 3, hop 9, hop 11 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.018ms pmtu 9000
1: fw1-lju.6connect.com 0.590ms
1: fw1-lju.6connect.com 0.570ms
2: no reply
3: 2a03:a100:0:201:1::1 1.099ms
4: 2a03:a100:0:201:1::1 0.848ms pmtu 1500
4: 2001:7f8:46:0:1::3303 7.824ms asymm 5
5: i00mil-005-loo179.bb.ip-plus.net 8.106ms asymm 6
6: 2001:4d98:a000::119 26.124ms asymm 10
7: 2001:b00:1:1:1::1b3 10.712ms asymm 9
8: 2001:b00:1:1:3::d7 18.911ms asymm 10
9: 2001:b00:1:1:2::d9 27.180ms asymm 11
10: 2a00:1be0:0:97::257 29.801ms
11: no reply
12: no reply
13: no reply
14: no reply
15: no reply
16: no reply
17: no reply
18: no reply
19: no reply
20: no reply
21: no reply
22: no reply
23: no reply
24: no reply
Too many hops: pmtu 1500From SLO host (T-2) openRFC 4890 ✓
filter likely at: (none) · min PMTU on path: 1500
Path (traceroute + mtr + PTR)
| # | IP / PTR | RTT | mtr loss | AS | AS holder |
|---|---|---|---|---|---|
| 1 | * | - | - | - | |
| 2 | 2a01:260:1::225 | 1.6ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 3 | 2a01-260-1-1--9c.core6.t-2.net 2a01:260:1:1::9c | 2.0ms | 0%* | AS34779 | T-2-AS - T-2, d.o.o., SI |
| 4 | 2001:7f8:46:0:1::3303 | 8.6ms | 0% | AS51988 | ARNES-SIX - ARNES, SI |
| 5 | i00mil-005-loo179.bb.ip-plus.net 2001:918:100:74::1 | 9.2ms | 0% | AS3303 | SWISSCOM - Swisscom (Schweiz) AG, CH |
| 6 | 2001:4d98:a000::119 | 26.2ms | 50% | - | NA |
| 7 | 2001:b00:1:1:1::1b3 | 14.1ms | 0% | AS12874 | FASTWEB - Fastweb SpA, IT |
| 8 | 2001:b00:1:1:3::d7 | 22.9ms | 0% | AS12874 | FASTWEB - Fastweb SpA, IT |
| 9 | 2001:b00:1:1:2::db | 26.6ms | 40% | AS12874 | FASTWEB - Fastweb SpA, IT |
| 10 | 2a00:1be0:0:97::257 | 32.7ms | 0% | AS21034 | MICSO-SRL-AS - Micso Information Technology Srl, IT |
| 11 | * | - | 0% | - | |
| 12 | * | - | 0% | - | |
| 13 | * | - | - | - | |
| 14 | * | - | - | - | |
| 15 | * | - | - | - | |
| 16 | * | - | - | - | |
| 17 | * | - | - | - | |
| 18 | * | - | - | - | |
| 19 | * | - | - | - | |
| 20 | * | - | - | - | |
| 21 | * | - | - | - | |
| 22 | * | - | - | - | |
| 23 | * | - | - | - | |
| 24 | * | - | - | - |
Rate-limited ICMPv6: hop 6, hop 9 (loss between 5% and 95% across mtr cycles - the router replies but only sometimes).
tracepath -6
1?: [LOCALHOST] 0.026ms pmtu 1500
1: 2a01:261:313:b814::1 0.585ms
2: 2a01:260:1::225 3.055ms
3: 2a01-260-1-1--9a.core6.t-2.net 3.003ms
4: 2001:7f8:46:0:1::3303 10.648ms
5: i00mil-005-loo179.bb.ip-plus.net 9.395ms
6: 2001:4d98:a000::119 61.644ms asymm 11
7: 2001:b00:1:1:3::133 15.513ms asymm 8
8: 2001:b00:1:1:3::d7 23.217ms asymm 9
9: 2001:b00:1:1:2::db 23.086ms asymm 10
10: 2a00:1be0:0:97::257 33.439ms asymm 9
11: no reply
12: no reply
13: no reply
14: no reply
15: no reply
16: no reply
17: no reply
18: no reply
19: no reply
20: no reply
21: no reply
22: no reply
23: no reply
24: no reply
Too many hops: pmtu 1500
Resume: pmtu 1500