[REN-BGP-stats-all] IPv4 R&E Routing Table Report - AARNET (Brisbane) (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Tue Jul 15 21:08:57 UTC 2025
IPv4 R&E Routing Table Report 21:05 GMT Tue 15 Jul, 2025
IPv4 BGP Table (R&E) as seen at AARNET (Brisbane).
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/AARNET-Brisbane/
Analysis Summary
----------------
BGP routing table entries examined: 19345
Prefixes after maximum aggregation (per Origin AS): 9455
Deaggregation factor: 2.05
Unique aggregates announced (without unneeded subnets): 1151
Number of IPv4 prefixes with a valid ROA: 7774
Number of IPv4 prefixes with an invalid ROA: 12
Number of IPv4 prefixes with no ROA: 11559
Total ASes present in the Internet Routing Table: 2720
Prefixes per ASN: 7.11
Origin-only ASes present in the Internet Routing Table: 2353
Origin ASes announcing only one prefix: 1041
Transit ASes present in the Internet Routing Table: 367
Transit-only ASes present in the Internet Routing Table: 65
Paths with bogon ASNs present in the IPv4 Routing Table: 27
Average AS path length visible in the Internet Routing Table: 3.9
Max AS path length visible: 19
Max AS path prepend of ASN (395156) 12
Prefixes from unregistered ASNs in the Routing Table: 33
Number of instances of unregistered ASNs: 33
Number of 32-bit ASNs allocated by the RIRs: 46832
Number of 32-bit ASNs visible in the Routing Table: 653
Prefixes from 32-bit ASNs in the Routing Table: 1783
Number of bogon 32-bit ASNs visible in the Routing Table: 0
Special use prefixes present in the Routing Table: 0
Prefixes being announced from unallocated address space: 3
Number of addresses announced to Internet: 27014912
Equivalent to 1 /8s, 156 /16s and 55 /24s
Percentage of available address space announced: 0.7
Percentage of allocated address space announced: 0.7
Percentage of available address space allocated: 100.0
Percentage of address space in use by end-sites: 99.6
Total number of prefixes smaller than registry allocations: 1828
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4839
Total APNIC prefixes after maximum aggregation: 2060
APNIC Deaggregation factor: 2.35
Prefixes being announced from the APNIC address blocks: 4838
Unique aggregates announced from the APNIC address blocks: 94
APNIC Region origin ASes present in the Internet Routing Table: 532
APNIC Prefixes per ASN: 9.09
APNIC Region origin ASes announcing only one prefix: 210
APNIC Region transit ASes present in the Internet Routing Table: 50
Average APNIC Region AS path length visible: 3.4
Max APNIC Region AS path length visible: 14
Number of APNIC region 32-bit ASNs visible in the Routing Table: 187
Number of APNIC addresses announced to Internet: 4163072
Equivalent to 0 /8s, 63 /16s and 134 /24s
APNIC AS Blocks 4608-4864, 7467-7722, 9216-10239, 17408-18431
(pre-ERX allocations) 23552-24575, 37888-38911, 45056-46079, 55296-56319,
58368-59391, 63488-64098, 64297-64395, 131072-155961
APNIC Address Blocks 1/8, 14/8, 27/8, 36/8, 39/8, 42/8, 43/8,
49/8, 58/8, 59/8, 60/8, 61/8, 101/8, 103/8,
106/8, 110/8, 111/8, 112/8, 113/8, 114/8, 115/8,
116/8, 117/8, 118/8, 119/8, 120/8, 121/8, 122/8,
123/8, 124/8, 125/8, 126/8, 133/8, 150/8, 153/8,
163/8, 171/8, 175/8, 180/8, 182/8, 183/8, 202/8,
203/8, 210/8, 211/8, 218/8, 219/8, 220/8, 221/8,
222/8, 223/8,
ARIN Region Analysis Summary
----------------------------
Prefixes being announced by ARIN Region ASes: 8423
Total ARIN prefixes after maximum aggregation: 4671
ARIN Deaggregation factor: 1.80
Prefixes being announced from the ARIN address blocks: 8468
Unique aggregates announced from the ARIN address blocks: 524
ARIN Region origin ASes present in the Internet Routing Table: 1273
ARIN Prefixes per ASN: 6.65
ARIN Region origin ASes announcing only one prefix: 446
ARIN Region transit ASes present in the Internet Routing Table: 160
Average ARIN Region AS path length visible: 4.0
Max ARIN Region AS path length visible: 15
Number of ARIN region 32-bit ASNs visible in the Routing Table: 215
Number of ARIN addresses announced to Internet: -1054361600
Equivalent to 193 /8s, 39 /16s and 184 /24s
ARIN AS Blocks 1-1876, 1902-2042, 2044-2046, 2048-2106
(pre-ERX allocations) 2138-2584, 2615-2772, 2823-2829, 2880-3153
3354-4607, 4865-5119, 5632-6655, 6912-7466
7723-8191, 10240-12287, 13312-15359, 16384-17407
18432-20479, 21504-23551, 25600-26591,
26624-27647, 29696-30719, 31744-33791
35840-36863, 39936-40959, 46080-47103
53248-55295, 62464-63487, 64198-64296, 393216-402332
ARIN Address Blocks 3/8, 4/8, 6/8, 7/8, 8/8, 9/8, 11/8,
12/8, 13/8, 15/8, 16/8, 17/8, 18/8, 19/8,
20/8, 21/8, 22/8, 23/8, 24/8, 26/8, 28/8,
29/8, 30/8, 32/8, 33/8, 34/8, 35/8, 38/8,
40/8, 44/8, 45/8, 47/8, 48/8, 50/8, 52/8,
54/8, 55/8, 56/8, 63/8, 64/8, 65/8, 66/8,
67/8, 68/8, 69/8, 70/8, 71/8, 72/8, 73/8,
74/8, 75/8, 76/8, 96/8, 97/8, 98/8, 99/8,
100/8, 104/8, 107/8, 108/8, 128/8, 129/8, 130/8,
131/8, 132/8, 134/8, 135/8, 136/8, 137/8, 138/8,
139/8, 140/8, 142/8, 143/8, 144/8, 146/8, 147/8,
148/8, 149/8, 152/8, 155/8, 156/8, 157/8, 158/8,
159/8, 160/8, 161/8, 162/8, 164/8, 165/8, 166/8,
167/8, 168/8, 169/8, 170/8, 172/8, 173/8, 174/8,
184/8, 192/8, 198/8, 199/8, 204/8, 205/8, 206/8,
207/8, 208/8, 209/8, 214/8, 215/8, 216/8,
RIPE Region Analysis Summary
----------------------------
Prefixes being announced by RIPE Region ASes: 3617
Total RIPE prefixes after maximum aggregation: 2087
RIPE Deaggregation factor: 1.73
Prefixes being announced from the RIPE address blocks: 3604
Unique aggregates announced from the RIPE address blocks: 501
RIPE Region origin ASes present in the Internet Routing Table: 661
RIPE Prefixes per ASN: 5.45
RIPE Region origin ASes announcing only one prefix: 298
RIPE Region transit ASes present in the Internet Routing Table: 105
Average RIPE Region AS path length visible: 3.8
Max RIPE Region AS path length visible: 13
Number of RIPE region 32-bit ASNs visible in the Routing Table: 156
Number of RIPE addresses announced to Internet: 3228928
Equivalent to 0 /8s, 49 /16s and 69 /24s
RIPE AS Blocks 1877-1901, 2043, 2047, 2107-2136, 2585-2614
(pre-ERX allocations) 2773-2822, 2830-2879, 3154-3353, 5377-5631
6656-6911, 8192-9215, 12288-13311, 15360-16383
20480-21503, 24576-25599, 28672-29695
30720-31743, 33792-35839, 38912-39935
40960-45055, 47104-52223, 56320-58367
59392-61439, 61952-62463, 64396-64495
196608-216475
RIPE Address Blocks 2/8, 5/8, 25/8, 31/8, 37/8, 46/8, 51/8,
53/8, 57/8, 62/8, 77/8, 78/8, 79/8, 80/8,
81/8, 82/8, 83/8, 84/8, 85/8, 86/8, 87/8,
88/8, 89/8, 90/8, 91/8, 92/8, 93/8, 94/8,
95/8, 109/8, 141/8, 145/8, 151/8, 176/8, 178/8,
185/8, 188/8, 193/8, 194/8, 195/8, 212/8, 213/8,
217/8,
LACNIC Region Analysis Summary
------------------------------
Prefixes being announced by LACNIC Region ASes: 1291
Total LACNIC prefixes after maximum aggregation: 475
LACNIC Deaggregation factor: 2.72
Prefixes being announced from the LACNIC address blocks: 1291
Unique aggregates announced from the LACNIC address blocks: 16
LACNIC Region origin ASes present in the Internet Routing Table: 134
LACNIC Prefixes per ASN: 9.63
LACNIC Region origin ASes announcing only one prefix: 57
LACNIC Region transit ASes present in the Internet Routing Table: 25
Average LACNIC Region AS path length visible: 5.0
Max LACNIC Region AS path length visible: 14
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 62
Number of LACNIC addresses announced to Internet: 8448
Equivalent to 0 /8s, 0 /16s and 33 /24s
LACNIC AS Blocks 26592-26623, 27648-28671, 52224-53247,
61440-61951, 64099-64197, 262144-274844 + ERX transfers
LACNIC Address Blocks 177/8, 179/8, 181/8, 186/8, 187/8, 189/8, 190/8,
191/8, 200/8, 201/8,
AfriNIC Region Analysis Summary
-------------------------------
Prefixes being announced by AfriNIC Region ASes: 1142
Total AfriNIC prefixes after maximum aggregation: 150
AfriNIC Deaggregation factor: 7.61
Prefixes being announced from the AfriNIC address blocks: 1141
Unique aggregates announced from the AfriNIC address blocks: 16
AfriNIC Region origin ASes present in the Internet Routing Table: 53
AfriNIC Prefixes per ASN: 21.53
AfriNIC Region origin ASes announcing only one prefix: 30
AfriNIC Region transit ASes present in the Internet Routing Table: 10
Average AfriNIC Region AS path length visible: 4.9
Max AfriNIC Region AS path length visible: 19
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 33
Number of AfriNIC addresses announced to Internet: 1073976064
Equivalent to 64 /8s, 3 /16s and 147 /24s
AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks 41/8, 102/8, 105/8, 154/8, 196/8, 197/8,
APNIC Region per AS prefix count summary
----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 601 524400 326 SINET-AS Research Organization of Inform
7497 453 98 29 CSTNET-AS-AP Computer Network Information
1237 194 262194 173 KREONET-AS-KR KISTI, KR
4538 193 789723 50 ERX-CERNET-BKB China Education and Resea
7575 188 15 86 AARNET-AS-AP Australian Academic and Rese
58647 182 18 2 KAGAWAU-AS Kagawa University, JP
10079 145 16 1 UNIWESTSYD-AS-AP University of Western Sy
55824 77 7 35 NKN-CORE-NW NKN Core Network, IN
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha
4621 67 262178 14 UNINET-AS-AP UNINET-, TH
Complete listing at https://bgp.nsrc.org/REN/AARNET-Brisbane/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2152 574 786701 64 CENIC-2152, US
2920 229 786470 55 LACOE, US
668 212 786718 104 DNIC-AS-00668, US
376 199 154 162 RISQ-AS, CA
5786 193 16 1 UPRENET, PR
18558 140 18 5 NETBLK-RCOEK, US
81 129 524806 34 NCREN, US
23024 99 524292 18 OCDE, US
21976 90 262176 19 NJEDGE-NET, US
237 86 786805 29 MERIT-AS-14, US
Complete listing at https://bgp.nsrc.org/REN/AARNET-Brisbane/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 284 140 36 DFN Verein zur Foerderung eines Deutschen
786 193 786924 45 JANET Jisc Services Limited, GB
559 114 262649 34 SWITCH Peering requests: peering at switch.
8895 109 262168 5 ISU Internet Services Unit ISU, SA
1103 99 787339 51 SURFNET-NL SURFnet, The Netherlands, NL
2614 92 262164 18 ROEDUNET, RO
137 82 262738 38 ASGARR Consortium GARR, IT
3267 80 262166 42 NIKS, RU
1930 79 262165 5 RCCN Fundacao para a Ciencia e a Tecnolo
553 75 524641 75 BELWUE BelWue-Koordination, DE
Complete listing at https://bgp.nsrc.org/REN/AARNET-Brisbane/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 240 262301 48 Rede Nacional de Ensino e Pesquisa, BR
28391 159 262149 31 Universidad Juarez Autonoma de Tabasco,
11340 110 262146 8 Red Universitaria Nacional, CL
271640 68 262144 68 UNIVERSIDADE FEDERAL DE VICOSA, BR
2715 55 262244 37 Fundacao Carlos Chagas Filho de Amparo a
61468 52 262145 5 CEDIA, EC
19611 48 16 13 Associacao Antonio Vieira - Unisinos, BR
28614 38 2 2 Fundacao Universidade Regional de Blumena
1251 37 524316 27 FUNDACAO DE AMPARO A PESQUISA DO ESTADO
3596 37 262150 3 Universidad Autonoma Metropolitana, MX
Complete listing at https://bgp.nsrc.org/REN/AARNET-Brisbane/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 566 82 3 KENET-AS, KE
2018 375 262448 71 TENET-1, ZA
8094 47 262150 4 PUKNET, ZA
37215 37 8 1 MAREN, MW
37501 11 49 6 UOFS, ZA
327700 11 16 1 MoRENet, MZ
37654 10 1 6 RwEdNet-AS, RW
36982 8 262160 3 UCT, ZA
327947 7 4 1 KNUST-, GH
30983 4 262144 3 MARWAN-AS, MA
Complete listing at https://bgp.nsrc.org/REN/AARNET-Brisbane/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 601 524400 326 SINET-AS Research Organization of Inform
2152 574 786701 64 CENIC-2152, US
36914 566 82 3 KENET-AS, KE
7497 453 98 29 CSTNET-AS-AP Computer Network Information
2018 375 262448 71 TENET-1, ZA
680 284 140 36 DFN Verein zur Foerderung eines Deutschen
1916 240 262301 48 Rede Nacional de Ensino e Pesquisa, BR
2920 229 786470 55 LACOE, US
668 212 786718 104 DNIC-AS-00668, US
376 199 154 162 RISQ-AS, CA
Complete listing at https://bgp.nsrc.org/REN/AARNET-Brisbane/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 566 563 KENET-AS, KE
2152 574 510 CENIC-2152, US
7497 453 424 CSTNET-AS-AP Computer Network Information Cente
2018 375 304 TENET-1, ZA
680 284 248 DFN Verein zur Foerderung eines Deutschen Forsc
1916 240 192 Rede Nacional de Ensino e Pesquisa, BR
5786 193 192 UPRENET, PR
58647 182 180 KAGAWAU-AS Kagawa University, JP
2920 229 174 LACOE, US
786 193 148 JANET Jisc Services Limited, GB
Complete listing at https://bgp.nsrc.org/REN/AARNET-Brisbane/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US
26898 UNALLOCATED 131.187.248.0/2 3112 OARNET-AS-1, US
26898 UNALLOCATED 131.187.248.0/2 3112 OARNET-AS-1, US
26898 UNALLOCATED 131.187.249.0/2 3112 OARNET-AS-1, US
26898 UNALLOCATED 131.187.250.0/2 3112 OARNET-AS-1, US
26898 UNALLOCATED 131.187.251.0/2 3112 OARNET-AS-1, US
26898 UNALLOCATED 198.30.187.0/24 3112 OARNET-AS-1, US
26898 UNALLOCATED 208.108.80.0/20 3112 OARNET-AS-1, US
26898 UNALLOCATED 208.108.80.0/24 3112 OARNET-AS-1, US
26898 UNALLOCATED 208.108.81.0/24 3112 OARNET-AS-1, US
Complete listing at https://bgp.nsrc.org/REN/AARNET-Brisbane/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
164.160.192.0/2 Origin: 37661 NRaE1-AS, NG
164.160.192.0/2 Transit: 37288 WACREN, SN
202.14.117.0/24 Origin: 17827 STOU-AS-TH Sukhothai Thammathirat Open U
202.14.117.0/24 Transit: 4621 UNINET-AS-AP UNINET-, TH
203.9.156.0/24 Origin: 1851 ADELAIDE-UNIVERSITY-AS-AP The University
203.9.156.0/24 Transit: 7575 AARNET-AS-AP Australian Academic and Res
Complete listing at https://bgp.nsrc.org/REN/AARNET-Brisbane/data-add-IANA
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:396 /2:4893 /3:0 /4:0 /5:0 /6:0
/7:0 /8:0 /9:1 /10:1 /11:1 /12:11
/13:19 /14:33 /15:115 /16:1976 /17:309 /18:347
/19:417 /20:608 /21:628 /22:991 /23:1091 /24:7508
/25:0 /26:0 /27:0 /28:0 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
36914 379 566 KENET-AS, KE
8895 63 109 ISU Internet Services Unit ISU, SA
3267 35 80 NIKS, RU
23024 34 99 OCDE, US
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
37215 31 37 MAREN, MW
25977 30 44 HCCS, US
27609 29 45 USC-UNIVERSITY-HOSPITAL, US
2152 28 574 CENIC-2152, US
Complete listing at https://bgp.nsrc.org/REN/AARNET-Brisbane/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:1 5:16 6:4 8:2 12:2 14:69
23:9 24:3 31:1 35:11 37:14 38:11
40:1 41:224 42:18 44:5 45:43 46:5
47:1 49:8 50:2 52:1 58:15 59:20
60:6 61:3 62:6 63:32 64:43 65:5
66:59 67:39 68:13 69:17 70:2 71:1
72:8 74:51 76:15 77:9 78:3 79:9
80:13 81:27 82:6 83:8 84:6 85:51
86:6 87:1 89:10 91:39 92:2 93:15
94:2 95:2 96:5 97:1 98:2 101:3
102:2 103:191 104:40 108:8 109:4 111:16
113:1 114:21 116:8 117:61 118:1 119:31
121:23 123:8 124:42 125:5 128:53 129:23
130:53 131:39 132:28 133:156 134:96 136:85
137:120 138:17 139:5 140:13 141:3 142:20
143:15 144:1 146:125 147:28 148:88 149:7
150:22 151:6 152:138 153:14 154:40 155:66
156:127 157:24 158:2 159:44 160:26 161:11
162:15 163:48 164:5 165:5 167:23 168:44
169:3 170:14 171:1 173:5 175:11 177:5
179:11 180:14 182:11 185:30 186:3 187:20
188:13 190:16 191:13 192:999 193:214 194:107
195:32 196:140 197:187 198:285 199:169 200:190
201:35 202:494 203:248 204:228 205:84 206:121
207:212 208:37 209:122 210:154 211:3 212:68
213:3 214:10 216:53 217:4 218:3 219:3
220:13 222:1 223:16
End of report
More information about the ren-bgp-stats-all
mailing list