[REN-BGP-stats-all] IPv4 R&E Routing Table Report - TENET (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Sun Feb 23 18:30:45 UTC 2025
IPv4 R&E Routing Table Report 18:30 GMT Sun 23 Feb, 2025
IPv4 BGP Table (R&E) as seen at TENET.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/TENET/
Analysis Summary
----------------
BGP routing table entries examined: 15892
Prefixes after maximum aggregation (per Origin AS): 8259
Deaggregation factor: 1.92
Unique aggregates announced (without unneeded subnets): 9444
Number of IPv4 prefixes with a valid ROA: 5670
Number of IPv4 prefixes with an invalid ROA: 2
Number of IPv4 prefixes with no ROA: 10220
Total ASes present in the Internet Routing Table: 2229
Prefixes per ASN: 7.13
Origin-only ASes present in the Internet Routing Table: 1945
Origin ASes announcing only one prefix: 829
Transit ASes present in the Internet Routing Table: 284
Transit-only ASes present in the Internet Routing Table: 58
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 4.4
Max AS path length visible: 15
Max AS path prepend of ASN (395156) 12
Prefixes from unregistered ASNs in the Routing Table: 1
Number of instances of unregistered ASNs: 1
Number of 32-bit ASNs allocated by the RIRs: 46189
Number of 32-bit ASNs visible in the Routing Table: 533
Prefixes from 32-bit ASNs in the Routing Table: 1478
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: 2
Number of addresses announced to Internet: 157187584
Equivalent to 9 /8s, 94 /16s and 126 /24s
Percentage of available address space announced: 4.2
Percentage of allocated address space announced: 4.2
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: 1780
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4322
Total APNIC prefixes after maximum aggregation: 2213
APNIC Deaggregation factor: 1.95
Prefixes being announced from the APNIC address blocks: 4321
Unique aggregates announced from the APNIC address blocks: 2577
APNIC Region origin ASes present in the Internet Routing Table: 553
APNIC Prefixes per ASN: 7.81
APNIC Region origin ASes announcing only one prefix: 241
APNIC Region transit ASes present in the Internet Routing Table: 57
Average APNIC Region AS path length visible: 4.6
Max APNIC Region AS path length visible: 13
Number of APNIC region 32-bit ASNs visible in the Routing Table: 228
Number of APNIC addresses announced to Internet: 45164032
Equivalent to 2 /8s, 177 /16s and 38 /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: 8132
Total ARIN prefixes after maximum aggregation: 4767
ARIN Deaggregation factor: 1.71
Prefixes being announced from the ARIN address blocks: 8139
Unique aggregates announced from the ARIN address blocks: 5317
ARIN Region origin ASes present in the Internet Routing Table: 1262
ARIN Prefixes per ASN: 6.45
ARIN Region origin ASes announcing only one prefix: 446
ARIN Region transit ASes present in the Internet Routing Table: 159
Average ARIN Region AS path length visible: 4.3
Max ARIN Region AS path length visible: 15
Number of ARIN region 32-bit ASNs visible in the Routing Table: 205
Number of ARIN addresses announced to Internet: 91746304
Equivalent to 5 /8s, 119 /16s and 240 /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: 850
Total RIPE prefixes after maximum aggregation: 600
RIPE Deaggregation factor: 1.42
Prefixes being announced from the RIPE address blocks: 845
Unique aggregates announced from the RIPE address blocks: 651
RIPE Region origin ASes present in the Internet Routing Table: 177
RIPE Prefixes per ASN: 4.77
RIPE Region origin ASes announcing only one prefix: 79
RIPE Region transit ASes present in the Internet Routing Table: 22
Average RIPE Region AS path length visible: 4.5
Max RIPE Region AS path length visible: 11
Number of RIPE region 32-bit ASNs visible in the Routing Table: 28
Number of RIPE addresses announced to Internet: 13779712
Equivalent to 0 /8s, 210 /16s and 67 /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: 1474
Total LACNIC prefixes after maximum aggregation: 539
LACNIC Deaggregation factor: 2.73
Prefixes being announced from the LACNIC address blocks: 1472
Unique aggregates announced from the LACNIC address blocks: 710
LACNIC Region origin ASes present in the Internet Routing Table: 156
LACNIC Prefixes per ASN: 9.44
LACNIC Region origin ASes announcing only one prefix: 55
LACNIC Region transit ASes present in the Internet Routing Table: 23
Average LACNIC Region AS path length visible: 4.6
Max LACNIC Region AS path length visible: 13
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 65
Number of LACNIC addresses announced to Internet: 4203264
Equivalent to 0 /8s, 64 /16s and 35 /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: 1113
Total AfriNIC prefixes after maximum aggregation: 139
AfriNIC Deaggregation factor: 8.01
Prefixes being announced from the AfriNIC address blocks: 1113
Unique aggregates announced from the AfriNIC address blocks: 187
AfriNIC Region origin ASes present in the Internet Routing Table: 22
AfriNIC Prefixes per ASN: 50.59
AfriNIC Region origin ASes announcing only one prefix: 8
AfriNIC Region transit ASes present in the Internet Routing Table: 7
Average AfriNIC Region AS path length visible: 3.8
Max AfriNIC Region AS path length visible: 9
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 7
Number of AfriNIC addresses announced to Internet: 2293760
Equivalent to 0 /8s, 35 /16s and 0 /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 623 2170 464 SINET-AS Research Organization of Informa
7497 451 180 24 CSTNET-AS-AP Computer Network Information
1237 192 74 146 KREONET-AS-KR KISTI, KR
58647 183 18 2 KAGAWAU-AS Kagawa University, JP
7575 174 297 117 AARNET-AS-AP Australian Academic and Rese
55824 147 19 21 NKN-CORE-NW NKN Core Network, IN
4538 140 4192 71 ERX-CERNET-BKB China Education and Resear
23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR
2697 57 4 33 ERX-ERNET-AS Education and Research Netwo
1659 56 1466 35 ERX-TANET-ASN1 Taiwan Academic Network TA
Complete listing at https://bgp.nsrc.org/REN/TENET/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
668 212 648 179 DNIC-AS-00668, US
376 202 162 151 RISQ-AS, CA
5786 197 16 1 UPRENET, PR
2920 173 34 7 LACOE, US
2152 149 507 97 CENIC-2152, US
18558 139 18 4 NETBLK-RCOEK, US
81 129 519 34 NCREN, US
270 117 328 81 AS270, US
23024 97 7 17 OCDE, US
21976 90 34 16 NJEDGE-NET, US
Complete listing at https://bgp.nsrc.org/REN/TENET/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
8895 110 24 5 ISU Internet Services Unit ISU, SA
1103 98 1743 84 SURFNET-NL SURFnet, The Netherlands, NL
3267 78 29 68 NIKS, RU
1653 50 150 48 SUNET SUNET Swedish University Network, E
1741 39 149 18 FUNETAS, FI
3218 39 3 24 COSMOS-3218-AS AS-COSMOS root, RU
8674 16 2 11 NETNOD-IX Netnod AB, SE
1880 14 1 7 STUPI, SE
224 13 256 13 UNINETT UNINETT, The Norwegian University
1101 12 465 12 IP-EEND-AS IP-EEND BV, NL
Complete listing at https://bgp.nsrc.org/REN/TENET/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 237 178 42 Rede Nacional de Ensino e Pesquisa, BR
28391 157 10 69 Universidad Juarez Autonoma de Tabasco, M
11340 109 25 52 Red Universitaria Nacional, CL
271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
61468 52 5 17 CEDIA, EC
4270 51 16 1 Red de Interconexion Universitaria, AR
2715 49 99 35 Fundacao Carlos Chagas Filho de Amparo a
19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR
28614 38 2 2 Fundacao Universidade Regional de Blumena
1251 37 31 26 FUNDACAO DE AMPARO A PESQUISA DO ESTADO S
Complete listing at https://bgp.nsrc.org/REN/TENET/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 543 82 3 KENET-AS, KE
2018 376 319 71 TENET-1, ZA
8094 47 48 18 PUKNET, ZA
37215 34 8 1 MAREN, MW
37182 31 8 1 TERNET, TZ
6879 24 2 9 ENSTINET-, EG
37501 11 49 6 UOFS, ZA
327700 11 16 1 MoRENet, MZ
36982 8 33 8 UCT, ZA
37654 8 1 5 RwEdNet-AS, RW
Complete listing at https://bgp.nsrc.org/REN/TENET/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 623 2170 464 SINET-AS Research Organization of Informa
36914 543 82 3 KENET-AS, KE
7497 451 180 24 CSTNET-AS-AP Computer Network Information
2018 376 319 71 TENET-1, ZA
1916 237 178 42 Rede Nacional de Ensino e Pesquisa, BR
668 212 648 179 DNIC-AS-00668, US
376 202 162 151 RISQ-AS, CA
5786 197 16 1 UPRENET, PR
1237 192 74 146 KREONET-AS-KR KISTI, KR
58647 183 18 2 KAGAWAU-AS Kagawa University, JP
Complete listing at https://bgp.nsrc.org/REN/TENET/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 543 540 KENET-AS, KE
7497 451 427 CSTNET-AS-AP Computer Network Information Cente
2018 376 305 TENET-1, ZA
5786 197 196 UPRENET, PR
1916 237 195 Rede Nacional de Ensino e Pesquisa, BR
58647 183 181 KAGAWAU-AS Kagawa University, JP
2920 173 166 LACOE, US
18558 139 135 NETBLK-RCOEK, US
55824 147 126 NKN-CORE-NW NKN Core Network, IN
8895 110 105 ISU Internet Services Unit ISU, SA
Complete listing at https://bgp.nsrc.org/REN/TENET/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
Complete listing at https://bgp.nsrc.org/REN/TENET/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
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/TENET/data-add-IANA
Number of prefixes announced per prefix length (Global)
-------------------------------------------------------
/1:0 /2:0 /3:0 /4:0 /5:0 /6:0
/7:0 /8:0 /9:1 /10:1 /11:1 /12:10
/13:17 /14:30 /15:86 /16:1462 /17:361 /18:405
/19:483 /20:709 /21:685 /22:1122 /23:1228 /24:9291
/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 519 543 KENET-AS, KE
8895 107 110 ISU Internet Services Unit ISU, SA
23024 36 97 OCDE, US
3267 34 78 NIKS, RU
32440 33 58 LONI, US
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
25977 30 44 HCCS, US
37182 30 31 TERNET, TZ
27609 29 45 USC-UNIVERSITY-HOSPITAL, US
Complete listing at https://bgp.nsrc.org/REN/TENET/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:2 4:2 6:4 8:2 12:2 14:93
23:9 24:3 35:14 38:11 40:1 41:248
42:11 44:3 45:38 47:1 49:11 50:2
52:1 59:19 60:6 61:3 62:3 63:32
64:44 65:5 66:41 67:39 68:10 69:17
70:2 71:1 72:8 74:50 76:34 77:8
80:4 82:3 83:1 84:1 85:20 86:5
87:1 89:1 91:6 92:2 93:1 96:5
97:1 98:2 102:2 103:349 104:80 108:10
109:4 111:5 113:1 114:24 116:9 117:61
118:33 119:30 121:11 122:8 123:8 124:42
125:5 128:56 129:30 130:95 131:56 132:64
133:156 134:103 136:198 137:46 138:57 139:6
140:33 141:3 142:41 143:23 144:24 146:135
147:28 148:191 149:13 150:69 151:9 152:136
153:3 154:36 155:62 156:129 157:24 158:26
159:116 160:34 161:18 162:24 163:63 164:11
165:48 167:10 168:119 169:7 170:94 171:1
172:2 173:6 175:16 177:5 179:13 180:16
181:1 182:10 184:6 185:14 186:3 187:22
188:3 189:5 190:33 191:13 192:1093 193:63
194:55 195:30 196:145 197:330 198:479 199:281
200:332 201:37 202:439 203:321 204:364 205:137
206:211 207:224 208:65 209:116 210:217 211:3
212:106 214:9 216:92 218:23 219:6 220:16
222:2 223:15
End of report
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