[REN-BGP-stats-all] IPv4 R&E Routing Table Report - ASREN (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Mon May 20 17:05:37 UTC 2024
IPv4 R&E Routing Table Report 17:05 GMT Mon 20 May, 2024
IPv4 BGP Table (R&E) as seen at ASREN.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/ASREN/
Analysis Summary
----------------
BGP routing table entries examined: 12044
Prefixes after maximum aggregation (per Origin AS): 7377
Deaggregation factor: 1.63
Unique aggregates announced (without unneeded subnets): 8106
Number of IPv4 prefixes with a valid ROA: 3958
Number of IPv4 prefixes with an invalid ROA: 0
Number of IPv4 prefixes with no ROA: 8086
Total ASes present in the Internet Routing Table: 1861
Prefixes per ASN: 6.47
Origin-only ASes present in the Internet Routing Table: 1596
Origin ASes announcing only one prefix: 759
Transit ASes present in the Internet Routing Table: 265
Transit-only ASes present in the Internet Routing Table: 54
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: 14
Max AS path prepend of ASN ( 30116) 10
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: 44497
Number of 32-bit ASNs visible in the Routing Table: 435
Prefixes from 32-bit ASNs in the Routing Table: 1066
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: 1
Number of addresses announced to Internet: 153683520
Equivalent to 9 /8s, 41 /16s and 6 /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: 1253
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 3133
Total APNIC prefixes after maximum aggregation: 1667
APNIC Deaggregation factor: 1.88
Prefixes being announced from the APNIC address blocks: 3133
Unique aggregates announced from the APNIC address blocks: 1777
APNIC Region origin ASes present in the Internet Routing Table: 399
APNIC Prefixes per ASN: 7.85
APNIC Region origin ASes announcing only one prefix: 186
APNIC Region transit ASes present in the Internet Routing Table: 43
Average APNIC Region AS path length visible: 4.0
Max APNIC Region AS path length visible: 12
Number of APNIC region 32-bit ASNs visible in the Routing Table: 161
Number of APNIC addresses announced to Internet: 37733952
Equivalent to 2 /8s, 63 /16s and 198 /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, 131072-153913
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: 5103
Total ARIN prefixes after maximum aggregation: 2969
ARIN Deaggregation factor: 1.72
Prefixes being announced from the ARIN address blocks: 5112
Unique aggregates announced from the ARIN address blocks: 3368
ARIN Region origin ASes present in the Internet Routing Table: 760
ARIN Prefixes per ASN: 6.73
ARIN Region origin ASes announcing only one prefix: 275
ARIN Region transit ASes present in the Internet Routing Table: 110
Average ARIN Region AS path length visible: 5.0
Max ARIN Region AS path length visible: 14
Number of ARIN region 32-bit ASNs visible in the Routing Table: 121
Number of ARIN addresses announced to Internet: 59127584
Equivalent to 3 /8s, 134 /16s and 55 /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, 47/8, 48/8, 50/8, 52/8, 53/8,
54/8, 55/8, 56/8, 57/8, 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: 2911
Total RIPE prefixes after maximum aggregation: 2432
RIPE Deaggregation factor: 1.20
Prefixes being announced from the RIPE address blocks: 2903
Unique aggregates announced from the RIPE address blocks: 2517
RIPE Region origin ASes present in the Internet Routing Table: 562
RIPE Prefixes per ASN: 5.17
RIPE Region origin ASes announcing only one prefix: 257
RIPE Region transit ASes present in the Internet Routing Table: 84
Average RIPE Region AS path length visible: 3.7
Max RIPE Region AS path length visible: 12
Number of RIPE region 32-bit ASNs visible in the Routing Table: 128
Number of RIPE addresses announced to Internet: 54869120
Equivalent to 3 /8s, 69 /16s and 60 /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,
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: 482
Total LACNIC prefixes after maximum aggregation: 263
LACNIC Deaggregation factor: 1.83
Prefixes being announced from the LACNIC address blocks: 481
Unique aggregates announced from the LACNIC address blocks: 377
LACNIC Region origin ASes present in the Internet Routing Table: 61
LACNIC Prefixes per ASN: 7.89
LACNIC Region origin ASes announcing only one prefix: 25
LACNIC Region transit ASes present in the Internet Routing Table: 17
Average LACNIC Region AS path length visible: 4.8
Max LACNIC Region AS path length visible: 10
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 14
Number of LACNIC addresses announced to Internet: 1367904
Equivalent to 0 /8s, 20 /16s and 223 /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: 414
Total AfriNIC prefixes after maximum aggregation: 45
AfriNIC Deaggregation factor: 9.20
Prefixes being announced from the AfriNIC address blocks: 414
Unique aggregates announced from the AfriNIC address blocks: 66
AfriNIC Region origin ASes present in the Internet Routing Table: 24
AfriNIC Prefixes per ASN: 17.25
AfriNIC Region origin ASes announcing only one prefix: 16
AfriNIC Region transit ASes present in the Internet Routing Table: 5
Average AfriNIC Region AS path length visible: 4.0
Max AfriNIC Region AS path length visible: 8
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 11
Number of AfriNIC addresses announced to Internet: 584704
Equivalent to 0 /8s, 8 /16s and 236 /24s
AfriNIC AS Blocks 36864-37887, 327680-329727 & ERX transfers
AfriNIC Address Blocks 41/8, 45/8, 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 596 2162 465 SINET-AS Research Organization of Infor
7497 443 180 24 CSTNET-AS-AP Computer Network Informati
4538 187 4193 75 ERX-CERNET-BKB China Education and Rese
58647 182 18 2 KAGAWAU-AS Kagawa University, JP
7575 172 329 115 AARNET-AS-AP Australian Academic and Re
55824 130 19 18 NKN-CORE-NW NKN Core Network, IN
2697 58 4 34 ERX-ERNET-AS Education and Research Net
132524 44 9 11 TIFR-AS Tata Institute of Fundamental R
24361 33 56 17 CNGI-NJ-IX-AS-AP CERNET2 IX at Southeas
23767 29 2 9 A-STAR-AS-AP A-STAR, SG
Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
376 202 162 151 RISQ-AS, CA
5786 199 16 1 UPRENET, PR
2920 177 34 7 LACOE, US
2152 150 507 94 CSUNET-NW, US
18558 140 18 4 NETBLK-RCOEK, US
270 134 334 95 AS270, US
23024 108 7 22 OCDE, US
237 87 543 51 MERIT-AS-14, US
1736 79 16 1 MU-AS, US
21976 79 51 18 NJEDGE-NET, US
Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 282 1899 249 DFN Verein zur Foerderung eines Deutsch
786 187 1767 184 JANET Jisc Services Limited, GB
559 113 533 103 SWITCH Peering requests: peering at switch
1103 95 1503 83 SURFNET-NL SURFnet, The Netherlands, NL
2614 93 27 73 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnol
2200 63 598 58 FR-RENATER Reseau National de telecommu
200521 55 4 23 SEAP-AGE, ES
1653 53 151 50 SUNET SUNET Swedish University Network,
Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
11340 108 25 52 Red Universitaria Nacional, CL
1916 85 31 45 Rede Nacional de Ensino e Pesquisa, BR
1251 35 32 25 FUNDACAO DE AMPARO A PESQUISA DO ESTADO
61468 29 2 5 CEDIA, EC
20191 27 2 23 Pontificia Universidad Catolica de Chil
3597 21 16 2 Fundacion InnovaT, AR
28571 19 40 18 UNIVERSIDADE DE SAO PAULO, BR
27790 18 2 2 Universidad Nacional de Cordoba, AR
52888 16 7 8 UNIVERSIDADE FEDERAL DE SAO CARLOS, BR
278 9 16 4 Universidad Nacional Autonoma de Mexico
Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 253 80 5 KENET-AS, KE
327700 48 16 1 MoRENet, MZ
37215 36 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
37182 14 11 3 TERNET, TZ
37654 14 1 8 RwEdNet-AS, RW
31960 5 1 1 EMUNET, MZ
328903 4 0 1 RITER, CI
3208 1 2 1 ARN, DZ
36944 1 1 1 UBUNTU-UNICAST-AS, MW
Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 596 2162 465 SINET-AS Research Organization of Infor
7497 443 180 24 CSTNET-AS-AP Computer Network Informati
680 282 1899 249 DFN Verein zur Foerderung eines Deutsch
36914 253 80 5 KENET-AS, KE
376 202 162 151 RISQ-AS, CA
5786 199 16 1 UPRENET, PR
786 187 1767 184 JANET Jisc Services Limited, GB
4538 187 4193 75 ERX-CERNET-BKB China Education and Rese
58647 182 18 2 KAGAWAU-AS Kagawa University, JP
2920 177 34 7 LACOE, US
Complete listing at https://bgp.nsrc.org/REN/ASREN/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
7497 443 419 CSTNET-AS-AP Computer Network Information Cente
36914 253 248 KENET-AS, KE
5786 199 198 UPRENET, PR
58647 182 180 KAGAWAU-AS Kagawa University, JP
2920 177 170 LACOE, US
18558 140 136 NETBLK-RCOEK, US
4538 187 112 ERX-CERNET-BKB China Education and Research Net
55824 130 112 NKN-CORE-NW NKN Core Network, IN
23024 108 86 OCDE, US
1736 79 78 MU-AS, US
Complete listing at https://bgp.nsrc.org/REN/ASREN/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
394607 UNALLOCATED 216.100.93.0/24 23024 OCDE, US
Complete listing at https://bgp.nsrc.org/REN/ASREN/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
192.31.196.0/24 Origin: 112 RESERVED, ZZ
192.31.196.0/24 Transit: 1103 SURFNET-NL SURFnet, The Netherlands, NL
Complete listing at https://bgp.nsrc.org/REN/ASREN/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 /11:0 /12:9
/13:17 /14:33 /15:100 /16:1493 /17:258 /18:257
/19:352 /20:522 /21:545 /22:917 /23:1035 /24:6358
/25:36 /26:47 /27:63 /28:0 /29:0 /30:0
/31:0 /32:0
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
36914 241 253 KENET-AS, KE
23024 51 108 OCDE, US
32440 51 65 LONI, US
327700 42 48 MoRENet, MZ
200521 32 55 SEAP-AGE, ES
37215 30 36 MAREN, MW
25977 27 30 HCCS, US
31638 21 21 ASN-LEPIDA, IT
61468 20 29 CEDIA, EC
3233 19 29 ICI-ROTLD Romanian National R&D Network, RO
Complete listing at https://bgp.nsrc.org/REN/ASREN/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:1 5:15 8:2 12:1 14:91 24:3
31:1 35:3 38:2 41:203 42:12 44:4
45:18 46:5 49:7 50:1 58:16 59:2
60:6 62:6 63:2 64:13 66:9 67:32
68:1 69:9 70:2 72:7 74:12 76:4
77:4 78:3 79:10 80:8 81:24 82:2
83:6 84:6 85:24 87:1 89:11 91:36
93:5 94:2 95:1 96:5 101:5 102:5
103:197 104:63 108:2 109:5 114:1 118:2
119:20 121:12 123:8 124:41 128:60 129:22
130:72 131:42 132:17 133:157 134:75 136:197
137:25 138:57 139:4 140:8 141:3 142:20
143:12 144:23 145:2 146:119 147:20 148:7
149:11 150:6 151:3 152:65 153:6 154:8
155:25 156:136 157:10 158:30 159:114 160:28
161:12 162:8 163:53 164:13 165:8 167:7
168:29 169:6 170:10 172:2 173:5 175:18
176:8 177:2 179:6 180:14 182:1 184:5
185:41 186:1 187:1 188:11 190:16 191:1
192:1084 193:226 194:86 195:60 196:14 197:118
198:300 199:180 200:113 201:5 202:349 203:191
204:269 205:97 206:122 207:173 208:16 209:82
210:88 211:2 212:41 213:3 216:48 217:9
219:4 220:1 222:2 223:14
End of report
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