[REN-BGP-stats-all] IPv4 R&E Routing Table Report - GEANT (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Wed Apr 2 17:00:43 UTC 2025
IPv4 R&E Routing Table Report 17:00 GMT Wed 02 Apr, 2025
IPv4 BGP Table (R&E) as seen at GEANT.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/GEANT/
Analysis Summary
----------------
BGP routing table entries examined: 19075
Prefixes after maximum aggregation (per Origin AS): 10549
Deaggregation factor: 1.81
Unique aggregates announced (without unneeded subnets): 11651
Number of IPv4 prefixes with a valid ROA: 7517
Number of IPv4 prefixes with an invalid ROA: 12
Number of IPv4 prefixes with no ROA: 11546
Total ASes present in the Internet Routing Table: 2749
Prefixes per ASN: 6.94
Origin-only ASes present in the Internet Routing Table: 2396
Origin ASes announcing only one prefix: 1055
Transit ASes present in the Internet Routing Table: 353
Transit-only ASes present in the Internet Routing Table: 54
Paths with bogon ASNs present in the IPv4 Routing Table: 6
Average AS path length visible in the Internet Routing Table: 3.8
Max AS path length visible: 19
Max AS path prepend of ASN (395156) 12
Prefixes from unregistered ASNs in the Routing Table: 7
Number of instances of unregistered ASNs: 7
Number of 32-bit ASNs allocated by the RIRs: 46124
Number of 32-bit ASNs visible in the Routing Table: 684
Prefixes from 32-bit ASNs in the Routing Table: 1847
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: 199307441
Equivalent to 11 /8s, 225 /16s and 48 /24s
Percentage of available address space announced: 5.4
Percentage of allocated address space announced: 5.4
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: 2371
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4862
Total APNIC prefixes after maximum aggregation: 2293
APNIC Deaggregation factor: 2.12
Prefixes being announced from the APNIC address blocks: 4861
Unique aggregates announced from the APNIC address blocks: 2601
APNIC Region origin ASes present in the Internet Routing Table: 587
APNIC Prefixes per ASN: 8.28
APNIC Region origin ASes announcing only one prefix: 244
APNIC Region transit ASes present in the Internet Routing Table: 49
Average APNIC Region AS path length visible: 3.6
Max APNIC Region AS path length visible: 14
Number of APNIC region 32-bit ASNs visible in the Routing Table: 237
Number of APNIC addresses announced to Internet: 45557568
Equivalent to 2 /8s, 183 /16s and 39 /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: 8020
Total ARIN prefixes after maximum aggregation: 4672
ARIN Deaggregation factor: 1.72
Prefixes being announced from the ARIN address blocks: 8035
Unique aggregates announced from the ARIN address blocks: 5175
ARIN Region origin ASes present in the Internet Routing Table: 1254
ARIN Prefixes per ASN: 6.41
ARIN Region origin ASes announcing only one prefix: 441
ARIN Region transit ASes present in the Internet Routing Table: 149
Average ARIN Region AS path length visible: 4.2
Max ARIN Region AS path length visible: 15
Number of ARIN region 32-bit ASNs visible in the Routing Table: 210
Number of ARIN addresses announced to Internet: 90443680
Equivalent to 5 /8s, 100 /16s and 15 /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: 3720
Total RIPE prefixes after maximum aggregation: 2951
RIPE Deaggregation factor: 1.26
Prefixes being announced from the RIPE address blocks: 3713
Unique aggregates announced from the RIPE address blocks: 3004
RIPE Region origin ASes present in the Internet Routing Table: 681
RIPE Prefixes per ASN: 5.45
RIPE Region origin ASes announcing only one prefix: 296
RIPE Region transit ASes present in the Internet Routing Table: 107
Average RIPE Region AS path length visible: 2.9
Max RIPE Region AS path length visible: 12
Number of RIPE region 32-bit ASNs visible in the Routing Table: 156
Number of RIPE addresses announced to Internet: 57122449
Equivalent to 3 /8s, 103 /16s and 158 /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: 1306
Total LACNIC prefixes after maximum aggregation: 448
LACNIC Deaggregation factor: 2.92
Prefixes being announced from the LACNIC address blocks: 1304
Unique aggregates announced from the LACNIC address blocks: 633
LACNIC Region origin ASes present in the Internet Routing Table: 117
LACNIC Prefixes per ASN: 11.15
LACNIC Region origin ASes announcing only one prefix: 45
LACNIC Region transit ASes present in the Internet Routing Table: 20
Average LACNIC Region AS path length visible: 4.5
Max LACNIC Region AS path length visible: 10
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 51
Number of LACNIC addresses announced to Internet: 3684672
Equivalent to 0 /8s, 56 /16s and 57 /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: 1160
Total AfriNIC prefixes after maximum aggregation: 178
AfriNIC Deaggregation factor: 6.52
Prefixes being announced from the AfriNIC address blocks: 1159
Unique aggregates announced from the AfriNIC address blocks: 235
AfriNIC Region origin ASes present in the Internet Routing Table: 53
AfriNIC Prefixes per ASN: 21.87
AfriNIC Region origin ASes announcing only one prefix: 29
AfriNIC Region transit ASes present in the Internet Routing Table: 11
Average AfriNIC Region AS path length visible: 3.6
Max AfriNIC Region AS path length visible: 19
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 30
Number of AfriNIC addresses announced to Internet: 2496512
Equivalent to 0 /8s, 38 /16s and 24 /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 639 2170 465 SINET-AS Research Organization of Informa
7497 452 180 24 CSTNET-AS-AP Computer Network Information
1237 196 74 145 KREONET-AS-KR KISTI, KR
4538 194 4192 71 ERX-CERNET-BKB China Education and Resear
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
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha
1659 61 1466 35 ERX-TANET-ASN1 Taiwan Academic Network TA
23570 59 5 11 INCHEON-AS-KR UNIVERSITY OF INCHEON, KR
Complete listing at https://bgp.nsrc.org/REN/GEANT/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
668 202 646 172 DNIC-AS-00668, US
376 201 162 151 RISQ-AS, CA
5786 199 16 1 UPRENET, PR
2920 172 34 7 LACOE, US
2152 148 507 97 CENIC-2152, US
18558 139 18 4 NETBLK-RCOEK, US
81 129 519 34 NCREN, US
23024 99 7 17 OCDE, US
21976 88 34 14 NJEDGE-NET, US
237 85 542 51 MERIT-AS-14, US
Complete listing at https://bgp.nsrc.org/REN/GEANT/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 284 1899 249 DFN Verein zur Foerderung eines Deutschen
786 196 1750 188 JANET Jisc Services Limited, GB
559 114 533 104 SWITCH Peering requests: peering at switch.c
8895 108 24 5 ISU Internet Services Unit ISU, SA
1103 96 1487 83 SURFNET-NL SURFnet, The Netherlands, NL
3267 92 30 74 NIKS, RU
2614 89 26 69 ROEDUNET, RO
137 82 677 77 ASGARR Consortium GARR, IT
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog
553 75 366 75 BELWUE BelWue-Koordination, DE
Complete listing at https://bgp.nsrc.org/REN/GEANT/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 310 178 43 Rede Nacional de Ensino e Pesquisa, BR
28391 159 10 71 Universidad Juarez Autonoma de Tabasco, M
11340 110 25 52 Red Universitaria Nacional, CL
271640 67 8 1 UNIVERSIDADE FEDERAL DE VICOSA, BR
61468 52 3 21 CEDIA, EC
19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR
2715 46 99 35 Fundacao Carlos Chagas Filho de Amparo a
3596 40 8 4 Universidad Autonoma Metropolitana, MX
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/GEANT/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 547 82 3 KENET-AS, KE
2018 374 318 69 TENET-1, ZA
8094 47 48 18 PUKNET, ZA
37215 34 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
37661 13 8 5 NRaE1-AS, NG
30983 12 4 2 MARWAN-AS, MA
37501 11 49 6 UOFS, ZA
327700 11 16 1 MoRENet, MZ
37654 10 1 6 RwEdNet-AS, RW
Complete listing at https://bgp.nsrc.org/REN/GEANT/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
2907 639 2170 465 SINET-AS Research Organization of Informa
36914 547 82 3 KENET-AS, KE
7497 452 180 24 CSTNET-AS-AP Computer Network Information
2018 374 318 69 TENET-1, ZA
1916 310 178 43 Rede Nacional de Ensino e Pesquisa, BR
680 284 1899 249 DFN Verein zur Foerderung eines Deutschen
668 202 646 172 DNIC-AS-00668, US
376 201 162 151 RISQ-AS, CA
5786 199 16 1 UPRENET, PR
786 196 1750 188 JANET Jisc Services Limited, GB
Complete listing at https://bgp.nsrc.org/REN/GEANT/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 547 544 KENET-AS, KE
7497 452 428 CSTNET-AS-AP Computer Network Information Cente
2018 374 305 TENET-1, ZA
1916 310 267 Rede Nacional de Ensino e Pesquisa, BR
5786 199 198 UPRENET, PR
58647 183 181 KAGAWAU-AS Kagawa University, JP
2920 172 165 LACOE, US
18558 139 135 NETBLK-RCOEK, US
55824 147 126 NKN-CORE-NW NKN Core Network, IN
4538 194 123 ERX-CERNET-BKB China Education and Research Net
Complete listing at https://bgp.nsrc.org/REN/GEANT/data-CIDRnet
List of Unregistered Origin ASNs (Global)
-----------------------------------------
Bad AS Designation Net Originated Transit AS Transit AS Name
65111 PRIVATE 62.40.96.27/32 20965 GEANT The GEANT IP Serv
65111 PRIVATE 62.40.96.44/32 20965 GEANT The GEANT IP Serv
65111 PRIVATE 62.40.99.40/29 20965 GEANT The GEANT IP Serv
64500 DOCUMENT 62.40.99.56/29 20965 GEANT The GEANT IP Serv
65111 PRIVATE 62.40.117.18/31 20965 GEANT The GEANT IP Serv
65111 PRIVATE 62.40.117.36/31 20965 GEANT The GEANT IP Serv
26971 UNALLOCATED 129.111.0.0/16 276 OTS-AS-276, US
Complete listing at https://bgp.nsrc.org/REN/GEANT/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
164.160.192.0/21 Origin: 37661 NRaE1-AS, NG
164.160.192.0/21 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/GEANT/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
/13:19 /14:35 /15:115 /16:1982 /17:407 /18:459
/19:580 /20:848 /21:879 /22:1395 /23:1533 /24:10599
/25:58 /26:75 /27:34 /28:7 /29:17 /30:10
/31:3 /32:7
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
36914 523 547 KENET-AS, KE
8895 105 108 ISU Internet Services Unit ISU, SA
1916 74 310 Rede Nacional de Ensino e Pesquisa, BR
3267 43 92 NIKS, RU
23024 38 99 OCDE, US
32440 33 57 LONI, US
28614 32 38 Fundacao Universidade Regional de Blumenau, BR
46115 32 35 LUTHER, US
200521 31 56 SEAP-AGE, ES
25977 30 44 HCCS, US
Complete listing at https://bgp.nsrc.org/REN/GEANT/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:2 5:16 6:4 8:2 12:1 14:93
23:8 24:2 31:1 35:9 37:8 38:10
40:1 41:222 42:17 44:4 45:45 46:4
47:1 49:8 50:2 52:1 58:15 59:20
60:6 61:3 62:14 63:33 64:43 65:5
66:34 67:39 68:10 69:13 70:2 71:1
72:8 74:53 76:34 77:9 78:3 79:9
80:17 81:24 82:6 83:8 84:11 85:53
86:7 87:1 89:10 91:39 92:2 93:14
94:2 95:2 96:5 97:1 98:2 101:3
102:11 103:349 104:79 108:8 109:5 111:17
113:1 114:24 116:7 117:61 118:33 119:30
121:28 122:8 123:8 124:42 125:3 128:57
129:42 130:97 131:64 132:66 133:157 134:110
136:200 137:54 138:58 139:11 140:33 141:4
142:26 143:25 144:27 145:2 146:137 147:30
148:200 149:11 150:69 151:11 152:128 153:15
154:47 155:84 156:134 157:25 158:30 159:117
160:34 161:16 162:23 163:62 164:13 165:48
167:10 168:103 169:7 170:20 172:2 173:6
175:16 177:7 179:12 180:16 181:1 182:12
184:7 185:50 186:3 187:24 188:14 189:3
190:17 191:13 192:1415 193:311 194:134 195:115
196:149 197:335 198:465 199:271 200:284 201:36
202:632 203:433 204:371 205:133 206:210 207:224
208:64 209:118 210:224 211:4 212:146 213:7
214:8 216:90 217:21 218:22 219:6 220:17
222:4 223:4
End of report
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