[REN-BGP-stats-all] IPv4 R&E Routing Table Report - Internet2 (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Thu Jan 2 22:00:43 UTC 2025
IPv4 R&E Routing Table Report 22:00 GMT Thu 02 Jan, 2025
IPv4 BGP Table (R&E) as seen at Internet2.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/Internet2/
Analysis Summary
----------------
BGP routing table entries examined: 24892
Prefixes after maximum aggregation (per Origin AS): 13632
Deaggregation factor: 1.83
Unique aggregates announced (without unneeded subnets): 15891
Number of IPv4 prefixes with a valid ROA: 12620
Number of IPv4 prefixes with an invalid ROA: 20
Number of IPv4 prefixes with no ROA: 12252
Total ASes present in the Internet Routing Table: 2805
Prefixes per ASN: 8.87
Origin-only ASes present in the Internet Routing Table: 2422
Origin ASes announcing only one prefix: 1076
Transit ASes present in the Internet Routing Table: 383
Transit-only ASes present in the Internet Routing Table: 70
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 3.4
Max AS path length visible: 27
Max AS path prepend of ASN (138136) 20
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: 46003
Number of 32-bit ASNs visible in the Routing Table: 683
Prefixes from 32-bit ASNs in the Routing Table: 1879
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: 9
Number of addresses announced to Internet: 242304848
Equivalent to 14 /8s, 113 /16s and 71 /24s
Percentage of available address space announced: 6.5
Percentage of allocated address space announced: 6.5
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: 3465
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 4687
Total APNIC prefixes after maximum aggregation: 2260
APNIC Deaggregation factor: 2.07
Prefixes being announced from the APNIC address blocks: 4801
Unique aggregates announced from the APNIC address blocks: 2721
APNIC Region origin ASes present in the Internet Routing Table: 562
APNIC Prefixes per ASN: 8.54
APNIC Region origin ASes announcing only one prefix: 241
APNIC Region transit ASes present in the Internet Routing Table: 59
Average APNIC Region AS path length visible: 3.9
Max APNIC Region AS path length visible: 27
Number of APNIC region 32-bit ASNs visible in the Routing Table: 211
Number of APNIC addresses announced to Internet: 45648704
Equivalent to 2 /8s, 184 /16s and 139 /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: 13980
Total ARIN prefixes after maximum aggregation: 7749
ARIN Deaggregation factor: 1.80
Prefixes being announced from the ARIN address blocks: 13697
Unique aggregates announced from the ARIN address blocks: 9054
ARIN Region origin ASes present in the Internet Routing Table: 1295
ARIN Prefixes per ASN: 10.58
ARIN Region origin ASes announcing only one prefix: 451
ARIN Region transit ASes present in the Internet Routing Table: 157
Average ARIN Region AS path length visible: 3.1
Max ARIN Region AS path length visible: 15
Number of ARIN region 32-bit ASNs visible in the Routing Table: 218
Number of ARIN addresses announced to Internet: 131407952
Equivalent to 7 /8s, 213 /16s and 32 /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: 3640
Total RIPE prefixes after maximum aggregation: 2911
RIPE Deaggregation factor: 1.25
Prefixes being announced from the RIPE address blocks: 3793
Unique aggregates announced from the RIPE address blocks: 3176
RIPE Region origin ASes present in the Internet Routing Table: 671
RIPE Prefixes per ASN: 5.65
RIPE Region origin ASes announcing only one prefix: 300
RIPE Region transit ASes present in the Internet Routing Table: 112
Average RIPE Region AS path length visible: 3.7
Max RIPE Region AS path length visible: 13
Number of RIPE region 32-bit ASNs visible in the Routing Table: 159
Number of RIPE addresses announced to Internet: 58657920
Equivalent to 3 /8s, 127 /16s and 12 /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: 1451
Total LACNIC prefixes after maximum aggregation: 538
LACNIC Deaggregation factor: 2.70
Prefixes being announced from the LACNIC address blocks: 1458
Unique aggregates announced from the LACNIC address blocks: 711
LACNIC Region origin ASes present in the Internet Routing Table: 156
LACNIC Prefixes per ASN: 9.35
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: 4.1
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: 4170304
Equivalent to 0 /8s, 63 /16s and 162 /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: 1133
Total AfriNIC prefixes after maximum aggregation: 173
AfriNIC Deaggregation factor: 6.55
Prefixes being announced from the AfriNIC address blocks: 1134
Unique aggregates announced from the AfriNIC address blocks: 220
AfriNIC Region origin ASes present in the Internet Routing Table: 50
AfriNIC Prefixes per ASN: 22.68
AfriNIC Region origin ASes announcing only one prefix: 29
AfriNIC Region transit ASes present in the Internet Routing Table: 10
Average AfriNIC Region AS path length visible: 2.9
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: 2415872
Equivalent to 0 /8s, 36 /16s and 221 /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 635 2202 465 SINET-AS Research Organization of Informa
7497 449 180 24 CSTNET-AS-AP Computer Network Information
1237 193 74 145 KREONET-AS-KR KISTI, KR
58647 182 18 2 KAGAWAU-AS Kagawa University, JP
7575 167 313 114 AARNET-AS-AP Australian Academic and Rese
55824 146 19 20 NKN-CORE-NW NKN Core Network, IN
4538 139 4192 71 ERX-CERNET-BKB China Education and Resear
4762 75 4 1 MAHIDOL-BORDER-AS Mahidol University, Tha
4621 69 37 10 UNINET-AS-AP UNINET-, TH
2697 59 4 34 ERX-ERNET-AS Education and Research Netwo
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
16509 4041 4893 1948 AMAZON-02, US
14618 1004 4444 761 AMAZON-AES, US
2152 475 507 99 CENIC-2152, US
2920 225 44 51 LACOE, US
668 205 646 174 DNIC-AS-00668, US
376 201 162 150 RISQ-AS, CA
5786 198 16 1 UPRENET, PR
18558 140 18 5 NETBLK-RCOEK, US
81 129 519 34 NCREN, US
1 128 2 49 LVLT-1, US
Complete listing at https://bgp.nsrc.org/REN/Internet2/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
786 185 1767 182 JANET Jisc Services Limited, GB
8895 130 24 5 ISU Internet Services Unit ISU, SA
559 114 533 104 SWITCH Peering requests: peering at switch.c
1103 96 1743 83 SURFNET-NL SURFnet, The Netherlands, NL
2614 93 26 73 ROEDUNET, RO
8987 83 227 60 AMAZON EXPANSION, IE
137 82 677 77 ASGARR Consortium GARR, IT
1930 79 88 74 RCCN Fundacao para a Ciencia e a Tecnolog
553 78 462 78 BELWUE BelWue-Koordination, DE
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
1916 218 178 43 Rede Nacional de Ensino e Pesquisa, BR
28391 154 10 68 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
2715 48 99 36 Fundacao Carlos Chagas Filho de Amparo a
19611 48 17 2 Associacao Antonio Vieira - Unisinos, BR
4270 46 16 1 Red de Interconexion Universitaria, AR
3596 40 8 4 Universidad Autonoma Metropolitana, MX
28614 38 2 2 Fundacao Universidade Regional de Blumena
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 538 82 3 KENET-AS, KE
2018 379 319 71 TENET-1, ZA
8094 47 48 18 PUKNET, ZA
37215 32 8 1 MAREN, MW
6879 24 2 9 ENSTINET-, EG
37661 12 8 4 NRaE1-AS, NG
327700 12 16 1 MoRENet, MZ
37501 11 49 6 UOFS, ZA
36982 8 33 8 UCT, ZA
37074 6 8 2 UG-AS, GH
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
16509 4041 4893 1948 AMAZON-02, US
14618 1004 4444 761 AMAZON-AES, US
2907 635 2202 465 SINET-AS Research Organization of Informa
36914 538 82 3 KENET-AS, KE
2152 475 507 99 CENIC-2152, US
7497 449 180 24 CSTNET-AS-AP Computer Network Information
2018 379 319 71 TENET-1, ZA
680 284 1899 249 DFN Verein zur Foerderung eines Deutschen
2920 225 44 51 LACOE, US
1916 218 178 43 Rede Nacional de Ensino e Pesquisa, BR
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 538 535 KENET-AS, KE
7497 449 425 CSTNET-AS-AP Computer Network Information Cente
2152 475 376 CENIC-2152, US
2018 379 308 TENET-1, ZA
14618 1004 243 AMAZON-AES, US
5786 198 197 UPRENET, PR
58647 182 180 KAGAWAU-AS Kagawa University, JP
1916 218 175 Rede Nacional de Ensino e Pesquisa, BR
2920 225 174 LACOE, US
2907 635 170 SINET-AS Research Organization of Information a
Complete listing at https://bgp.nsrc.org/REN/Internet2/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/Internet2/data-badAS
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
64.186.3.0/24 Origin: 16509 AMAZON-02, US
64.186.3.0/24 Transit: 11537 INTERNET2-RESEARCH-EDU, US
103.165.160.0/24 Origin: 16509 AMAZON-02, US
103.165.160.0/24 Transit: 11537 INTERNET2-RESEARCH-EDU, US
164.160.192.0/21 Origin: 37661 NRaE1-AS, NG
164.160.192.0/21 Transit: 37288 WACREN, SN
192.225.212.0/24 Origin: 14618 AMAZON-AES, US
192.225.212.0/24 Transit: 16509 AMAZON-02, US
192.225.223.0/24 Origin: 14618 AMAZON-AES, US
192.225.223.0/24 Transit: 16509 AMAZON-02, US
Complete listing at https://bgp.nsrc.org/REN/Internet2/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 /11:3 /12:18
/13:28 /14:58 /15:173 /16:2070 /17:491 /18:507
/19:649 /20:1010 /21:1128 /22:1753 /23:1929 /24:14791
/25:43 /26:67 /27:99 /28:11 /29:59 /30:0
/31:0 /32:3
Advertised prefixes smaller than registry allocations
-----------------------------------------------------
ASN No of nets Total ann. Description
16509 668 4041 AMAZON-02, US
36914 514 538 KENET-AS, KE
14618 315 1004 AMAZON-AES, US
8895 125 130 ISU Internet Services Unit ISU, SA
1916 60 218 Rede Nacional de Ensino e Pesquisa, BR
2152 59 475 CENIC-2152, US
1 42 128 LVLT-1, US
23024 37 97 OCDE, US
3267 34 78 NIKS, RU
32440 33 58 LONI, US
Complete listing at https://bgp.nsrc.org/REN/Internet2/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
1:3 3:169 4:2 5:20 6:4 8:2
12:2 13:56 14:93 15:103 16:129 18:155
23:48 24:3 31:3 35:40 37:8 38:11
40:5 41:223 42:11 44:4 45:77 46:10
47:1 49:10 50:11 52:830 54:178 58:1
59:19 60:6 61:3 62:8 63:38 64:147
65:25 66:97 67:67 68:27 69:57 70:22
71:16 72:18 74:78 75:1 76:45 77:12
78:3 79:10 80:12 81:25 82:7 83:7
84:11 85:49 86:5 87:2 88:1 89:19
91:52 92:4 93:45 94:2 95:2 96:7
97:1 98:14 99:68 101:1 102:14 103:337
104:134 107:8 108:35 109:7 111:21 113:1
114:19 115:1 116:14 117:66 118:33 119:23
121:28 122:11 123:8 124:42 125:5 128:55
129:40 130:161 131:73 132:65 133:155 134:111
135:2 136:224 137:106 138:62 139:20 140:47
141:13 142:62 143:33 144:41 145:4 146:139
147:75 148:206 149:20 150:73 151:36 152:141
153:14 154:41 155:101 156:134 157:40 158:41
159:168 160:37 161:41 162:74 163:76 164:23
165:77 166:5 167:37 168:173 169:15 170:184
171:1 172:19 173:36 174:2 175:16 176:4
177:6 178:1 179:14 180:16 181:1 182:11
184:9 185:86 186:3 187:22 188:16 189:3
190:34 191:13 192:1600 193:292 194:124 195:76
196:145 197:322 198:602 199:347 200:268 201:37
202:657 203:451 204:431 205:203 206:246 207:343
208:132 209:193 210:220 211:3 212:170 213:19
214:8 216:216 217:14 218:23 219:6 220:16
222:2 223:15
End of report
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