[REN-BGP-stats-all] IPv4 R&E Routing Table Report - PERN (R&E) view
REN Routing Table Report
cscora at bgp.nsrc.org
Tue Feb 4 19:10:40 UTC 2025
IPv4 R&E Routing Table Report 19:10 GMT Tue 04 Feb, 2025
IPv4 BGP Table (R&E) as seen at PERN.
Report Website: https://bgp.nsrc.org/REN
Detailed Analysis: https://bgp.nsrc.org/REN/PERN/
Analysis Summary
----------------
BGP routing table entries examined: 3875
Prefixes after maximum aggregation (per Origin AS): 1853
Deaggregation factor: 2.09
Unique aggregates announced (without unneeded subnets): 2161
Number of IPv4 prefixes with a valid ROA: 1483
Number of IPv4 prefixes with an invalid ROA: 3
Number of IPv4 prefixes with no ROA: 2389
Total ASes present in the Internet Routing Table: 400
Prefixes per ASN: 9.69
Origin-only ASes present in the Internet Routing Table: 265
Origin ASes announcing only one prefix: 89
Transit ASes present in the Internet Routing Table: 135
Transit-only ASes present in the Internet Routing Table: 90
Paths with bogon ASNs present in the IPv4 Routing Table: 0
Average AS path length visible in the Internet Routing Table: 6.1
Max AS path length visible: 16
Max AS path prepend of ASN ( 45768) 8
Prefixes from unregistered ASNs in the Routing Table: 0
Number of instances of unregistered ASNs: 0
Number of 32-bit ASNs allocated by the RIRs: 46096
Number of 32-bit ASNs visible in the Routing Table: 75
Prefixes from 32-bit ASNs in the Routing Table: 156
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: 64239872
Equivalent to 3 /8s, 212 /16s and 57 /24s
Percentage of available address space announced: 1.7
Percentage of allocated address space announced: 1.7
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: 895
APNIC Region Analysis Summary
-----------------------------
Prefixes being announced by APNIC Region ASes: 912
Total APNIC prefixes after maximum aggregation: 210
APNIC Deaggregation factor: 4.34
Prefixes being announced from the APNIC address blocks: 911
Unique aggregates announced from the APNIC address blocks: 215
APNIC Region origin ASes present in the Internet Routing Table: 30
APNIC Prefixes per ASN: 30.37
APNIC Region origin ASes announcing only one prefix: 6
APNIC Region transit ASes present in the Internet Routing Table: 17
Average APNIC Region AS path length visible: 5.0
Max APNIC Region AS path length visible: 11
Number of APNIC region 32-bit ASNs visible in the Routing Table: 4
Number of APNIC addresses announced to Internet: 18232320
Equivalent to 1 /8s, 22 /16s and 52 /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: 1510
Total ARIN prefixes after maximum aggregation: 891
ARIN Deaggregation factor: 1.69
Prefixes being announced from the ARIN address blocks: 1518
Unique aggregates announced from the ARIN address blocks: 1103
ARIN Region origin ASes present in the Internet Routing Table: 193
ARIN Prefixes per ASN: 7.87
ARIN Region origin ASes announcing only one prefix: 48
ARIN Region transit ASes present in the Internet Routing Table: 61
Average ARIN Region AS path length visible: 7.7
Max ARIN Region AS path length visible: 13
Number of ARIN region 32-bit ASNs visible in the Routing Table: 39
Number of ARIN addresses announced to Internet: 28613888
Equivalent to 1 /8s, 180 /16s and 157 /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: 790
Total RIPE prefixes after maximum aggregation: 644
RIPE Deaggregation factor: 1.23
Prefixes being announced from the RIPE address blocks: 782
Unique aggregates announced from the RIPE address blocks: 718
RIPE Region origin ASes present in the Internet Routing Table: 62
RIPE Prefixes per ASN: 12.61
RIPE Region origin ASes announcing only one prefix: 23
RIPE Region transit ASes present in the Internet Routing Table: 30
Average RIPE Region AS path length visible: 4.8
Max RIPE Region AS path length visible: 11
Number of RIPE region 32-bit ASNs visible in the Routing Table: 16
Number of RIPE addresses announced to Internet: 15907840
Equivalent to 0 /8s, 242 /16s and 188 /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: 76
Total LACNIC prefixes after maximum aggregation: 33
LACNIC Deaggregation factor: 2.30
Prefixes being announced from the LACNIC address blocks: 76
Unique aggregates announced from the LACNIC address blocks: 40
LACNIC Region origin ASes present in the Internet Routing Table: 14
LACNIC Prefixes per ASN: 5.43
LACNIC Region origin ASes announcing only one prefix: 7
LACNIC Region transit ASes present in the Internet Routing Table: 6
Average LACNIC Region AS path length visible: 6.9
Max LACNIC Region AS path length visible: 16
Number of LACNIC region 32-bit ASNs visible in the Routing Table: 12
Number of LACNIC addresses announced to Internet: 36608
Equivalent to 0 /8s, 0 /16s and 143 /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: 587
Total AfriNIC prefixes after maximum aggregation: 75
AfriNIC Deaggregation factor: 7.83
Prefixes being announced from the AfriNIC address blocks: 587
Unique aggregates announced from the AfriNIC address blocks: 84
AfriNIC Region origin ASes present in the Internet Routing Table: 11
AfriNIC Prefixes per ASN: 53.36
AfriNIC Region origin ASes announcing only one prefix: 5
AfriNIC Region transit ASes present in the Internet Routing Table: 4
Average AfriNIC Region AS path length visible: 5.4
Max AfriNIC Region AS path length visible: 16
Number of AfriNIC region 32-bit ASNs visible in the Routing Table: 4
Number of AfriNIC addresses announced to Internet: 1448960
Equivalent to 0 /8s, 22 /16s and 28 /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
7497 435 177 19 CSTNET-AS-AP Computer Network Information
4538 118 4144 69 ERX-CERNET-BKB China Education and Resear
55824 107 16 4 NKN-CORE-NW NKN Core Network, IN
38280 50 3 2 MONASHUNI-MY-AS-AP Monash University Sunw
24151 30 2 12 CNNIC-CRITICAL-AP China Internet Network
9270 18 5 6 APAN-KR-AS National Infomation Society Ag
24364 18 176 8 CNGI-SH-IX-AS-AP CERNET2 IX at Shanghai J
7560 17 1 9 CHONBUK-AS Jeonbuk National University, K
18422 16 17 2 ITRINET-AS-TW Industrial Technology Resea
24348 16 98 12 CNGI-BJ-IX2-AS-AP CERNET2 IX at Tsinghua
Complete listing at https://bgp.nsrc.org/REN/PERN/data-ASnet-APNIC
ARIN Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
2152 230 491 94 CENIC-2152, US
237 67 508 38 MERIT-AS-14, US
7939 61 16 10 UNIVCENTFLA, US
22742 58 37 26 CT-EDU-NET, US
6325 54 168 11 ILLINOIS-CENTURY, US
27609 45 5 21 USC-UNIVERSITY-HOSPITAL, US
25977 44 10 15 HCCS, US
611 37 84 24 NECN-1-611, CA
1767 36 42 12 ILIGHT-NET, US
18632 30 5 14 VOLCANO-VISION, US
Complete listing at https://bgp.nsrc.org/REN/PERN/data-ASnet-ARIN
RIPE Region per AS prefix count summary
---------------------------------------
ASN No of nets /20 equiv MaxAgg Description
680 243 1497 216 DFN Verein zur Foerderung eines Deutschen
786 151 1067 136 JANET Jisc Services Limited, GB
2614 88 26 71 ROEDUNET, RO
3218 39 3 24 COSMOS-3218-AS AS-COSMOS root, RU
5408 33 51 17 GR-NET www.grnet.gr, GR
47623 22 1 4 IIAP-ASNET-AS, AM
60187 20 4 5 LGFL-AS, GB
1653 19 137 18 SUNET SUNET Swedish University Network, E
1213 17 450 17 HEANET, IE
8678 13 5 13 ANKARA-NET, TR
Complete listing at https://bgp.nsrc.org/REN/PERN/data-ASnet-RIPE
LACNIC Region per AS prefix count summary
-----------------------------------------
ASN No of nets /20 equiv MaxAgg Description
61468 49 5 16 CEDIA, EC
269224 7 0 1 Universidade La Salle, BR
268334 3 0 2 Fundacao Universidade Alto Vale do Rio do
268744 3 2 3 APESC - Associacao Pro-Ensino em Santa Cr
269825 3 0 1 UNIVERSIDAD DE LAS AMERICAS, EC
268118 2 1 2 UNIVERSIDADE FEDERAL DE SANTA MARIA, BR
268839 2 0 1 Associacao Pro Ensino Superior em Novo Ha
22724 1 0 1 PUNTONET S.A., EC
265884 1 0 1 CONSEJO NACIONAL DE INVESTIGACIONES CIENT
267630 1 0 1 UNIVERSIDADE ESTADUAL DO MARANHAO, BR
Complete listing at https://bgp.nsrc.org/REN/PERN/data-ASnet-LACNIC
AfriNIC Region per AS prefix count summary
------------------------------------------
ASN No of nets /20 equiv MaxAgg Description
36914 325 82 3 KENET-AS, KE
2018 175 219 62 TENET-1, ZA
37182 36 8 1 TERNET, TZ
37215 34 8 1 MAREN, MW
327700 10 16 1 MoRENet, MZ
22354 2 3 2 UNIV-DAR, TZ
37010 1 0 1 National-University-Rwanda, RW
37263 1 1 1 UNIVEDU, GH
37717 1 16 1 EL-Khawarizmi, TN
328076 1 1 1 University-of-Mines-and-Technology, GH
Complete listing at https://bgp.nsrc.org/REN/PERN/data-ASnet-AFRINIC
Global Per AS prefix count summary
----------------------------------
ASN No of nets /20 equiv MaxAgg Description
7497 435 177 19 CSTNET-AS-AP Computer Network Information
36914 325 82 3 KENET-AS, KE
680 243 1497 216 DFN Verein zur Foerderung eines Deutschen
2152 230 491 94 CENIC-2152, US
2018 175 219 62 TENET-1, ZA
786 151 1067 136 JANET Jisc Services Limited, GB
4538 118 4144 69 ERX-CERNET-BKB China Education and Resear
55824 107 16 4 NKN-CORE-NW NKN Core Network, IN
2614 88 26 71 ROEDUNET, RO
237 67 508 38 MERIT-AS-14, US
Complete listing at https://bgp.nsrc.org/REN/PERN/data-ASnet
Global Per AS Maximum Aggregation summary
-----------------------------------------
ASN No of nets Net Savings Description
36914 325 322 KENET-AS, KE
2152 230 136 CENIC-2152, US
2018 175 113 TENET-1, ZA
55824 107 103 NKN-CORE-NW NKN Core Network, IN
7939 61 51 UNIVCENTFLA, US
4538 118 49 ERX-CERNET-BKB China Education and Research Net
38280 50 48 MONASHUNI-MY-AS-AP Monash University Sunway Cam
6325 54 43 ILLINOIS-CENTURY, US
37182 36 35 TERNET, TZ
61468 49 33 CEDIA, EC
Complete listing at https://bgp.nsrc.org/REN/PERN/data-CIDRnet
Advertised Unallocated Addresses
--------------------------------
Unassigned Network ASN Information AS Name
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/PERN/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 /12:8
/13:13 /14:19 /15:58 /16:415 /17:85 /18:86
/19:133 /20:153 /21:165 /22:291 /23:322 /24:2125
/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 304 325 KENET-AS, KE
37182 35 36 TERNET, TZ
25977 30 44 HCCS, US
27609 29 45 USC-UNIVERSITY-HOSPITAL, US
37215 28 34 MAREN, MW
61468 23 49 CEDIA, EC
1968 21 23 UMASSNET-AS1968, US
22742 18 58 CT-EDU-NET, US
47623 18 22 IIAP-ASNET-AS, AM
60187 18 20 LGFL-AS, GB
Complete listing at https://bgp.nsrc.org/REN/PERN/data-sXXas-nos
Number of /24s announced per /8 block (Global)
----------------------------------------------
5:15 6:4 8:2 12:1 14:93 23:8
24:3 31:1 35:1 37:8 38:11 40:1
41:255 42:11 44:4 45:51 46:4 47:1
49:7 50:4 52:1 59:19 60:6 61:3
62:8 63:36 64:45 65:5 66:57 67:40
68:13 69:18 70:2 72:1 74:2 76:2
80:2 81:3 83:3 85:10 89:1 91:1
93:7 94:2 103:6 104:2 107:2 108:4
114:7 116:4 118:32 119:21 124:42 125:5
129:4 130:2 131:3 132:39 134:7 136:1
137:15 138:1 141:3 142:5 143:5 144:3
146:11 149:1 152:10 156:1 159:95 160:2
161:2 162:7 163:9 164:2 168:45 169:1
170:7 173:5 180:1 185:9 187:3 188:2
190:16 192:251 193:111 194:21 195:2 196:16
197:113 198:87 199:42 200:2 201:4 202:36
203:14 204:19 205:8 206:12 207:49 208:6
209:10 210:74 216:4 217:1 218:21 220:4
223:4
End of report
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